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Heap-based Buffer Overflow Affecting tigervnc-server package, versions <0:1.13.1-2.el8_9.7.alma.1

Severity

 Recommended
high

Based on AlmaLinux security rating

    Threat Intelligence

    EPSS
    0.04% (12th percentile)

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  • Snyk ID SNYK-ALMALINUX8-TIGERVNCSERVER-6219832
  • published 31 Jan 2024
  • disclosed 30 Apr 2024
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Introduced: 31 Jan 2024

CVE-2024-21886 Open this link in a new tab
CWE-122 Open this link in a new tab

How to fix?

Upgrade AlmaLinux:8 tigervnc-server to version 0:1.13.1-2.el8_9.7.alma.1 or higher.
This issue was patched in ALSA-2024:0607.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tigervnc-server package and not the tigervnc-server package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

A heap buffer overflow flaw was found in the DisableDevice function in the X.Org server. This issue may lead to an application crash or, in some circumstances, remote code execution in SSH X11 forwarding environments.

References

CVSS Scores

version 3.1
Expand this section

Red Hat

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

SUSE

8.4 high