A libXpm security update has been released for Ubuntu Linux 20.04 LTS, 22.04 LTS, and 23.04.

[USN-6408-1] libXpm vulnerabilities

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Ubuntu Security Notice USN-6408-1
October 03, 2023

libxpm vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 23.04
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in libXpm.

Software Description:
- libxpm: X11 pixmap library

Details:

Yair Mizrahi discovered that libXpm incorrectly handled certain malformed
XPM image files. If a user were tricked into opening a specially crafted
XPM image file, a remote attacker could possibly use this issue to consume
memory, leading to a denial of service. (CVE-2023-43786)

Yair Mizrahi discovered that libXpm incorrectly handled certain malformed
XPM image files. If a user were tricked into opening a specially crafted
XPM image file, a remote attacker could use this issue to cause libXpm to
crash, leading to a denial of service, or possibly execute arbitrary code.
(CVE-2023-43787)

Alan Coopersmith discovered that libXpm incorrectly handled certain
malformed XPM image files. If a user were tricked into opening a specially
crafted XPM image file, a remote attacker could possibly use this issue to
cause libXpm to crash, leading to a denial of service. (CVE-2023-43788,
CVE-2023-43789)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 23.04:
libxpm4 1:3.5.12-1.1ubuntu0.1

Ubuntu 22.04 LTS:
libxpm4 1:3.5.12-1ubuntu0.22.04.2

Ubuntu 20.04 LTS:
libxpm4 1:3.5.12-1ubuntu0.20.04.2

After a standard system update you need to reboot your computer to make all
the necessary changes.

References:
https://ubuntu.com/security/notices/USN-6408-1
CVE-2023-43786, CVE-2023-43787, CVE-2023-43788, CVE-2023-43789

Package Information:
https://launchpad.net/ubuntu/+source/libxpm/1:3.5.12-1.1ubuntu0.1
https://launchpad.net/ubuntu/+source/libxpm/1:3.5.12-1ubuntu0.22.04.2
https://launchpad.net/ubuntu/+source/libxpm/1:3.5.12-1ubuntu0.20.04.2