CVE-2020-6831

A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.

A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.

Updated firefox packages fix security vulnerabilities:

A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruption and a potentially exploitable crash (CVE-2020-6831).

A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. This resulted in a potentially exploitable crash (CVE-2020-12387).

The 'Copy as cURL' feature of Devtools' network tab did not properly escape the HTTP POST data of a request, which can be controlled by the website. If a user used the 'Copy as cURL' feature and pasted the command into a terminal, it could have resulted in the disclosure of local files (CVE-2020-12392).

Mozilla developers and community members Alexandru Michis, Jason Kratzer, philipp, Ted Campbell, Bas Schouten, André Bargull, and Karl Tomlinson reported memory safety bugs present in Firefox ESR 68.7. 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-2020-12395).

nss has been updated to 3.52. rootcerts have been updated to drop some obsolete certs fixing support for nss 3.52.

Updated thunderbird packages fix security vulnerabilities:

A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruption and a potentially exploitable crash (CVE-2020-6831).

A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. This resulted in a potentially exploitable crash (CVE-2020-12387).

The 'Copy as cURL' feature of Devtools' network tab did not properly escape the HTTP POST data of a request, which can be controlled by the website. If a user used the 'Copy as cURL' feature and pasted the command into a terminal, it could have resulted in the disclosure of local files (CVE-2020-12392).

Mozilla developers and community members Alexandru Michis, Jason Kratzer, philipp, Ted Campbell, Bas Schouten, André Bargull, and Karl Tomlinson reported memory safety bugs present in Thunderbird ESR 68.7. 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-2020-12395).

By encoding Unicode whitespace characters within the From email header, an attacker can spoof the sender email address that Thunderbird displays (CVE-2020-12397).

Chromium-browser 81.0.4044.138 fixes security issues:

Multiple flaws were found in the way Chromium 81.0.4044.129 processes various types of web content, where loading a web page containing malicious content could cause Chromium to crash, execute arbitrary code, or disclose sensitive information. (CVE-2020-6464, CVE-2020-6831)

This update for chromium fixes the following issues:

Update to 81.0.4044.138 (boo#1171247):

• CVE-2020-6831: Stack buffer overflow in SCTP
• CVE-2020-6464: Type Confusion in Blink

This update for MozillaFirefox fixes the following issues:

Update to version 68.8.0 ESR (bsc#1171186):

• CVE-2020-12387: Use-after-free during worker shutdown
• CVE-2020-12388: Sandbox escape with improperly guarded Access Tokens
• CVE-2020-12389: Sandbox escape with improperly separated process types
• CVE-2020-6831: Buffer overflow in SCTP chunk input validation
• CVE-2020-12392: Arbitrary local file access with 'Copy as cURL'
• CVE-2020-12393: Devtools' 'Copy as cURL' feature did not fully escape website-controlled data, potentially leading to command injection
• CVE-2020-12395: Memory safety bugs fixed in Firefox 76 and Firefox ESR 68.8

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

This update for MozillaThunderbird fixes the following issues:

• Update to 68.8.0 ESR MFSA 2020-18 (bsc#1171186)
  • CVE-2020-12397 (bmo#1617370) Sender Email Address Spoofing using encoded Unicode characters
  • CVE-2020-12387 (bmo#1545345) Use-after-free during worker shutdown
  • CVE-2020-6831 (bmo#1632241) Buffer overflow in SCTP chunk input validation
  • CVE-2020-12392 (bmo#1614468) Arbitrary local file access with 'Copy as cURL'
  • CVE-2020-12393 (bmo#1615471) Devtools' 'Copy as cURL' feature did not fully escape website-controlled data, potentially leading to command injection
  • CVE-2020-12395 (bmo#1595886, bmo#1611482, bmo#1614704, bmo#1624098, bmo#1625749, bmo#1626382, bmo#1628076, bmo#1631508) Memory safety bugs fixed in Thunderbird 68.8.0

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

This update for chromium fixes the following issues:

Update to 81.0.4044.138 (boo#1171247):

• CVE-2020-6831: Stack buffer overflow in SCTP
• CVE-2020-6464: Type Confusion in Blink

This update was imported from the openSUSE:Leap:15.1:Update update project.

This update for opera fixes the following issues:

Opera was updated to version 68.0.3618.104

• CHR-7909 Update chromium on desktop-stable-81-3618 to 81.0.4044.138
  • CVE-2020-6831, CVE-2020-6464
• DNA-85609 [Mac] Tabs shrinking & disappearing
• DNA-85629 Crash at opera::DownloadButtonPanel::ShouldShowCancelButton()
• DNA-85669 Add mocking of AddressDropdownModel in AddressBarControllerTest
• DNA-85678 Wrong badge icon on pages with mixed content on desktop-stable-81-3618
• DNA-85820 Flags are blue in default [D] state after restart
• DNA-85822 Full screen snap on pkobp.pl
• DNA-86077 Problem to upload .JPG file as an wallpaper
• DNA-86165 Downloads list doesn’t returns to its original state after clearing search filter
• DNA-86236 [Mac] Plus button click area too small
• DNA-86241 X tab button is not visible
• DNA-86217 Fix performance issue with Background Worker

This update for opera fixes the following issues:

Opera was updated to version 68.0.3618.104

• CHR-7909 Update chromium on desktop-stable-81-3618 to 81.0.4044.138
  • CVE-2020-6831, CVE-2020-6464
• DNA-85609 [Mac] Tabs shrinking & disappearing
• DNA-85629 Crash at opera::DownloadButtonPanel::ShouldShowCancelButton()
• DNA-85669 Add mocking of AddressDropdownModel in AddressBarControllerTest
• DNA-85678 Wrong badge icon on pages with mixed content on desktop-stable-81-3618
• DNA-85820 Flags are blue in default [D] state after restart
• DNA-85822 Full screen snap on pkobp.pl
• DNA-86077 Problem to upload .JPG file as an wallpaper
• DNA-86165 Downloads list doesn’t returns to its original state after clearing search filter
• DNA-86236 [Mac] Plus button click area too small
• DNA-86241 X tab button is not visible
• DNA-86217 Fix performance issue with Background Worker

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

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

These are all security issues fixed in the chromedriver-93.0.4577.82-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the ungoogled-chromium-113.0.5672.92-1.1 package on the GA media of openSUSE Tumbleweed.

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

This update for MozillaFirefox fixes the following issues:

Update to version 68.8.0 ESR (bsc#1171186):

• CVE-2020-12387: Use-after-free during worker shutdown
• CVE-2020-12388: Sandbox escape with improperly guarded Access Tokens
• CVE-2020-12389: Sandbox escape with improperly separated process types
• CVE-2020-6831: Buffer overflow in SCTP chunk input validation
• CVE-2020-12392: Arbitrary local file access with 'Copy as cURL'
• CVE-2020-12393: Devtools' 'Copy as cURL' feature did not fully escape website-controlled data, potentially leading to command injection
• CVE-2020-12395: Memory safety bugs fixed in Firefox 76 and Firefox ESR 68.8

This update for MozillaFirefox fixes the following issues:

Update to version 68.8.0 ESR (bsc#1171186):

• CVE-2020-12387: Use-after-free during worker shutdown
• CVE-2020-12388: Sandbox escape with improperly guarded Access Tokens
• CVE-2020-12389: Sandbox escape with improperly separated process types
• CVE-2020-6831: Buffer overflow in SCTP chunk input validation
• CVE-2020-12392: Arbitrary local file access with 'Copy as cURL'
• CVE-2020-12393: Devtools' 'Copy as cURL' feature did not fully escape website-controlled data, potentially leading to command injection
• CVE-2020-12395: Memory safety bugs fixed in Firefox 76 and Firefox ESR 68.8

This update for MozillaThunderbird fixes the following issues:

• Update to 68.8.0 ESR MFSA 2020-18 (bsc#1171186)
  • CVE-2020-12397 (bmo#1617370) Sender Email Address Spoofing using encoded Unicode characters
  • CVE-2020-12387 (bmo#1545345) Use-after-free during worker shutdown
  • CVE-2020-6831 (bmo#1632241) Buffer overflow in SCTP chunk input validation
  • CVE-2020-12392 (bmo#1614468) Arbitrary local file access with 'Copy as cURL'
  • CVE-2020-12393 (bmo#1615471) Devtools' 'Copy as cURL' feature did not fully escape website-controlled data, potentially leading to command injection
  • CVE-2020-12395 (bmo#1595886, bmo#1611482, bmo#1614704, bmo#1624098, bmo#1625749, bmo#1626382, bmo#1628076, bmo#1631508) Memory safety bugs fixed in Thunderbird 68.8.0

This update for MozillaFirefox fixes the following issues:

• Firefox Extended Support Release 68.8.0 ESR MFSA 2020-17 (bsc#1171186)

  • CVE-2020-12387 (bmo#1545345) Use-after-free during worker shutdown
  • CVE-2020-12388 (bmo#1618911) Sandbox escape with improperly guarded Access Tokens
  • CVE-2020-12389 (bmo#1554110) Sandbox escape with improperly separated process types
  • CVE-2020-6831 (bmo#1632241) Buffer overflow in SCTP chunk input validation
  • CVE-2020-12392 (bmo#1614468) Arbitrary local file access with 'Copy as cURL'
  • CVE-2020-12393 (bmo#1615471) Devtools' 'Copy as cURL' feature did not fully escape website-controlled data, potentially leading to command injection
  • CVE-2020-12395 (bmo#1595886, bmo#1611482, bmo#1614704, bmo#1624098, bmo#1625749, bmo#1626382, bmo#1628076, bmo#1631508) Memory safety bugs fixed in Firefox 76 and Firefox ESR 68.8

• Since firefox-gcc8 now has disabled autoreqprov for firefox-libstdc++6 and firefox-libgcc_s1, those packages don't provide some capabilities, we have to disable AutoReqProv in MozillaFirefox too so they're not added as automatic requirements. (bsc#1162828)

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, bypass security restrictions, spoof the URL bar, or execute arbitrary code. (CVE-2020-6831, CVE-2020-12387, CVE-2020-12390, CVE-2020-12391, CVE-2020-12394, CVE-2020-12395, CVE-2020-12396)

It was discovered that the Devtools’ ‘Copy as cURL’ feature did not properly escape the HTTP POST data of a request. If a user were tricked in to using the ‘Copy as cURL’ feature to copy and paste a command with specially crafted data in to a terminal, an attacker could potentially exploit this to obtain sensitive information from local files. (CVE-2020-12392)

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, or execute arbitrary code. (CVE-2020-6831, CVE-2020-12387, CVE-2020-12395)

It was discovered that the Devtools’ ‘Copy as cURL’ feature did not properly escape the HTTP POST data of a request. If a user were tricked in to using the ‘Copy as cURL’ feature to copy and paste a command with specially crafted data in to a terminal, an attacker could potentially exploit this to obtain sensitive information from local files. (CVE-2020-12392)

It was discovered that Thunderbird did not correctly handle Unicode whitespace characters within the From email header. An attacker could potentially exploit this to spoof the sender email address that Thunderbird displays. (CVE-2020-12397)