RHSA-2021:4381 — Security Advisory

An update for GNOME is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

GNOME is the default desktop environment of Red Hat Enterprise 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 Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.