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Heap-based Buffer Overflow Affecting xorg-x11-server-source package, versions <0:1.20.11-24.el9

Severity

 Recommended
medium

Based on AlmaLinux security rating

    Threat Intelligence

    EPSS
    0.04% (12th percentile)

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  • Snyk ID SNYK-ALMALINUX9-XORGX11SERVERSOURCE-6811172
  • published 7 May 2024
  • disclosed 30 Apr 2024
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Introduced: 30 Apr 2024

CVE-2024-21885 Open this link in a new tab
CWE-122 Open this link in a new tab

How to fix?

Upgrade AlmaLinux:9 xorg-x11-server-source to version 0:1.20.11-24.el9 or higher.
This issue was patched in ALSA-2024:2169.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xorg-x11-server-source package and not the xorg-x11-server-source package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

A flaw was found in X.Org server. In the XISendDeviceHierarchyEvent function, it is possible to exceed the allocated array length when certain new device IDs are added to the xXIHierarchyInfo struct. This can trigger a heap buffer overflow condition, which may lead to an application crash or remote code execution in SSH X11 forwarding environments.

References

CVSS Scores

version 3.1
Expand this section

SUSE

8.4 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
Expand this section

Red Hat

7.8 high