A Ghostscript security update has been released for Ubuntu Linux 20.04 LTS, 22.04 LTS, 22.10, and 23.04.

[USN-6213-1] Ghostscript vulnerability

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Ubuntu Security Notice USN-6213-1
July 10, 2023

ghostscript vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 23.04
- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Ghostscript could be made to run programs if it opened a specially crafted
file.

Software Description:
- ghostscript: PostScript and PDF interpreter

Details:

It was discovered that Ghostscript incorrectly handled pipe devices. If a
user or automated system were tricked into opening a specially crafted PDF
file, a remote attacker could use this issue to execute arbitrary code.

Update instructions:

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

Ubuntu 23.04:
ghostscript 10.0.0~dfsg1-0ubuntu1.2

Ubuntu 22.10:
ghostscript 9.56.1~dfsg1-0ubuntu3.2

Ubuntu 22.04 LTS:
ghostscript 9.55.0~dfsg1-0ubuntu5.3

Ubuntu 20.04 LTS:
ghostscript 9.50~dfsg-5ubuntu4.8

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-6213-1
CVE-2023-36664

Package Information:
https://launchpad.net/ubuntu/+source/ghostscript/10.0.0~dfsg1-0ubuntu1.2
https://launchpad.net/ubuntu/+source/ghostscript/9.56.1~dfsg1-0ubuntu3.2
https://launchpad.net/ubuntu/+source/ghostscript/9.55.0~dfsg1-0ubuntu5.3
https://launchpad.net/ubuntu/+source/ghostscript/9.50~dfsg-5ubuntu4.8