CVE-2020-27918

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.1, iOS 14.2 and iPadOS 14.2, iCloud for Windows 11.5, Safari 14.0.1, tvOS 14.2, iTunes 12.11 for Windows. Processing maliciously crafted web content may lead to arbitrary code execution.

GNOME is the default desktop environment of Rocky Linux.

The following packages have been upgraded to a later upstream version: gdm (40.0), webkit2gtk3 (2.32.3). (BZ#1909300)

Security Fix(es):

• webkitgtk: Use-after-free in AudioSourceProviderGStreamer leading to arbitrary code execution (CVE-2020-13558)

• LibRaw: Stack buffer overflow in LibRaw::identify_process_dng_fields() in identify.cpp (CVE-2020-24870)

• webkitgtk: Use-after-free leading to arbitrary code execution (CVE-2020-27918)

• webkitgtk: IFrame sandboxing policy violation (CVE-2021-1765)

• webkitgtk: Use-after-free leading to arbitrary code execution (CVE-2021-1788)

• webkitgtk: Type confusion issue leading to arbitrary code execution (CVE-2021-1789)

• webkitgtk: Access to restricted ports on arbitrary servers via port redirection (CVE-2021-1799)

• webkitgtk: IFrame sandboxing policy violation (CVE-2021-1801)

• webkitgtk: Memory corruption issue leading to arbitrary code execution (CVE-2021-1844)

• webkitgtk: Logic issue leading to arbitrary code execution (CVE-2021-1870)

• webkitgtk: Logic issue leading to arbitrary code execution (CVE-2021-1871)

• webkitgtk: Use-after-free in ImageLoader dispatchPendingErrorEvent leading to information leak and possibly code execution (CVE-2021-21775)

• webkitgtk: Use-after-free in WebCore::GraphicsContext leading to information leak and possibly code execution (CVE-2021-21779)

• webkitgtk: Use-after-free in fireEventListeners leading to arbitrary code execution (CVE-2021-21806)

• webkitgtk: Integer overflow leading to arbitrary code execution (CVE-2021-30663)

• webkitgtk: Memory corruption leading to arbitrary code execution (CVE-2021-30665)

• webkitgtk: Logic issue leading to leak of sensitive user information (CVE-2021-30682)

• webkitgtk: Logic issue leading to universal cross site scripting attack (CVE-2021-30689)

• webkitgtk: Logic issue allowing access to restricted ports on arbitrary servers (CVE-2021-30720)

• webkitgtk: Memory corruptions leading to arbitrary code execution (CVE-2021-30734)

• webkitgtk: Cross-origin issue with iframe elements leading to universal cross site scripting attack (CVE-2021-30744)

• webkitgtk: Memory corruptions leading to arbitrary code execution (CVE-2021-30749)

• webkitgtk: Type confusion leading to arbitrary code execution (CVE-2021-30758)

• webkitgtk: Use-after-free leading to arbitrary code execution (CVE-2021-30795)

• webkitgtk: Insufficient checks leading to arbitrary code execution (CVE-2021-30797)

• webkitgtk: Memory corruptions leading to arbitrary code execution (CVE-2021-30799)

• webkitgtk: User may be unable to fully delete browsing history (CVE-2020-29623)

• gnome-autoar: Directory traversal via directory symbolic links pointing outside of the destination directory (CVE-2020-36241)

• gnome-autoar: Directory traversal via directory symbolic links pointing outside of the destination directory (incomplete CVE-2020-36241 fix) (CVE-2021-28650)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 8.5 Release Notes linked from the References section.

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.1, iOS 14.2 and iPadOS 14.2, iCloud for Windows 11.5, Safari 14.0.1, tvOS 14.2, iTunes 12.11 for Windows. Processing maliciously crafted web content may lead to arbitrary code execution.

GNOME is the default desktop environment of AlmaLinux.

The following packages have been upgraded to a later upstream version: gdm (40.0), webkit2gtk3 (2.32.3). (BZ#1909300)

Security Fix(es):

• webkitgtk: Use-after-free in AudioSourceProviderGStreamer leading to arbitrary code execution (CVE-2020-13558)

• LibRaw: Stack buffer overflow in LibRaw::identify_process_dng_fields() in identify.cpp (CVE-2020-24870)

• webkitgtk: Use-after-free leading to arbitrary code execution (CVE-2020-27918)

• webkitgtk: IFrame sandboxing policy violation (CVE-2021-1765)

• webkitgtk: Use-after-free leading to arbitrary code execution (CVE-2021-1788)

• webkitgtk: Type confusion issue leading to arbitrary code execution (CVE-2021-1789)

• webkitgtk: Access to restricted ports on arbitrary servers via port redirection (CVE-2021-1799)

• webkitgtk: IFrame sandboxing policy violation (CVE-2021-1801)

• webkitgtk: Memory corruption issue leading to arbitrary code execution (CVE-2021-1844)

• webkitgtk: Logic issue leading to arbitrary code execution (CVE-2021-1870)

• webkitgtk: Logic issue leading to arbitrary code execution (CVE-2021-1871)

• webkitgtk: Use-after-free in ImageLoader dispatchPendingErrorEvent leading to information leak and possibly code execution (CVE-2021-21775)

• webkitgtk: Use-after-free in WebCore::GraphicsContext leading to information leak and possibly code execution (CVE-2021-21779)

• webkitgtk: Use-after-free in fireEventListeners leading to arbitrary code execution (CVE-2021-21806)

• webkitgtk: Integer overflow leading to arbitrary code execution (CVE-2021-30663)

• webkitgtk: Memory corruption leading to arbitrary code execution (CVE-2021-30665)

• webkitgtk: Logic issue leading to leak of sensitive user information (CVE-2021-30682)

• webkitgtk: Logic issue leading to universal cross site scripting attack (CVE-2021-30689)

• webkitgtk: Logic issue allowing access to restricted ports on arbitrary servers (CVE-2021-30720)

• webkitgtk: Memory corruptions leading to arbitrary code execution (CVE-2021-30734)

• webkitgtk: Cross-origin issue with iframe elements leading to universal cross site scripting attack (CVE-2021-30744)

• webkitgtk: Memory corruptions leading to arbitrary code execution (CVE-2021-30749)

• webkitgtk: Type confusion leading to arbitrary code execution (CVE-2021-30758)

• webkitgtk: Use-after-free leading to arbitrary code execution (CVE-2021-30795)

• webkitgtk: Insufficient checks leading to arbitrary code execution (CVE-2021-30797)

• webkitgtk: Memory corruptions leading to arbitrary code execution (CVE-2021-30799)

• webkitgtk: User may be unable to fully delete browsing history (CVE-2020-29623)

• gnome-autoar: Directory traversal via directory symbolic links pointing outside of the destination directory (CVE-2020-36241)

• gnome-autoar: Directory traversal via directory symbolic links pointing outside of the destination directory (incomplete CVE-2020-36241 fix) (CVE-2021-28650)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

The webkit2 package has been updated to version 2.32.0, fixing several security issues and other bugs.

This update for webkit2gtk3 fixes the following issues:

• Update to version 2.32.0 (bsc#1184155):
  • Fix the authentication request port when URL omits the port.
  • Fix iframe scrolling when main frame is scrolled in async
  • scrolling mode.
  • Stop using g_memdup.
  • Show a warning message when overriding signal handler for
  • threading suspension.
  • Fix the build on RISC-V with GCC 11.
  • Fix several crashes and rendering issues.
  • Security fixes: CVE-2021-1788, CVE-2021-1844, CVE-2021-1871
• Update in version 2.30.6 (bsc#1184262):
  • Update user agent quirks again for Google Docs and Google Drive.
  • Fix several crashes and rendering issues.
  • Security fixes: CVE-2020-27918, CVE-2020-29623, CVE-2021-1765 CVE-2021-1789, CVE-2021-1799, CVE-2021-1801, CVE-2021-1870.
• Update _constraints for armv6/armv7 (bsc#1182719)
• restore NPAPI plugin support which was removed in 2.32.0

This update was imported from the SUSE:SLE-15-SP2:Update update project.

This update for webkit2gtk3 fixes the following issues:

• Update to version 2.34.3 (bsc#1194019).
• CVE-2021-30887: Fixed logic issue allowing unexpectedly unenforced Content Security Policy when processing maliciously crafted web content.
• CVE-2021-30890: Fixed logic issue allowing universal cross site scripting when processing maliciously crafted web content.

These are all security issues fixed in the libjavascriptcoregtk-4_0-18-2.32.4-1.1 package on the GA media of openSUSE Tumbleweed.

This update for webkit2gtk3 fixes the following issues:

• Update to version 2.32.0 (bsc#1184155):
  • Fix the authentication request port when URL omits the port.
  • Fix iframe scrolling when main frame is scrolled in async
  • scrolling mode.
  • Stop using g_memdup.
  • Show a warning message when overriding signal handler for
  • threading suspension.
  • Fix the build on RISC-V with GCC 11.
  • Fix several crashes and rendering issues.
  • Security fixes: CVE-2021-1788, CVE-2021-1844, CVE-2021-1871
• Update in version 2.30.6 (bsc#1184262):
  • Update user agent quirks again for Google Docs and Google Drive.
  • Fix several crashes and rendering issues.
  • Security fixes: CVE-2020-27918, CVE-2020-29623, CVE-2021-1765 CVE-2021-1789, CVE-2021-1799, CVE-2021-1801, CVE-2021-1870.
• Update _constraints for armv6/armv7 (bsc#1182719)
• restore NPAPI plugin support which was removed in 2.32.0

This update for webkit2gtk3 fixes the following issues:

• Update to version 2.32.0 (bsc#1184155):
  • Fix the authentication request port when URL omits the port.
  • Fix iframe scrolling when main frame is scrolled in async
  • scrolling mode.
  • Stop using g_memdup.
  • Show a warning message when overriding signal handler for
  • threading suspension.
  • Fix the build on RISC-V with GCC 11.
  • Fix several crashes and rendering issues.
  • Security fixes: CVE-2021-1788, CVE-2021-1844, CVE-2021-1871
• Update in version 2.30.6 (bsc#1184262):
  • Update user agent quirks again for Google Docs and Google Drive.
  • Fix several crashes and rendering issues.
  • Security fixes: CVE-2020-27918, CVE-2020-29623, CVE-2021-1765 CVE-2021-1789, CVE-2021-1799, CVE-2021-1801, CVE-2021-1870.
• Update _constraints for armv6/armv7 (bsc#1182719)
• restore NPAPI plugin support which was removed in 2.32.0

This update for webkit2gtk3 fixes the following issues:

• Update to version 2.32.1:
  • Improve handling of Media Capture devices.
  • Improve WebAudio playback.
  • Improve video orientation handling.
  • Improve seeking support for MSE playback.
  • Improve flush support in EME decryptors.
  • Fix HTTP status codes for requests done through a custom URI handler.
  • Fix the Bubblewrap sandbox in certain 32-bit systems.
  • Fix inconsistencies between the WebKitWebView.is-muted property state and values returned by webkit_web_view_is_playing_audio().
  • Fix the build with ENABLE_VIDEO=OFF.
  • Fix wrong timestamps for long-lived cookies.
  • Fix UI process crash when failing to load favicons.
  • Fix several crashes and rendering issues.
• Including Security fixes for: CVE-2021-1788, CVE-2021-1844, CVE-2021-1871, CVE-2020-27918, CVE-2020-29623, CVE-2021-1765, CVE-2021-1789, CVE-2021-1799, CVE-2021-1801, CVE-2021-1870, CVE-2020-13558, CVE-2020-13584, CVE-2020-9983, CVE-2020-13543, CVE-2020-9947, CVE-2020-9948, CVE-2020-9951.

This update for webkit2gtk3 fixes the following issues:

• Update to version 2.34.3 (bsc#1194019).
• CVE-2021-30887: Fixed logic issue allowing unexpectedly unenforced Content Security Policy when processing maliciously crafted web content.
• CVE-2021-30890: Fixed logic issue allowing universal cross site scripting when processing maliciously crafted web content.

This update for webkit2gtk3 fixes the following issues:

• Update to version 2.34.3 (bsc#1194019).
• CVE-2021-30887: Fixed logic issue allowing unexpectedly unenforced Content Security Policy when processing maliciously crafted web content.
• CVE-2021-30890: Fixed logic issue allowing universal cross site scripting when processing maliciously crafted web content.

This update for webkit2gtk3 fixes the following issues:

• Update to version 2.34.3 (bsc#1194019).
• CVE-2021-30887: Fixed logic issue allowing unexpectedly unenforced Content Security Policy when processing maliciously crafted web content.
• CVE-2021-30890: Fixed logic issue allowing universal cross site scripting when processing maliciously crafted web content.

This update for webkit2gtk3 fixes the following issues:

• Update to version 2.34.3 (bsc#1194019).
• CVE-2021-30887: Fixed logic issue allowing unexpectedly unenforced Content Security Policy when processing maliciously crafted web content.
• CVE-2021-30890: Fixed logic issue allowing universal cross site scripting when processing maliciously crafted web content.

A large number of security issues were discovered in the WebKitGTK Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution.