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Test ID:1.3.6.1.4.1.25623.1.0.704920
Category:Debian Local Security Checks
Title:Debian: Security Advisory for libx11 (DSA-4920-1)
Summary:The remote host is missing an update for the 'libx11'; package(s) announced via the DSA-4920-1 advisory.
Description:Summary:
The remote host is missing an update for the 'libx11'
package(s) announced via the DSA-4920-1 advisory.

Vulnerability Insight:
Roman Fiedler reported that missing length validation in various
functions provided by libx11, the X11 client-side library, allow
to inject X11 protocol commands on X clients, leading to
authentication bypass, denial of service or potentially the
execution of arbitrary code.

Affected Software/OS:
'libx11' package(s) on Debian Linux.

Solution:
For the stable distribution (buster), this problem has been fixed in
version 2:1.6.7-1+deb10u2.

We recommend that you upgrade your libx11 packages.

CVSS Score:
7.5

CVSS Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2021-31535
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