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Out-of-bounds Write Affecting xorg-server package, versions <21.1.11-r0

Severity

 Recommended
0.0
critical
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    0.4% (75th percentile)

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  • Snyk ID SNYK-ALPINE320-XORGSERVER-7015454
  • published 23 May 2024
  • disclosed 18 Jan 2024
Report a new vulnerability Found a mistake?

Introduced: 18 Jan 2024

CVE-2023-6816 Open this link in a new tab
CWE-787 Open this link in a new tab

How to fix?

Upgrade Alpine:3.20 xorg-server to version 21.1.11-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xorg-server package and not the xorg-server package as distributed by Alpine. See How to fix? for Alpine:3.20 relevant fixed versions and status.

A flaw was found in X.Org server. Both DeviceFocusEvent and the XIQueryPointer reply contain a bit for each logical button currently down. Buttons can be arbitrarily mapped to any value up to 255, but the X.Org Server was only allocating space for the device's particular number of buttons, leading to a heap overflow if a bigger value was used.

References

CVSS Scores

version 3.1
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NVD

Recommended
9.8 critical
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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SUSE

8.4 high
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Red Hat

9.8 critical