CVE-2018-12386

A vulnerability in register allocation in JavaScript can lead to type confusion, allowing for an arbitrary read and write. This leads to remote code execution inside the sandboxed content process when triggered. This vulnerability affects Firefox ESR < 60.2.2 and Firefox < 62.0.3.

Updated firefox packages fix security vulnerabilities:

A vulnerability in register allocation in JavaScript can lead to type confusion, allowing for an arbitrary read and write. This leads to remote code execution inside the sandboxed content process when triggered (CVE-2018-12386).

A vulnerability where the JavaScript JIT compiler inlines Array.prototype.push with multiple arguments that results in the stack pointer being off by 8 bytes after a bailout. This leaks a memory address to the calling function which can be used as part of an exploit inside the sandboxed content process (CVE-2018-12387).

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 firefox-esr-128.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

This update for MozillaFirefox to 60.2.2ESR fixes the following issues:

Security issues fixed:

MFSA 2018-24:

• CVE-2018-12386: A Type confusion in JavaScript allowed remote code execution (bsc#1110506)
• CVE-2018-12387: Array.prototype.push stack pointer vulnerability may have enabled exploits in the sandboxed content process (bsc#1110507)

MFSA 2018-23:

• CVE-2018-12385: Fixed a crash in TransportSecurityInfo due to cached data (bsc#1109363)
• CVE-2018-12383: Setting a master password did not delete unencrypted previously stored passwords (bsc#1107343)

Non security issues fixed:

• Avoid undefined behavior in IPC fd-passing code (bsc#1094767)
• Fixed a startup crash affecting users migrating from older ESR releases
• Clean up old NSS DB files after upgrading
• Fixed an endianness problem in bindgen's handling of bitfields, which was causing Firefox to crash on startup on big-endian machines. Also, updates the cc crate, which was buggy in the version that was originally vendored in. (bsc#1109465)

This update for MozillaFirefox to ESR 60.2.2 fixes several issues.

These general changes are part of the version 60 release.

• New browser engine with speed improvements
• Redesigned graphical user interface elements
• Unified address and search bar for new installations
• New tab page listing top visited, recently visited and recommended pages
• Support for configuration policies in enterprise deployments via JSON files
• Support for Web Authentication, allowing the use of USB tokens for authentication to web sites

The following changes affect compatibility:

• Now exclusively supports extensions built using the WebExtension API.
• Unsupported legacy extensions will no longer work in Firefox 60 ESR
• TLS certificates issued by Symantec before June 1st, 2016 are no longer trusted The 'security.pki.distrust_ca_policy' preference can be set to 0 to reinstate trust in those certificates

The following issues affect performance:

• new format for storing private keys, certificates and certificate trust If the user home or data directory is on a network file system, it is recommended that users set the following environment variable to avoid slowdowns: NSS_SDB_USE_CACHE=yes This setting is not recommended for local, fast file systems.

These security issues were fixed:

• CVE-2018-12381: Dragging and dropping Outlook email message results in page navigation (bsc#1107343).
• CVE-2017-16541: Proxy bypass using automount and autofs (bsc#1107343).
• CVE-2018-12376: Various memory safety bugs (bsc#1107343).
• CVE-2018-12377: Use-after-free in refresh driver timers (bsc#1107343).
• CVE-2018-12378: Use-after-free in IndexedDB (bsc#1107343).
• CVE-2018-12379: Out-of-bounds write with malicious MAR file (bsc#1107343).
• CVE-2018-12386: Type confusion in JavaScript allowed remote code execution (bsc#1110506)
• CVE-2018-12387: Array.prototype.push stack pointer vulnerability may enable exploits in the sandboxed content process (bsc#1110507)
• CVE-2018-12385: Crash in TransportSecurityInfo due to cached data (bsc#1109363)
• CVE-2018-12383: Setting a master password did not delete unencrypted previously stored passwords (bsc#1107343)

This update for mozilla-nspr to version 4.19 fixes the follwing issues

• Added TCP Fast Open functionality
• A socket without PR_NSPR_IO_LAYER will no longer trigger an assertion when polling

This update for mozilla-nss to version 3.36.4 fixes the follwing issues

• Connecting to a server that was recently upgraded to TLS 1.3 would result in a SSL_RX_MALFORMED_SERVER_HELLO error.
• Fix a rare bug with PKCS#12 files.
• Replaces existing vectorized ChaCha20 code with verified HACL* implementation.
• TLS 1.3 support has been updated to draft -23.
• Added formally verified implementations of non-vectorized Chacha20 and non-vectorized Poly1305 64-bit.
• The following CA certificates were Removed: OU = Security Communication EV RootCA1 CN = CA Disig Root R1 CN = DST ACES CA X6 Certum CA, O=Unizeto Sp. z o.o. StartCom Certification Authority StartCom Certification Authority G2 TÜBİTAK UEKAE Kök Sertifika Hizmet Sağlayıcısı - Sürüm 3 ACEDICOM Root Certinomis - Autorité Racine TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı PSCProcert CA 沃通根证书, O=WoSign CA Limited Certification Authority of WoSign Certification Authority of WoSign G2 CA WoSign ECC Root Subject CN = VeriSign Class 3 Secure Server CA - G2 O = Japanese Government, OU = ApplicationCA CN = WellsSecure Public Root Certificate Authority CN = TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı H6 CN = Microsec e-Szigno Root

• The following CA certificates were Removed: AddTrust Public CA Root AddTrust Qualified CA Root China Internet Network Information Center EV Certificates Root CNNIC ROOT ComSign Secured CA GeoTrust Global CA 2 Secure Certificate Services Swisscom Root CA 1 Swisscom Root EV CA 2 Trusted Certificate Services …

This update for MozillaFirefox to ESR 60.2.2 fixes several issues.

These general changes are part of the version 60 release.

• New browser engine with speed improvements
• Redesigned graphical user interface elements
• Unified address and search bar for new installations
• New tab page listing top visited, recently visited and recommended pages
• Support for configuration policies in enterprise deployments via JSON files
• Support for Web Authentication, allowing the use of USB tokens for authentication to web sites

The following changes affect compatibility:

• Now exclusively supports extensions built using the WebExtension API.
• Unsupported legacy extensions will no longer work in Firefox 60 ESR
• TLS certificates issued by Symantec before June 1st, 2016 are no longer trusted The 'security.pki.distrust_ca_policy' preference can be set to 0 to reinstate trust in those certificates

The following issues affect performance:

• new format for storing private keys, certificates and certificate trust If the user home or data directory is on a network file system, it is recommended that users set the following environment variable to avoid slowdowns: NSS_SDB_USE_CACHE=yes This setting is not recommended for local, fast file systems.

These security issues were fixed:

• CVE-2018-12381: Dragging and dropping Outlook email message results in page navigation (bsc#1107343).
• CVE-2017-16541: Proxy bypass using automount and autofs (bsc#1107343).
• CVE-2018-12376: Various memory safety bugs (bsc#1107343).
• CVE-2018-12377: Use-after-free in refresh driver timers (bsc#1107343).
• CVE-2018-12378: Use-after-free in IndexedDB (bsc#1107343).
• CVE-2018-12379: Out-of-bounds write with malicious MAR file (bsc#1107343).
• CVE-2018-12386: Type confusion in JavaScript allowed remote code execution (bsc#1110506)
• CVE-2018-12387: Array.prototype.push stack pointer vulnerability may enable exploits in the sandboxed content process (bsc#1110507)
• CVE-2018-12385: Crash in TransportSecurityInfo due to cached data (bsc#1109363)
• CVE-2018-12383: Setting a master password did not delete unencrypted previously stored passwords (bsc#1107343)

This update for mozilla-nspr to version 4.19 fixes the follwing issues

• Added TCP Fast Open functionality
• A socket without PR_NSPR_IO_LAYER will no longer trigger an assertion when polling

This update for mozilla-nss to version 3.36.4 fixes the follwing issues

• Connecting to a server that was recently upgraded to TLS 1.3 would result in a SSL_RX_MALFORMED_SERVER_HELLO error.
• Fix a rare bug with PKCS#12 files.
• Replaces existing vectorized ChaCha20 code with verified HACL* implementation.
• TLS 1.3 support has been updated to draft -23.
• Added formally verified implementations of non-vectorized Chacha20 and non-vectorized Poly1305 64-bit.
• The following CA certificates were Removed: OU = Security Communication EV RootCA1 CN = CA Disig Root R1 CN = DST ACES CA X6 Certum CA, O=Unizeto Sp. z o.o. StartCom Certification Authority StartCom Certification Authority G2 TÜBİTAK UEKAE Kök Sertifika Hizmet Sağlayıcısı - Sürüm 3 ACEDICOM Root Certinomis - Autorité Racine TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı PSCProcert CA 沃通根证书, O=WoSign CA Limited Certification Authority of WoSign Certification Authority of WoSign G2 CA WoSign ECC Root Subject CN = VeriSign Class 3 Secure Server CA - G2 O = Japanese Government, OU = ApplicationCA CN = WellsSecure Public Root Certificate Authority CN = TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı H6 CN = Microsec e-Szigno Root

• The following CA certificates were Removed: AddTrust Public CA Root AddTrust Qualified CA Root China Internet Network Information Center EV Certificates Root CNNIC ROOT ComSign Secured CA GeoTrust Global CA 2 Secure Certificate Services Swisscom Root CA 1 Swisscom Root EV CA 2 Trusted Certificate Services …

A crash was discovered in TransportSecurityInfo used for SSL, which could be triggered by data stored in the local cache directory. An attacker could potentially exploit this in combination with another vulnerability that allowed them to write data to the cache, to execute arbitrary code. (CVE-2018-12385)

A type confusion bug was discovered in JavaScript. If a user were tricked in to opening a specially crafted website, an attacker could exploit this to cause a denial of service, or execute arbitrary code. (CVE-2018-12386)

It was discovered that the Array.prototype.push could leak memory addresses to the calling function in some circumstances. An attacker could exploit this in combination with another vulnerability to help execute arbitrary code. (CVE-2018-12387)