QID 356618

Date Published: 2023-11-09

QID 356618: Amazon Linux Security Advisory for xorg-x11-server : ALAS2023-2023-404

A out-of-bounds write flaw was found in the xorg-x11-server.
This issue occurs due to an incorrect calculation of a buffer offset when copying data stored in the heap in the xichangedeviceproperty function in xi/xiproperty.c and in rrchangeoutputproperty function in randr/rrproperty.c, allowing for possible escalation of privileges or denial of service. (
( CVE-2023-5367) a use-after-free flaw was found in the xorg-x11-server.
An x server crash may occur in a very specific and legacy configuration (a multi-screen setup with multiple protocol screens, also known as zaphod mode) if the pointer is warped from within a window on one screen to the root window of the other screen and if the original window is destroyed followed by another window being destroyed. (
( CVE-2023-5380)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as High - 7.8 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2023-2023-404 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 356618

    CVE-2023-5380 | CVE-2023-5367 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2023-2023-404 amazon linux 2023 URL Logo alas.aws.amazon.com/AL2023/ALAS-2023-404.html
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