QID 356994

Date Published: 2024-01-17

QID 356994: Amazon Linux Security Advisory for xorg-x11-server : AL2012-2023-478

Package updates are available for Amazon Linux that fix the following vulnerabilities:
CVE-2023-5574:
A use-after-free flaw was found in xorg-x11-server-Xvfb. This issue occurs in Xvfb with a very specific and legacy configuration (a multi-screen setup with multiple protocol screens, also known as Zaphod mode). If the pointer is warped from a screen 1 to a screen 0, a use-after-free issue may be triggered during shutdown or reset of the Xvfb server, allowing for possible escalation of privileges or denial of service.

Successful exploitation of this vulnerability could lead to a security breach or could affect integrity, availability, and confidentiality.

CVSS V3 rated as High - 7 severity.

CVSS V2 rated as Medium - 5.4 severity.

Solution

Administrators are advised to apply the appropriate software updates.

Vendor References

CVEs related to QID 356994

CVE-2023-5574 |

Software Advisories

Advisory ID	Software	Component	Link
AL2012-2023-478	Amazon Linux Bare Metal		docs.aws.amazon.com/AWSEC2/latest/UserGuide/install-updates.html

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