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Use After Free Affecting xorg-x11-server-devel package, versions <0:1.17.4-18.50.amzn1

Severity

 Recommended
0.0
high
0
10

Based on Amazon Linux security rating

    Threat Intelligence

    EPSS
    0.25% (65th percentile)

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  • Snyk ID SNYK-AMZN201803-XORGX11SERVERDEVEL-3330022
  • published 23 Feb 2023
  • 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 Amazon-Linux:2018.03 xorg-x11-server-devel to version 0:1.17.4-18.50.amzn1 or higher.
This issue was patched in ALAS-2023-1689.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xorg-x11-server-devel package and not the xorg-x11-server-devel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 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
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NVD

7.8 high
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SUSE

7.8 high
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Red Hat

7.8 high