ALAS2-2023-1982

Related Vulnerabilities: CVE-2023-0494  

A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding sessions. (CVE-2023-0494)

ALAS2-2023-1982


Amazon Linux 2 Security Advisory: ALAS-2023-1982
Advisory Release Date: 2023-03-02 22:35 Pacific
Advisory Updated Date: 2023-03-07 00:20 Pacific
Severity: Important

Issue Overview:

A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding sessions. (CVE-2023-0494)


Affected Packages:

xorg-x11-server


Issue Correction:
Run yum update xorg-x11-server to update your system.

New Packages:
aarch64:
    xorg-x11-server-common-1.20.4-22.amzn2.aarch64
    xorg-x11-server-Xorg-1.20.4-22.amzn2.aarch64
    xorg-x11-server-Xnest-1.20.4-22.amzn2.aarch64
    xorg-x11-server-Xdmx-1.20.4-22.amzn2.aarch64
    xorg-x11-server-Xvfb-1.20.4-22.amzn2.aarch64
    xorg-x11-server-Xephyr-1.20.4-22.amzn2.aarch64
    xorg-x11-server-Xwayland-1.20.4-22.amzn2.aarch64
    xorg-x11-server-devel-1.20.4-22.amzn2.aarch64
    xorg-x11-server-debuginfo-1.20.4-22.amzn2.aarch64

i686:
    xorg-x11-server-common-1.20.4-22.amzn2.i686
    xorg-x11-server-Xorg-1.20.4-22.amzn2.i686
    xorg-x11-server-Xnest-1.20.4-22.amzn2.i686
    xorg-x11-server-Xdmx-1.20.4-22.amzn2.i686
    xorg-x11-server-Xvfb-1.20.4-22.amzn2.i686
    xorg-x11-server-Xephyr-1.20.4-22.amzn2.i686
    xorg-x11-server-Xwayland-1.20.4-22.amzn2.i686
    xorg-x11-server-devel-1.20.4-22.amzn2.i686
    xorg-x11-server-debuginfo-1.20.4-22.amzn2.i686

noarch:
    xorg-x11-server-source-1.20.4-22.amzn2.noarch

src:
    xorg-x11-server-1.20.4-22.amzn2.src

x86_64:
    xorg-x11-server-common-1.20.4-22.amzn2.x86_64
    xorg-x11-server-Xorg-1.20.4-22.amzn2.x86_64
    xorg-x11-server-Xnest-1.20.4-22.amzn2.x86_64
    xorg-x11-server-Xdmx-1.20.4-22.amzn2.x86_64
    xorg-x11-server-Xvfb-1.20.4-22.amzn2.x86_64
    xorg-x11-server-Xephyr-1.20.4-22.amzn2.x86_64
    xorg-x11-server-Xwayland-1.20.4-22.amzn2.x86_64
    xorg-x11-server-devel-1.20.4-22.amzn2.x86_64
    xorg-x11-server-debuginfo-1.20.4-22.amzn2.x86_64