==========================================================================
Ubuntu Security Notice USN-7623-1
July 08, 2025

ghostscript vulnerabilities
==========================================================================

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

- Ubuntu 25.04
- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in Ghostscript.

Software Description:
- ghostscript: PostScript and PDF interpreter

Details:

It was discovered that OpenJPEG, vendored in Ghostscript did not correctly
handle large image files. If a user or system were tricked into opening a
specially crafted file, an attacker could possibly use this issue to cause
a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu
18.04 LTS. (CVE-2023-39327)  Thomas Rinsma discovered that Ghostscript did
not correctly handle printing certain variables. An attacker could possibly
use this issue to leak sensitive information. This issue only affected
Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2024-29508)  It was discovered
that Ghostscript did not correctly handle loading certain libraries. An
attacker could possibly use this issue to execute arbitrary code. This
issue only affected Ubuntu 16.04 LTS. (CVE-2024-33871)  It was discovered
that Ghostscript did not correctly handle certain memory operations. An
attacker could possibly use this issue to execute arbitrary code. This
issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2024-56826,
CVE-2024-56827, CVE-2025-27832, CVE-2025-27835, CVE-2025-27836)  Vasileios
Flengas discovered that Ghostscript did not correctly handle argument
sanitization. An attacker could possibly use this issue to leak sensitive
information. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS,
Ubuntu 24.04 LTS, Ubuntu 24.10 and Ubuntu 25.04. (CVE-2025-48708)

Update instructions:

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

Ubuntu 25.04
  ghostscript                     10.05.0dfsg1-0ubuntu1.1
  libgs10                         10.05.0dfsg1-0ubuntu1.1

Ubuntu 24.10
  ghostscript                     10.03.1~dfsg1-0ubuntu2.4
  libgs10                         10.03.1~dfsg1-0ubuntu2.4

Ubuntu 24.04 LTS
  ghostscript                     10.02.1~dfsg1-0ubuntu7.7
  libgs10                         10.02.1~dfsg1-0ubuntu7.7

Ubuntu 22.04 LTS
  ghostscript                     9.55.0~dfsg1-0ubuntu5.12
  ghostscript-x                   9.55.0~dfsg1-0ubuntu5.12
  libgs9                          9.55.0~dfsg1-0ubuntu5.12

Ubuntu 20.04 LTS
  libgs9                          9.50~dfsg-5ubuntu4.15+esm1
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  ghostscript                     9.26~dfsg+0-0ubuntu0.18.04.18+esm4
                                  Available with Ubuntu Pro
  ghostscript-x                   9.26~dfsg+0-0ubuntu0.18.04.18+esm4
                                  Available with Ubuntu Pro
  libgs-dev                       9.26~dfsg+0-0ubuntu0.18.04.18+esm4
                                  Available with Ubuntu Pro
  libgs9                          9.26~dfsg+0-0ubuntu0.18.04.18+esm4
                                  Available with Ubuntu Pro
  libgs9-common                   9.26~dfsg+0-0ubuntu0.18.04.18+esm4
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  ghostscript                     9.26~dfsg+0-0ubuntu0.16.04.14+esm9
                                  Available with Ubuntu Pro
  ghostscript-x                   9.26~dfsg+0-0ubuntu0.16.04.14+esm9
                                  Available with Ubuntu Pro
  libgs-dev                       9.26~dfsg+0-0ubuntu0.16.04.14+esm9
                                  Available with Ubuntu Pro
  libgs9                          9.26~dfsg+0-0ubuntu0.16.04.14+esm9
                                  Available with Ubuntu Pro
  libgs9-common                   9.26~dfsg+0-0ubuntu0.16.04.14+esm9
                                  Available with Ubuntu Pro

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

References:
  https://ubuntu.com/security/notices/USN-7623-1
  CVE-2023-39327, CVE-2024-29508, CVE-2024-56826, CVE-2024-56827,
  CVE-2025-27832, CVE-2025-27835, CVE-2025-27836, CVE-2025-48708

Package Information:
  https://launchpad.net/ubuntu/+source/ghostscript/10.05.0dfsg1-0ubuntu1.1
  https://launchpad.net/ubuntu/+source/ghostscript/10.03.1~dfsg1-0ubuntu2.4
  https://launchpad.net/ubuntu/+source/ghostscript/10.02.1~dfsg1-0ubuntu7.7
  https://launchpad.net/ubuntu/+source/ghostscript/9.55.0~dfsg1-0ubuntu5.12