<p>Upgrade <code>Alpine:3.20</code> <code>xorg-server</code> to version 21.1.5-r0 or higher.</p>

Use After Free Affecting xorg-server package, versions <21.1.5-r0

Threat Intelligence

0.51% (78^th percentile)

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Snyk ID SNYK-ALPINE320-XORGSERVER-7015456
published 23 May 2024
disclosed 14 Dec 2022

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Introduced: 14 Dec 2022

CVE-2022-4283 Open this link in a new tab CWE-416 Open this link in a new tab

How to fix?

Upgrade Alpine:3.20 xorg-server to version 21.1.5-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 vulnerability was found in X.Org. This security flaw occurs because the XkbCopyNames function left a dangling pointer to freed memory, resulting in out-of-bounds memory access on subsequent XkbGetKbdByName requests.. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions.

References

CVSS Scores

version 3.1

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

Use After Free Affecting xorg-server package, versions <21.1.5-r0

Severity

Snyk's Security Team recommends NVD's CVSS assessment