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CVE-2020-12419

When processing callbacks that occurred during window flushing in the parent process, the...

8.8 HighFix available

When processing callbacks that occurred during window flushing in the parent process, the associated window may die; causing a use-after-free condition. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

2.32%Up 0.3 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 8.8

When processing callbacks that occurred during window flushing in the parent process, the associated window may die; causing a use-after-free condition. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

Record
CVE-2020-12419
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
9.3 HighAV:N/AC:M/Au:N/C:C/I:C/A:C
Weakness
CWE-416
Updated
2026-11-02
CVE List No score

When processing callbacks that occurred during window flushing in the parent process, the associated window may die; causing a use-after-free condition. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

Record
CVE-2020-12419
Updated
2026-11-02
EUVDEUVD-2020-4731 No score

When processing callbacks that occurred during window flushing in the parent process, the associated window may die; causing a use-after-free condition. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

Record
EUVD-2020-4731
Updated
2026-11-03
GitHub AdvisoriesGHSA-qfjv-j5f5-wv79 8.8

When processing callbacks that occurred during window flushing in the parent process, the...

When processing callbacks that occurred during window flushing in the parent process, the associated window may die; causing a use-after-free condition. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

Record
GHSA-qfjv-j5f5-wv79
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-416
Updated
2026-11-02
OSVALPINE-CVE-2020-12419 8.8

When processing callbacks that occurred during window flushing in the parent process, the associated window may die; causing a use-after-free condition. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

Record
ALPINE-CVE-2020-12419
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-03
OSV 8.8

When processing callbacks that occurred during window flushing in the parent process, the associated window may die; causing a use-after-free condition. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

Record
CVE-2020-12419
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 27 moreShow less
OSVDEBIAN-CVE-2020-12419 8.8

When processing callbacks that occurred during window flushing in the parent process, the associated window may die; causing a use-after-free condition. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

Record
DEBIAN-CVE-2020-12419
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:2824 8.8

Red Hat Security Advisory: firefox security update

Record
RHSA-2020:2824
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:2825 8.8

Red Hat Security Advisory: firefox security update

Record
RHSA-2020:2825
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:2826 8.8

Red Hat Security Advisory: firefox security update

Record
RHSA-2020:2826
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:2827 8.8

Red Hat Security Advisory: firefox security update

Record
RHSA-2020:2827
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:2828 8.8

Red Hat Security Advisory: firefox security update

Record
RHSA-2020:2828
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:2906 8.8

Red Hat Security Advisory: thunderbird security update

Record
RHSA-2020:2906
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:2907 8.8

Red Hat Security Advisory: thunderbird security update

Record
RHSA-2020:2907
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:2966 8.8

Red Hat Security Advisory: thunderbird security update

Record
RHSA-2020:2966
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:3038 8.8

Red Hat Security Advisory: thunderbird security update

Record
RHSA-2020:3038
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:3046 8.8

Red Hat Security Advisory: thunderbird security update

Record
RHSA-2020:3046
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2020-12419 8.8

When processing callbacks that occurred during window flushing in the parent process, the associated window may die; causing a use-after-free condition. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

Record
UBUNTU-CVE-2020-12419
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVMGASA-2020-0274 No score

Updated firefox packages fix security vulnerability

Updated nss and firefox packages fix security vulnerabilities:

NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys (CVE-2020-12399).

Side channel vulnerabilities during RSA key generation in NSS (CVE-2020-12402).

When browsing a malicious page, a race condition in our SharedWorkerService could occur and lead to a potentially exploitable crash due to a use-after-free (CVE-2020-12405).

Mozilla developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash due to type confusion with NativeTypes. We presume that with enough effort that it could be exploited to run arbitrary code (CVE-2020-12406).

Mozilla developers Tom Tung and Karl Tomlinson reported memory safety bugs present in Firefox ESR 68.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code (CVE-2020-12410).

Manipulating individual parts of a URL object could have caused an out-of-bounds read, leaking process memory to malicious JavaScript (CVE-2020-12418).

When processing callbacks that occurred during window flushing in the parent process, the associated window may die; causing a use-after-free in nsGlobalWindowInner. This could have led to memory corruption and a potentially exploitable crash (CVE-2020-12419).

When trying to connect to a STUN server, a race condition could have caused a use-after-free of a pointer, leading to memory corruption and a potentially exploitable crash (CVE-2020-12420).

When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected (even if they were legitimately added by an administrator.) This could have caused add-ons to become out-of-date silently without notification to the user (CVE-2020-12421).

Record
MGASA-2020-0274
Updated
2026-11-02
OSVMGASA-2020-0300 No score

Updated thunderbird packages fix security vulnerability

If Thunderbird is configured to use STARTTLS for an IMAP server, and the server sends a PREAUTH response, then Thunderbird will continue with an unencrypted connection, causing email data to be sent without protection (CVE-2020-12398).

When browsing a malicious page, a race condition in our SharedWorkerService could occur and lead to a potentially exploitable crash due to a use-after-free (CVE-2020-12405).

Mozilla developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash due to type confusion with NativeTypes. We presume that with enough effort that it could be exploited to run arbitrary code (CVE-2020-12406).

Mozilla developers Tom Tung and Karl Tomlinson reported memory safety bugs present in Firefox ESR 68.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code (CVE-2020-12410).

Manipulating individual parts of a URL object could have caused an out-of-bounds read, leaking process memory to malicious JavaScript (CVE-2020-12418).

When processing callbacks that occurred during window flushing in the parent process, the associated window may die; causing a use-after-free in nsGlobalWindowInner. This could have led to memory corruption and a potentially exploitable crash (CVE-2020-12419).

When trying to connect to a STUN server, a race condition could have caused a use-after-free of a pointer, leading to memory corruption and a potentially exploitable crash (CVE-2020-12420).

If an attacker intercepts Thunderbird's initial attempt to perform automatic account setup using the Microsoft Exchange autodiscovery mechanism, and the attacker sends a crafted response, then Thunderbird sends username and password over https to a server controlled by the attacker (MFSA-2020-0001).

When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected (even if they were legitimately added by an administrator.) This could have caused add-ons to become out-of-date silently without notification to the user (CVE-2020-12421).

Record
MGASA-2020-0300
Updated
2026-11-02
OSVopenSUSE-SU-2020:0967-1 No score

Security update for MozillaThunderbird

This update for MozillaThunderbird to version 68.10.0 ESR fixes the following issues:

  • CVE-2020-12417: Memory corruption due to missing sign-extension for ValueTags on ARM64 (bsc#1173576).
  • CVE-2020-12418: Information disclosure due to manipulated URL object (bsc#1173576).
  • CVE-2020-12419: Use-after-free in nsGlobalWindowInner (bsc#1173576).
  • CVE-2020-12420: Use-After-Free when trying to connect to a STUN server (bsc#1173576).
  • CVE-2020-12421: Add-On updates did not respect the same certificate trust rules as software updates (bsc#1173576).

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2020:0967-1
Updated
2026-11-02
OSVopenSUSE-SU-2020:0982-1 No score

Security update for MozillaThunderbird

This update for MozillaThunderbird to version 68.10.0 ESR fixes the following issues:

  • CVE-2020-12417: Memory corruption due to missing sign-extension for ValueTags on ARM64 (bsc#1173576).
  • CVE-2020-12418: Information disclosure due to manipulated URL object (bsc#1173576).
  • CVE-2020-12419: Use-after-free in nsGlobalWindowInner (bsc#1173576).
  • CVE-2020-12420: Use-After-Free when trying to connect to a STUN server (bsc#1173576).
  • CVE-2020-12421: Add-On updates did not respect the same certificate trust rules as software updates (bsc#1173576).

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2020:0982-1
Updated
2026-11-02
OSVopenSUSE-SU-2020:0983-1 No score

Security update for MozillaFirefox

This update for MozillaFirefox to version 78.0.1 ESR fixes the following issues:

Security issues fixed:

  • CVE-2020-12415: AppCache manifest poisoning due to url encoded character processing (bsc#1173576).
  • CVE-2020-12416: Use-after-free in WebRTC VideoBroadcaster (bsc#1173576).
  • CVE-2020-12417: Memory corruption due to missing sign-extension for ValueTags on ARM64 (bsc#1173576).
  • CVE-2020-12418: Information disclosure due to manipulated URL object (bsc#1173576).
  • CVE-2020-12419: Use-after-free in nsGlobalWindowInner (bsc#1173576).
  • CVE-2020-12420: Use-After-Free when trying to connect to a STUN server (bsc#1173576).
  • CVE-2020-12402: RSA Key Generation vulnerable to side-channel attack (bsc#1173576).
  • CVE-2020-12421: Add-On updates did not respect the same certificate trust rules as software updates (bsc#1173576).
  • CVE-2020-12422: Integer overflow in nsJPEGEncoder::emptyOutputBuffer (bsc#1173576).
  • CVE-2020-12423: DLL Hijacking due to searching %PATH% for a library (bsc#1173576).
  • CVE-2020-12424: WebRTC permission prompt could have been bypassed by a compromised content process (bsc#1173576).
  • CVE-2020-12425: Out of bound read in Date.parse() (bsc#1173576).
  • CVE-2020-12426: Memory safety bugs fixed in Firefox 78 (bsc#1173576).
  • FIPS: MozillaFirefox: allow /proc/sys/crypto/fips_enabled (bsc#1167231).

Non-security issues fixed:

  • Fixed interaction with freetype6 (bsc#1173613).

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2020:0983-1
Updated
2026-11-02
OSVopenSUSE-SU-2020:1017-1 No score

Security update for MozillaFirefox

This update for MozillaFirefox to version 78.0.1 ESR fixes the following issues:

Security issues fixed:

  • CVE-2020-12415: AppCache manifest poisoning due to url encoded character processing (bsc#1173576).
  • CVE-2020-12416: Use-after-free in WebRTC VideoBroadcaster (bsc#1173576).
  • CVE-2020-12417: Memory corruption due to missing sign-extension for ValueTags on ARM64 (bsc#1173576).
  • CVE-2020-12418: Information disclosure due to manipulated URL object (bsc#1173576).
  • CVE-2020-12419: Use-after-free in nsGlobalWindowInner (bsc#1173576).
  • CVE-2020-12420: Use-After-Free when trying to connect to a STUN server (bsc#1173576).
  • CVE-2020-12402: RSA Key Generation vulnerable to side-channel attack (bsc#1173576).
  • CVE-2020-12421: Add-On updates did not respect the same certificate trust rules as software updates (bsc#1173576).
  • CVE-2020-12422: Integer overflow in nsJPEGEncoder::emptyOutputBuffer (bsc#1173576).
  • CVE-2020-12423: DLL Hijacking due to searching %PATH% for a library (bsc#1173576).
  • CVE-2020-12424: WebRTC permission prompt could have been bypassed by a compromised content process (bsc#1173576).
  • CVE-2020-12425: Out of bound read in Date.parse() (bsc#1173576).
  • CVE-2020-12426: Memory safety bugs fixed in Firefox 78 (bsc#1173576).
  • FIPS: MozillaFirefox: allow /proc/sys/crypto/fips_enabled (bsc#1167231).

Non-security issues fixed:

  • Fixed interaction with freetype6 (bsc#1173613).

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2020:1017-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10600-1 No score

MozillaFirefox-92.0-1.2 on GA media

These are all security issues fixed in the MozillaFirefox-92.0-1.2 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10600-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10601-1 No score

MozillaThunderbird-91.1.1-1.1 on GA media

These are all security issues fixed in the MozillaThunderbird-91.1.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10601-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:14572-1 No score

firefox-esr-128.5.1-1.1 on GA media

These are all security issues fixed in the firefox-esr-128.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:14572-1
Updated
2026-11-02
OSVSUSE-SU-2020:14421-1 No score

Security update for MozillaFirefox

This update for MozillaFirefox to version 78.0.1 ESR fixes the following issues:

Security issues fixed:

  • CVE-2020-12415: AppCache manifest poisoning due to url encoded character processing (bsc#1173576).
  • CVE-2020-12416: Use-after-free in WebRTC VideoBroadcaster (bsc#1173576).
  • CVE-2020-12417: Memory corruption due to missing sign-extension for ValueTags on ARM64 (bsc#1173576).
  • CVE-2020-12418: Information disclosure due to manipulated URL object (bsc#1173576).
  • CVE-2020-12419: Use-after-free in nsGlobalWindowInner (bsc#1173576).
  • CVE-2020-12420: Use-After-Free when trying to connect to a STUN server (bsc#1173576).
  • CVE-2020-12402: RSA Key Generation vulnerable to side-channel attack (bsc#1173576).
  • CVE-2020-12421: Add-On updates did not respect the same certificate trust rules as software updates (bsc#1173576).
  • CVE-2020-12422: Integer overflow in nsJPEGEncoder::emptyOutputBuffer (bsc#1173576).
  • CVE-2020-12423: DLL Hijacking due to searching %PATH% for a library (bsc#1173576).
  • CVE-2020-12424: WebRTC permission prompt could have been bypassed by a compromised content process (bsc#1173576).
  • CVE-2020-12425: Out of bound read in Date.parse() (bsc#1173576).
  • CVE-2020-12426: Memory safety bugs fixed in Firefox 78 (bsc#1173576).
  • FIPS: MozillaFirefox: allow /proc/sys/crypto/fips_enabled (bsc#1167231).

Non-security issues fixed:

  • Fixed interaction with freetype6 (bsc#1173613).
Record
SUSE-SU-2020:14421-1
Updated
2026-11-02
OSVSUSE-SU-2020:1898-1 No score

Security update for MozillaFirefox

This update for MozillaFirefox to version 78.0.1 ESR fixes the following issues:

Security issues fixed:

  • CVE-2020-12415: AppCache manifest poisoning due to url encoded character processing (bsc#1173576).
  • CVE-2020-12416: Use-after-free in WebRTC VideoBroadcaster (bsc#1173576).
  • CVE-2020-12417: Memory corruption due to missing sign-extension for ValueTags on ARM64 (bsc#1173576).
  • CVE-2020-12418: Information disclosure due to manipulated URL object (bsc#1173576).
  • CVE-2020-12419: Use-after-free in nsGlobalWindowInner (bsc#1173576).
  • CVE-2020-12420: Use-After-Free when trying to connect to a STUN server (bsc#1173576).
  • CVE-2020-12402: RSA Key Generation vulnerable to side-channel attack (bsc#1173576).
  • CVE-2020-12421: Add-On updates did not respect the same certificate trust rules as software updates (bsc#1173576).
  • CVE-2020-12422: Integer overflow in nsJPEGEncoder::emptyOutputBuffer (bsc#1173576).
  • CVE-2020-12423: DLL Hijacking due to searching %PATH% for a library (bsc#1173576).
  • CVE-2020-12424: WebRTC permission prompt could have been bypassed by a compromised content process (bsc#1173576).
  • CVE-2020-12425: Out of bound read in Date.parse() (bsc#1173576).
  • CVE-2020-12426: Memory safety bugs fixed in Firefox 78 (bsc#1173576).
  • FIPS: MozillaFirefox: allow /proc/sys/crypto/fips_enabled (bsc#1167231).

Non-security issues fixed:

  • Fixed interaction with freetype6 (bsc#1173613).
Record
SUSE-SU-2020:1898-1
Updated
2026-11-02
OSVSUSE-SU-2020:1899-1 No score

Security update for MozillaFirefox

This update for MozillaFirefox to version 78.0.1 ESR fixes the following issues:

Security issues fixed:

  • CVE-2020-12415: AppCache manifest poisoning due to url encoded character processing (bsc#1173576).
  • CVE-2020-12416: Use-after-free in WebRTC VideoBroadcaster (bsc#1173576).
  • CVE-2020-12417: Memory corruption due to missing sign-extension for ValueTags on ARM64 (bsc#1173576).
  • CVE-2020-12418: Information disclosure due to manipulated URL object (bsc#1173576).
  • CVE-2020-12419: Use-after-free in nsGlobalWindowInner (bsc#1173576).
  • CVE-2020-12420: Use-After-Free when trying to connect to a STUN server (bsc#1173576).
  • CVE-2020-12402: RSA Key Generation vulnerable to side-channel attack (bsc#1173576).
  • CVE-2020-12421: Add-On updates did not respect the same certificate trust rules as software updates (bsc#1173576).
  • CVE-2020-12422: Integer overflow in nsJPEGEncoder::emptyOutputBuffer (bsc#1173576).
  • CVE-2020-12423: DLL Hijacking due to searching %PATH% for a library (bsc#1173576).
  • CVE-2020-12424: WebRTC permission prompt could have been bypassed by a compromised content process (bsc#1173576).
  • CVE-2020-12425: Out of bound read in Date.parse() (bsc#1173576).
  • CVE-2020-12426: Memory safety bugs fixed in Firefox 78 (bsc#1173576).
  • FIPS: MozillaFirefox: allow /proc/sys/crypto/fips_enabled (bsc#1167231).

Non-security issues fixed:

  • Fixed interaction with freetype6 (bsc#1173613).
Record
SUSE-SU-2020:1899-1
Updated
2026-11-02
OSVSUSE-SU-2020:1900-1 No score

Security update for MozillaThunderbird

This update for MozillaThunderbird to version 68.10.0 ESR fixes the following issues:

  • CVE-2020-12417: Memory corruption due to missing sign-extension for ValueTags on ARM64 (bsc#1173576).
  • CVE-2020-12418: Information disclosure due to manipulated URL object (bsc#1173576).
  • CVE-2020-12419: Use-after-free in nsGlobalWindowInner (bsc#1173576).
  • CVE-2020-12420: Use-After-Free when trying to connect to a STUN server (bsc#1173576).
  • CVE-2020-12421: Add-On updates did not respect the same certificate trust rules as software updates (bsc#1173576).
Record
SUSE-SU-2020:1900-1
Updated
2026-11-02
OSVUSN-4408-1 No score

firefox vulnerabilities

Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, bypass permission prompts, or execute arbitrary code. (CVE-2020-12415, CVE-2020-12416, CVE-2020-12417, CVE-2020-12418, CVE-2020-12419, CVE-2020-12420, CVE-2020-12422, CVE-2020-12424, CVE-2020-12425, CVE-2020-12426)

It was discovered that when performing add-on updates, certificate chains not terminating with built-in roots were silently rejected. This could result in add-ons becoming outdated. (CVE-2020-12421)

Record
USN-4408-1
Updated
2026-11-02
OSVUSN-4421-1 No score

thunderbird vulnerabilities

Multiple security issues were discovered in Thunderbird. If a user were tricked in to opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, or execute arbtirary code. (CVE-2020-12405, CVE-2020-12406, CVE-2020-12410, CVE-2020-12417, CVE-2020-12418, CVE-2020-12419, CVE-2020-12420)

It was discovered that Thunderbird would continue an unencrypted connection when configured to use STARTTLS for IMAP if the server responded with PREAUTH. A remote attacker could potentially exploit this to perform a person-in-the-middle attack in order to obtain sensitive information. (CVE-2020-12398)

It was discovered that NSS showed timing differences when performing DSA signatures. An attacker could potentially exploit this to obtain private keys using a timing attack. (CVE-2020-12399)

It was discovered that when performing add-on updates, certificate chains not terminating with built-in roots were silently rejected. This could result in add-ons becoming outdated. (CVE-2020-12421)

Record
USN-4421-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
firefox
Alpine:v3.12
 before 78.0-r0
78.0-r0
firefox
Alpine:v3.13
 before 78.0-r0
78.0-r0
firefox
Alpine:v3.14
 before 78.0-r0
78.0-r0
firefox
Alpine:v3.15
 before 78.0-r0
78.0-r0
firefox
Alpine:v3.16
 before 78.0-r0
78.0-r0
firefox
Alpine:v3.17
 before 78.0-r0
78.0-r0
firefox
Alpine:v3.18
 before 78.0-r0
78.0-r0
firefox
Alpine:v3.19
 before 78.0-r0
78.0-r0
firefox
Alpine:v3.20
 before 78.0-r0
78.0-r0
firefox
Alpine:v3.21
 before 78.0-r0
78.0-r0
Show 149 moreShow less
Affected packages
PackageAffectedFixed
firefox
Alpine:v3.22
 before 78.0-r0
78.0-r0
firefox
Alpine:v3.23
 before 78.0-r0
78.0-r0
firefox-esr
Alpine:v3.11
 before 68.10.0-r0
68.10.0-r0
firefox-esr
Alpine:v3.12
 before 68.10.0-r0
68.10.0-r0
firefox-esr
Alpine:v3.13
 before 68.10.0-r0
68.10.0-r0
firefox-esr
Alpine:v3.14
 before 68.10.0-r0
68.10.0-r0
firefox-esr
Alpine:v3.15
 before 68.10.0-r0
68.10.0-r0
firefox-esr
Alpine:v3.16
 before 68.10.0-r0
68.10.0-r0
firefox-esr
Alpine:v3.17
 before 68.10.0-r0
68.10.0-r0
firefox-esr
Alpine:v3.18
 before 68.10.0-r0
68.10.0-r0
firefox-esr
Alpine:v3.19
 before 68.10.0-r0
68.10.0-r0
firefox-esr
Alpine:v3.20
 before 68.10.0-r0
68.10.0-r0
firefox-esr
Alpine:v3.21
 before 68.10.0-r0
68.10.0-r0
firefox-esr
Alpine:v3.22
 before 68.10.0-r0
68.10.0-r0
firefox-esr
Alpine:v3.23
 before 68.10.0-r0
68.10.0-r0
librewolf
Alpine:v3.21
 before 78.0-r0
78.0-r0
librewolf
Alpine:v3.22
 before 78.0-r0
78.0-r0
librewolf
Alpine:v3.23
 before 78.0-r0
78.0-r0
librewolf
Alpine:v3.24
 before 78.0-r0
78.0-r0
mozjs68
Alpine:v3.12
 before 68.10.0-r0
68.10.0-r0
thunderbird
Alpine:v3.16
 before 68.10.0-r0
68.10.0-r0
thunderbird
Alpine:v3.17
 before 68.10.0-r0
68.10.0-r0
thunderbird
Alpine:v3.18
 before 68.10.0-r0
68.10.0-r0
thunderbird
Alpine:v3.19
 before 68.10.0-r0
68.10.0-r0
thunderbird
Alpine:v3.20
 before 68.10.0-r0
68.10.0-r0
thunderbird
Alpine:v3.21
 before 68.10.0-r0
68.10.0-r0
thunderbird
Alpine:v3.22
 before 68.10.0-r0
68.10.0-r0
thunderbird
Alpine:v3.23
 before 68.10.0-r0
68.10.0-r0
firefox-esr
Debian:12
 before 68.10.0esr-1
68.10.0esr-1
firefox-esr
Debian:13
 before 68.10.0esr-1
68.10.0esr-1
firefox-esr
Debian:14
 before 68.10.0esr-1
68.10.0esr-1
thunderbird
Debian:12
 before 1:68.10.0-1
1:68.10.0-1
thunderbird
Debian:13
 before 1:68.10.0-1
1:68.10.0-1
thunderbird
Debian:14
 before 1:68.10.0-1
1:68.10.0-1
firefox-esr
Debian:9
 before 68.10.0esr-1~deb9u1, plus listed versions
45.9.0esr-152.0.1esr-152.0.2esr-152.0esr-152.1.0esr-1
Show 45 moreShow less
52.2.0esr-152.2.0esr-1~deb7u152.2.0esr-1~deb8u152.2.0esr-1~deb9u152.2.0esr-252.3.0esr-152.3.0esr-1~deb7u152.3.0esr-1~deb8u152.3.0esr-1~deb8u252.3.0esr-1~deb9u152.3.0esr-252.4.0esr-1~deb8u152.4.0esr-1~deb9u152.4.0esr-252.4.0esr-2~deb7u152.5.0esr-152.5.0esr-1~deb7u152.5.0esr-1~deb8u152.5.0esr-1~deb9u152.5.2esr-152.5.2esr-1~deb7u152.5.2esr-1~deb8u152.5.2esr-1~deb9u152.5.3esr-152.6.0esr-152.6.0esr-1~deb7u152.6.0esr-1~deb8u152.6.0esr-1~deb9u152.6.0esr-252.6.0esr-2+alpha.152.6.0esr-2+alpha.252.7.0esr-152.7.0esr-1~deb8u152.7.0esr-1~deb9u152.7.1esr-152.7.1esr-1~deb7u152.7.1esr-1~deb8u152.7.1esr-1~deb9u152.7.2esr-152.7.2esr-1~deb7u152.7.2esr-1~deb8u152.7.2esr-1~deb9u152.7.3esr-152.7.3esr-1~deb7u152.7.3esr-1~deb8u1
68.10.0esr-1~deb9u1
firefox-esr
Debian:10
 before 68.10.0esr-1~deb10u1, plus listed versions
60.7.2esr-160.8.0esr-160.8.0esr-1~deb10u160.8.0esr-1~deb8u160.8.0esr-1~deb9u1
Show 45 moreShow less
60.9.0esr-1~deb10u160.9.0esr-1~deb8u160.9.0esr-1~deb8u260.9.0esr-1~deb9u168.0.2esr-168.1.0esr-168.10.0esr-1~deb9u168.2.0esr-168.2.0esr-1~deb10u168.2.0esr-1~deb8u168.2.0esr-1~deb9u168.2.0esr-1~deb9u268.3.0esr-168.3.0esr-1~deb10u168.3.0esr-1~deb8u168.3.0esr-1~deb9u168.4.0esr-168.4.0esr-1~deb10u168.4.0esr-1~deb8u168.4.0esr-1~deb9u168.4.1esr-168.4.1esr-1~deb10u168.4.1esr-1~deb8u168.4.1esr-1~deb9u168.4.2esr-168.5.0esr-168.5.0esr-1~deb10u168.5.0esr-1~deb8u168.5.0esr-1~deb9u168.6.0esr-168.6.0esr-1~deb10u168.6.0esr-1~deb8u168.6.0esr-1~deb9u168.6.1esr-168.6.1esr-1~deb10u168.6.1esr-1~deb9u168.7.0esr-168.7.0esr-1~deb10u168.7.0esr-1~deb8u168.7.0esr-1~deb9u168.8.0esr-168.8.0esr-1~deb10u168.8.0esr-1~deb8u168.8.0esr-1~deb9u168.9.0esr-1
68.10.0esr-1~deb10u1
thunderbird
Debian:9
 before 1:68.10.0-1~deb9u1, plus listed versions
1.5-41.5.0.2-11.5.0.2-21.5.0.2-31.5.0.4-1
Show 45 moreShow less
1.5.0.4-21.5.0.4-31.5.0.5-11.5.0.7-11.5.0.7-21:52.4.0-11:52.4.0-1~deb7u11:52.4.0-1~deb8u11:52.4.0-1~deb9u11:52.4.0-2~exp11:52.5.0-11:52.5.0-1~deb7u11:52.5.0-1~deb8u11:52.5.0-1~deb9u11:52.5.2-11:52.5.2-1~deb7u11:52.5.2-21:52.5.2-2~deb8u11:52.5.2-2~deb9u11:52.6.0-11:52.6.0-1+alpha.11:52.6.0-1+alpha.21:52.6.0-1~deb7u11:52.6.0-1~deb8u11:52.6.0-1~deb9u11:52.7.0-11:52.7.0-1~deb7u11:52.7.0-1~deb8u11:52.7.0-1~deb9u11:52.8.0-11:52.8.0-1~deb7u11:52.8.0-1~deb8u11:52.8.0-1~deb9u11:52.9.0-11:52.9.1-11:52.9.1-1~deb8u11:52.9.1-1~deb9u11:58.0~b3-11:60.0-11:60.0-21:60.0-2~deb9u11:60.0-31:60.0-3~deb9u11:60.0~b10-11:60.0~b2-1
1:68.10.0-1~deb9u1
thunderbird
Debian:10
 before 1:68.10.0-1~deb10u1, plus listed versions
1:60.7.2-11:60.8.0-11:60.8.0-1~deb10u11:60.8.0-1~deb8u11:60.8.0-1~deb9u1
Show 45 moreShow less
1:60.8.0-21:60.9.0-11:60.9.0-1~deb10u11:60.9.0-1~deb8u11:60.9.0-1~deb9u11:65.0~b1-11:66.0~b1-11:67.0~b3-11:68.0~b1-11:68.1.1-1~exp11:68.1.2-1~exp11:68.10.0-1~deb9u11:68.2.1-11:68.2.2-11:68.2.2-1~deb10u11:68.2.2-1~deb8u11:68.2.2-1~deb9u11:68.3.0-11:68.3.0-21:68.3.0-2~deb10u11:68.3.0-2~deb8u11:68.3.0-2~deb9u11:68.3.1-11:68.4.1-11:68.4.1-1~deb10u11:68.4.1-1~deb8u11:68.4.1-1~deb9u11:68.4.2-11:68.5.0-11:68.5.0-1~deb10u11:68.5.0-1~deb8u11:68.5.0-1~deb9u11:68.6.0-11:68.6.0-1~deb10u11:68.6.0-1~deb8u11:68.6.0-1~deb9u11:68.7.0-11:68.7.0-1~deb10u11:68.7.0-1~deb8u11:68.7.0-1~deb9u11:68.8.0-11:68.8.0-1~deb10u11:68.8.0-1~deb8u11:68.8.0-1~deb9u11:68.8.1-1
1:68.10.0-1~deb10u1
nspr
Mageia:7
 before 4.26-1.mga7
4.26-1.mga7
rootcerts
Mageia:7
 before 20200612.00-1.mga7
20200612.00-1.mga7
nss
Mageia:7
 before 3.52.1-1.1.mga7
3.52.1-1.1.mga7
firefox
Mageia:7
 before 68.10.0-1.mga7
68.10.0-1.mga7
firefox-l10n
Mageia:7
 before 68.10.0-1.mga7
68.10.0-1.mga7
thunderbird
Mageia:7
 before 68.10.0-1.mga7
68.10.0-1.mga7
thunderbird-l10n
Mageia:7
 before 68.10.0-1.mga7
68.10.0-1.mga7
firefox
Red Hat:enterprise_linux:6::client
 before 0:68.10.0-1.el6_10
0:68.10.0-1.el6_10
firefox-debuginfo
Red Hat:enterprise_linux:6::client
 before 0:68.10.0-1.el6_10
0:68.10.0-1.el6_10
firefox
Red Hat:enterprise_linux:6::computenode
 before 0:68.10.0-1.el6_10
0:68.10.0-1.el6_10
firefox-debuginfo
Red Hat:enterprise_linux:6::computenode
 before 0:68.10.0-1.el6_10
0:68.10.0-1.el6_10
firefox
Red Hat:enterprise_linux:6::server
 before 0:68.10.0-1.el6_10
0:68.10.0-1.el6_10
firefox-debuginfo
Red Hat:enterprise_linux:6::server
 before 0:68.10.0-1.el6_10
0:68.10.0-1.el6_10
firefox
Red Hat:enterprise_linux:6::workstation
 before 0:68.10.0-1.el6_10
0:68.10.0-1.el6_10
firefox-debuginfo
Red Hat:enterprise_linux:6::workstation
 before 0:68.10.0-1.el6_10
0:68.10.0-1.el6_10
firefox
Red Hat:rhel_e4s:8.0::appstream
 before 0:68.10.0-1.el8_0
0:68.10.0-1.el8_0
firefox-debuginfo
Red Hat:rhel_e4s:8.0::appstream
 before 0:68.10.0-1.el8_0
0:68.10.0-1.el8_0
firefox-debugsource
Red Hat:rhel_e4s:8.0::appstream
 before 0:68.10.0-1.el8_0
0:68.10.0-1.el8_0
firefox
Red Hat:rhel_eus:8.1::appstream
 before 0:68.10.0-1.el8_1
0:68.10.0-1.el8_1
firefox-debuginfo
Red Hat:rhel_eus:8.1::appstream
 before 0:68.10.0-1.el8_1
0:68.10.0-1.el8_1
firefox-debugsource
Red Hat:rhel_eus:8.1::appstream
 before 0:68.10.0-1.el8_1
0:68.10.0-1.el8_1
firefox
Red Hat:enterprise_linux:7::client
 before 0:68.10.0-1.el7_8
0:68.10.0-1.el7_8
firefox-debuginfo
Red Hat:enterprise_linux:7::client
 before 0:68.10.0-1.el7_8
0:68.10.0-1.el7_8
firefox
Red Hat:enterprise_linux:7::server
 before 0:68.10.0-1.el7_8
0:68.10.0-1.el7_8
firefox-debuginfo
Red Hat:enterprise_linux:7::server
 before 0:68.10.0-1.el7_8
0:68.10.0-1.el7_8
firefox
Red Hat:enterprise_linux:7::workstation
 before 0:68.10.0-1.el7_8
0:68.10.0-1.el7_8
firefox-debuginfo
Red Hat:enterprise_linux:7::workstation
 before 0:68.10.0-1.el7_8
0:68.10.0-1.el7_8
firefox
Red Hat:enterprise_linux:8::appstream
 before 0:68.10.0-1.el8_2
0:68.10.0-1.el8_2
firefox-debuginfo
Red Hat:enterprise_linux:8::appstream
 before 0:68.10.0-1.el8_2
0:68.10.0-1.el8_2
firefox-debugsource
Red Hat:enterprise_linux:8::appstream
 before 0:68.10.0-1.el8_2
0:68.10.0-1.el8_2
thunderbird
Red Hat:enterprise_linux:7::client
 before 0:68.10.0-1.el7_8
0:68.10.0-1.el7_8
thunderbird-debuginfo
Red Hat:enterprise_linux:7::client
 before 0:68.10.0-1.el7_8
0:68.10.0-1.el7_8
thunderbird
Red Hat:enterprise_linux:7::server
 before 0:68.10.0-1.el7_8
0:68.10.0-1.el7_8
thunderbird-debuginfo
Red Hat:enterprise_linux:7::server
 before 0:68.10.0-1.el7_8
0:68.10.0-1.el7_8
thunderbird
Red Hat:enterprise_linux:7::workstation
 before 0:68.10.0-1.el7_8
0:68.10.0-1.el7_8
thunderbird-debuginfo
Red Hat:enterprise_linux:7::workstation
 before 0:68.10.0-1.el7_8
0:68.10.0-1.el7_8
thunderbird
Red Hat:rhel_eus:8.1::appstream
 before 0:68.10.0-1.el8_1
0:68.10.0-1.el8_1
thunderbird-debuginfo
Red Hat:rhel_eus:8.1::appstream
 before 0:68.10.0-1.el8_1
0:68.10.0-1.el8_1
thunderbird-debugsource
Red Hat:rhel_eus:8.1::appstream
 before 0:68.10.0-1.el8_1
0:68.10.0-1.el8_1
thunderbird
Red Hat:enterprise_linux:6::client
 before 0:68.10.0-1.el6_10
0:68.10.0-1.el6_10
thunderbird-debuginfo
Red Hat:enterprise_linux:6::client
 before 0:68.10.0-1.el6_10
0:68.10.0-1.el6_10
thunderbird
Red Hat:enterprise_linux:6::server
 before 0:68.10.0-1.el6_10
0:68.10.0-1.el6_10
thunderbird-debuginfo
Red Hat:enterprise_linux:6::server
 before 0:68.10.0-1.el6_10
0:68.10.0-1.el6_10
thunderbird
Red Hat:enterprise_linux:6::workstation
 before 0:68.10.0-1.el6_10
0:68.10.0-1.el6_10
thunderbird-debuginfo
Red Hat:enterprise_linux:6::workstation
 before 0:68.10.0-1.el6_10
0:68.10.0-1.el6_10
thunderbird
Red Hat:enterprise_linux:8::appstream
 before 0:68.10.0-1.el8_2
0:68.10.0-1.el8_2
thunderbird-debuginfo
Red Hat:enterprise_linux:8::appstream
 before 0:68.10.0-1.el8_2
0:68.10.0-1.el8_2
thunderbird-debugsource
Red Hat:enterprise_linux:8::appstream
 before 0:68.10.0-1.el8_2
0:68.10.0-1.el8_2
thunderbird
Red Hat:rhel_e4s:8.0::appstream
 before 0:68.10.0-1.el8_0
0:68.10.0-1.el8_0
thunderbird-debuginfo
Red Hat:rhel_e4s:8.0::appstream
 before 0:68.10.0-1.el8_0
0:68.10.0-1.el8_0
thunderbird-debugsource
Red Hat:rhel_e4s:8.0::appstream
 before 0:68.10.0-1.el8_0
0:68.10.0-1.el8_0
MozillaFirefox
SUSE:Linux Enterprise Server 11 SP4-LTSS
 before 78.0.1-78.80.2
78.0.1-78.80.2
MozillaFirefox-branding-SLED
SUSE:Linux Enterprise Server 11 SP4-LTSS
 before 78-21.12.1
78-21.12.1
MozillaFirefox
SUSE:Linux Enterprise Module for Desktop Applications 15 SP1
 before 78.0.1-3.94.2
78.0.1-3.94.2
MozillaFirefox-branding-SLE
SUSE:Linux Enterprise Module for Desktop Applications 15 SP1
 before 78-4.14.1
78-4.14.1
MozillaFirefox
SUSE:Linux Enterprise Module for Desktop Applications 15 SP2
 before 78.0.1-3.94.2
78.0.1-3.94.2
MozillaFirefox-branding-SLE
SUSE:Linux Enterprise Module for Desktop Applications 15 SP2
 before 78-4.14.1
78-4.14.1
MozillaFirefox
SUSE:HPE Helion OpenStack 8
 before 78.0.1-112.3.1
78.0.1-112.3.1
MozillaFirefox-branding-SLE
SUSE:HPE Helion OpenStack 8
 before 78-35.3.1
78-35.3.1
MozillaFirefox
SUSE:OpenStack Cloud 7
 before 78.0.1-112.3.1
78.0.1-112.3.1
MozillaFirefox-branding-SLE
SUSE:OpenStack Cloud 7
 before 78-35.3.1
78-35.3.1
MozillaFirefox
SUSE:OpenStack Cloud 8
 before 78.0.1-112.3.1
78.0.1-112.3.1
MozillaFirefox-branding-SLE
SUSE:OpenStack Cloud 8
 before 78-35.3.1
78-35.3.1
MozillaFirefox
SUSE:OpenStack Cloud 9
 before 78.0.1-112.3.1
78.0.1-112.3.1
MozillaFirefox-branding-SLE
SUSE:OpenStack Cloud 9
 before 78-35.3.1
78-35.3.1
MozillaFirefox
SUSE:OpenStack Cloud Crowbar 8
 before 78.0.1-112.3.1
78.0.1-112.3.1
MozillaFirefox-branding-SLE
SUSE:OpenStack Cloud Crowbar 8
 before 78-35.3.1
78-35.3.1
MozillaFirefox
SUSE:OpenStack Cloud Crowbar 9
 before 78.0.1-112.3.1
78.0.1-112.3.1
MozillaFirefox-branding-SLE
SUSE:OpenStack Cloud Crowbar 9
 before 78-35.3.1
78-35.3.1
MozillaFirefox
SUSE:Linux Enterprise Server for SAP Applications 12 SP2
 before 78.0.1-112.3.1
78.0.1-112.3.1
MozillaFirefox-branding-SLE
SUSE:Linux Enterprise Server for SAP Applications 12 SP2
 before 78-35.3.1
78-35.3.1
MozillaFirefox
SUSE:Linux Enterprise Server for SAP Applications 12 SP3
 before 78.0.1-112.3.1
78.0.1-112.3.1
MozillaFirefox-branding-SLE
SUSE:Linux Enterprise Server for SAP Applications 12 SP3
 before 78-35.3.1
78-35.3.1
MozillaFirefox
SUSE:Linux Enterprise Server for SAP Applications 12 SP4
 before 78.0.1-112.3.1
78.0.1-112.3.1
MozillaFirefox-branding-SLE
SUSE:Linux Enterprise Server for SAP Applications 12 SP4
 before 78-35.3.1
78-35.3.1
MozillaFirefox
SUSE:Linux Enterprise Software Development Kit 12 SP5
 before 78.0.1-112.3.1
78.0.1-112.3.1
MozillaFirefox
SUSE:Linux Enterprise Server 12 SP2-LTSS
 before 78.0.1-112.3.1
78.0.1-112.3.1
MozillaFirefox-branding-SLE
SUSE:Linux Enterprise Server 12 SP2-LTSS
 before 78-35.3.1
78-35.3.1
MozillaFirefox
SUSE:Linux Enterprise Server 12 SP2-BCL
 before 78.0.1-112.3.1
78.0.1-112.3.1
MozillaFirefox-branding-SLE
SUSE:Linux Enterprise Server 12 SP2-BCL
 before 78-35.3.1
78-35.3.1
MozillaFirefox
SUSE:Linux Enterprise Server 12 SP3-LTSS
 before 78.0.1-112.3.1
78.0.1-112.3.1
MozillaFirefox-branding-SLE
SUSE:Linux Enterprise Server 12 SP3-LTSS
 before 78-35.3.1
78-35.3.1
MozillaFirefox
SUSE:Linux Enterprise Server 12 SP3-BCL
 before 78.0.1-112.3.1
78.0.1-112.3.1
MozillaFirefox-branding-SLE
SUSE:Linux Enterprise Server 12 SP3-BCL
 before 78-35.3.1
78-35.3.1
MozillaFirefox
SUSE:Linux Enterprise Server 12 SP4-LTSS
 before 78.0.1-112.3.1
78.0.1-112.3.1
MozillaFirefox-branding-SLE
SUSE:Linux Enterprise Server 12 SP4-LTSS
 before 78-35.3.1
78-35.3.1
MozillaFirefox
SUSE:Linux Enterprise Server 12 SP5
 before 78.0.1-112.3.1
78.0.1-112.3.1
MozillaFirefox-branding-SLE
SUSE:Linux Enterprise Server 12 SP5
 before 78-35.3.1
78-35.3.1
MozillaFirefox
SUSE:Linux Enterprise Server for SAP Applications 12 SP5
 before 78.0.1-112.3.1
78.0.1-112.3.1
MozillaFirefox-branding-SLE
SUSE:Linux Enterprise Server for SAP Applications 12 SP5
 before 78-35.3.1
78-35.3.1
MozillaFirefox
SUSE:Enterprise Storage 5
 before 78.0.1-112.3.1
78.0.1-112.3.1
MozillaFirefox-branding-SLE
SUSE:Enterprise Storage 5
 before 78-35.3.1
78-35.3.1
MozillaThunderbird
SUSE:Linux Enterprise Workstation Extension 15 SP1
 before 68.10.0-3.88.1
68.10.0-3.88.1
MozillaThunderbird
SUSE:Linux Enterprise Workstation Extension 15 SP2
 before 68.10.0-3.88.1
68.10.0-3.88.1
firefox
Ubuntu:16.04:LTS
 before 78.0.1+build1-0ubuntu0.16.04.1, plus listed versions
41.0.2+build2-0ubuntu142.0+build2-0ubuntu144.0+build3-0ubuntu244.0.1+build1-0ubuntu144.0.2+build1-0ubuntu1
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45.0+build2-0ubuntu145.0.1+build1-0ubuntu145.0.2+build1-0ubuntu146.0+build5-0ubuntu0.16.04.246.0.1+build1-0ubuntu0.16.04.247.0+build3-0ubuntu0.16.04.148.0+build2-0ubuntu0.16.04.149.0+build4-0ubuntu0.16.04.149.0.2+build2-0ubuntu0.16.04.250.0+build2-0ubuntu0.16.04.250.0.2+build1-0ubuntu0.16.04.150.1.0+build2-0ubuntu0.16.04.151.0.1+build2-0ubuntu0.16.04.151.0.1+build2-0ubuntu0.16.04.252.0+build2-0ubuntu0.16.04.152.0.1+build2-0ubuntu0.16.04.152.0.2+build1-0ubuntu0.16.04.153.0+build6-0ubuntu0.16.04.153.0.2+build1-0ubuntu0.16.04.253.0.3+build1-0ubuntu0.16.04.254.0+build3-0ubuntu0.16.04.155.0.1+build2-0ubuntu0.16.04.255.0.2+build1-0ubuntu0.16.04.156.0+build6-0ubuntu0.16.04.156.0+build6-0ubuntu0.16.04.257.0+build4-0ubuntu0.16.04.557.0+build4-0ubuntu0.16.04.657.0.1+build2-0ubuntu0.16.04.157.0.3+build1-0ubuntu0.16.04.157.0.4+build1-0ubuntu0.16.04.158.0+build6-0ubuntu0.16.04.158.0.1+build1-0ubuntu0.16.04.158.0.2+build1-0ubuntu0.16.04.159.0+build5-0ubuntu0.16.04.159.0.1+build1-0ubuntu0.16.04.159.0.2+build1-0ubuntu0.16.04.159.0.2+build1-0ubuntu0.16.04.360.0+build2-0ubuntu0.16.04.160.0.1+build2-0ubuntu0.16.04.160.0.2+build1-0ubuntu0.16.04.161.0+build3-0ubuntu0.16.04.261.0.1+build1-0ubuntu0.16.04.162.0+build2-0ubuntu0.16.04.362.0+build2-0ubuntu0.16.04.462.0+build2-0ubuntu0.16.04.5
78.0.1+build1-0ubuntu0.16.04.1
thunderbird
Ubuntu:16.04:LTS
 before 1:68.10.0+build1-0ubuntu0.16.04.1, plus listed versions
1:38.3.0+build1-0ubuntu21:38.5.1+build2-0ubuntu11:38.6.0+build1-0ubuntu11:38.7.2+build1-0ubuntu0.16.04.11:38.8.0+build1-0ubuntu0.16.04.1
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1:45.2.0+build1-0ubuntu0.16.04.11:45.3.0+build1-0ubuntu0.16.04.21:45.4.0+build1-0ubuntu0.16.04.11:45.5.1+build1-0ubuntu0.16.04.11:45.7.0+build1-0ubuntu0.16.04.11:45.8.0+build1-0ubuntu0.16.04.11:52.1.1+build1-0ubuntu0.16.04.11:52.2.1+build1-0ubuntu0.16.04.11:52.3.0+build1-0ubuntu0.16.04.11:52.4.0+build1-0ubuntu0.16.04.21:52.5.0+build1-0ubuntu0.16.04.11:52.6.0+build1-0ubuntu0.16.04.11:52.7.0+build1-0ubuntu0.16.04.11:52.8.0+build1-0ubuntu0.16.04.11:52.9.1+build3-0ubuntu0.16.04.11:60.2.1+build1-0ubuntu0.16.04.41:60.4.0+build2-0ubuntu0.16.04.11:60.5.1+build2-0ubuntu0.16.04.11:60.6.1+build2-0ubuntu0.16.04.11:60.7.0+build1-0ubuntu0.16.04.11:60.7.1+build1-0ubuntu0.16.04.11:60.7.2+build2-0ubuntu0.16.04.11:60.8.0+build1-0ubuntu0.16.04.21:60.9.0+build1-0ubuntu0.16.04.21:60.9.1+build1-0ubuntu0.16.04.11:68.7.0+build1-0ubuntu0.16.04.21:68.8.0+build2-0ubuntu0.16.04.2
1:68.10.0+build1-0ubuntu0.16.04.1
firefox
Ubuntu:18.04:LTS
 before 78.0.1+build1-0ubuntu0.18.04.1, plus listed versions
56.0+build6-0ubuntu157.0.1+build2-0ubuntu159.0.1+build1-0ubuntu159.0.2+build1-0ubuntu160.0+build2-0ubuntu1
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60.0.1+build2-0ubuntu0.18.04.160.0.2+build1-0ubuntu0.18.04.161.0+build3-0ubuntu0.18.04.161.0.1+build1-0ubuntu0.18.04.162.0+build2-0ubuntu0.18.04.362.0+build2-0ubuntu0.18.04.462.0+build2-0ubuntu0.18.04.562.0.3+build1-0ubuntu0.18.04.163.0+build2-0ubuntu0.18.04.263.0.3+build1-0ubuntu0.18.04.164.0+build3-0ubuntu0.18.04.165.0+build2-0ubuntu0.18.04.165.0.1+build2-0ubuntu0.18.04.166.0+build3-0ubuntu0.18.04.166.0.1+build1-0ubuntu0.18.04.166.0.2+build1-0ubuntu0.18.04.166.0.3+build1-0ubuntu0.18.04.166.0.4+build3-0ubuntu0.18.04.166.0.5+build1-0ubuntu0.18.04.167.0+build2-0ubuntu0.18.04.167.0.1+build1-0ubuntu0.18.04.167.0.2+build2-0ubuntu0.18.04.167.0.3+build1-0ubuntu0.18.04.167.0.4+build1-0ubuntu0.18.04.168.0+build3-0ubuntu0.18.04.168.0.1+build1-0ubuntu0.18.04.168.0.2+build1-0ubuntu0.18.04.169.0+build2-0ubuntu0.18.04.169.0.1+build1-0ubuntu0.18.04.169.0.2+build1-0ubuntu0.18.04.170.0+build2-0ubuntu0.18.04.170.0.1+build1-0ubuntu0.18.04.171.0+build5-0ubuntu0.18.04.172.0.1+build1-0ubuntu0.18.04.172.0.2+build1-0ubuntu0.18.04.173.0+build3-0ubuntu0.18.04.173.0.1+build1-0ubuntu0.18.04.174.0+build3-0ubuntu0.18.04.174.0.1+build1-0ubuntu0.18.04.175.0+build3-0ubuntu0.18.04.176.0+build2-0ubuntu0.18.04.176.0.1+build1-0ubuntu0.18.04.177.0.1+build1-0ubuntu0.18.04.1
78.0.1+build1-0ubuntu0.18.04.1
thunderbird
Ubuntu:18.04:LTS
 before 1:68.10.0+build1-0ubuntu0.18.04.1, plus listed versions
1:52.4.0+build1-0ubuntu21:52.6.0+build1-0ubuntu11:52.7.0+build1-0ubuntu11:52.8.0+build1-0ubuntu0.18.04.11:52.9.1+build3-0ubuntu0.18.04.1
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1:60.2.1+build1-0ubuntu0.18.04.21:60.4.0+build2-0ubuntu0.18.04.11:60.5.1+build2-0ubuntu0.18.04.11:60.6.1+build2-0ubuntu0.18.04.11:60.7.0+build1-0ubuntu0.18.04.11:60.7.1+build1-0ubuntu0.18.04.11:60.7.2+build2-0ubuntu0.18.04.11:60.8.0+build1-0ubuntu0.18.04.11:60.9.0+build1-0ubuntu0.18.04.11:68.2.1+build1-0ubuntu0.18.04.11:68.2.2+build1-0ubuntu0.18.04.11:68.4.1+build1-0ubuntu0.18.04.11:68.7.0+build1-0ubuntu0.18.04.11:68.8.0+build2-0ubuntu0.18.04.2
1:68.10.0+build1-0ubuntu0.18.04.1
mozjs52
Ubuntu:18.04:LTS
 All versions, plus listed versions
52.3.1-0ubuntu352.3.1-7fakesync152.8.1-0ubuntu0.18.04.152.9.1-0ubuntu0.18.04.1
 None known
mozjs38
Ubuntu:18.04:LTS
 All versions, plus listed versions
38.8.0~repack1-0ubuntu138.8.0~repack1-0ubuntu338.8.0~repack1-0ubuntu4
 None known
firefox
Ubuntu:20.04:LTS
 before 78.0.1+build1-0ubuntu0.20.04.1, plus listed versions
69.0.3+build1-0ubuntu170.0+build2-0ubuntu170.0+build2-0ubuntu270.0.1+build1-0ubuntu271.0+build2-0ubuntu2
Show 15 moreShow less
71.0+build5-0ubuntu172.0.1+build1-0ubuntu172.0.2+build1-0ubuntu173.0+build1-0ubuntu173.0+build2-0ubuntu173.0+build3-0ubuntu173.0.1+build1-0ubuntu174.0+build1-0ubuntu174.0+build2-0ubuntu174.0+build2-0ubuntu274.0+build3-0ubuntu175.0+build3-0ubuntu176.0+build2-0ubuntu0.20.04.176.0.1+build1-0ubuntu0.20.04.177.0.1+build1-0ubuntu0.20.04.1
78.0.1+build1-0ubuntu0.20.04.1
thunderbird
Ubuntu:20.04:LTS
 before 1:68.10.0+build1-0ubuntu0.20.04.1, plus listed versions
1:68.1.2+build1-0ubuntu11:68.1.2+build1-0ubuntu21:68.2.1+build1-0ubuntu11:68.2.2+build1-0ubuntu11:68.3.0+build2-0ubuntu1
Show 8 moreShow less
1:68.3.1+build1-0ubuntu21:68.4.1+build1-0ubuntu11:68.4.2+build2-0ubuntu11:68.5.0+build1-0ubuntu11:68.6.0+build2-0ubuntu11:68.7.0+build1-0ubuntu11:68.7.0+build1-0ubuntu21:68.8.0+build2-0ubuntu0.20.04.2
1:68.10.0+build1-0ubuntu0.20.04.1
mozjs68
Ubuntu:20.04:LTS
 All versions, plus listed versions
68.5.0-1~fakesync68.5.0-2~fakesync68.6.0-168.6.0-1ubuntu1
 None known
mozjs52
Ubuntu:20.04:LTS
 All versions, plus listed versions
52.9.1-1build152.9.1-1ubuntu3
 None known
MozillaThunderbird
openSUSE:Leap 15.1
 before 68.10.0-lp151.2.44.2
68.10.0-lp151.2.44.2
MozillaThunderbird
openSUSE:Leap 15.2
 before 68.10.0-lp152.2.4.1
68.10.0-lp152.2.4.1
MozillaFirefox
openSUSE:Leap 15.2
 before 78.0.1-lp152.2.5.1
78.0.1-lp152.2.5.1
MozillaFirefox
openSUSE:Leap 15.1
 before 78.0.1-lp151.2.53.1
78.0.1-lp151.2.53.1
MozillaFirefox
openSUSE:Tumbleweed
 before 92.0-1.2
92.0-1.2
MozillaThunderbird
openSUSE:Tumbleweed
 before 91.1.1-1.1
91.1.1-1.1
firefox-esr
openSUSE:Tumbleweed
 before 128.5.1-1.1
128.5.1-1.1

History

History
RecordedChangedSources
affected, aliases, referencesOSV
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-12419 is a high vulnerability (CVSS 8.8) in Mozilla Firefox, published July 1, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.32%, the 83rd percentile. Fixed in firefox 78.0-r0.

References

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This page doesn't list everything

Left out here: 241 versions and 1,851 references. The JSON record has them.

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