<p>Upgrade <code>Alpine:3.20</code> <code>xwayland</code> to version 23.2.4-r0 or higher.</p>

Out-of-bounds Write Affecting xwayland package, versions <23.2.4-r0

Threat Intelligence

0.4% (75^th percentile)

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Snyk ID SNYK-ALPINE320-XWAYLAND-7015423
published 23 May 2024
disclosed 18 Jan 2024

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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 xwayland to version 23.2.4-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xwayland package and not the xwayland 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

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

Out-of-bounds Write Affecting xwayland package, versions <23.2.4-r0

Severity

Snyk's Security Team recommends NVD's CVSS assessment