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Ubuntu Security Notice USN-7603-1
June 30, 2025

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

- 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 Composer.

Software Description:
- composer: Dependency Manager for PHP

Details:

Thomas Chauchefoin discovered that Composer did not correctly handle
certain arguments. An attacker could possibly use this issue to execute
arbitrary code. This issue only affected Ubuntu 16.04 LTS,
Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.
(CVE-2022-24828, CVE-2023-43655)

Ed Cradock discovered that Composer did not correctly handle the exclusion
of certain files. An attacker could possibly use this issue to execute
arbitrary code. This issue only affected Ubuntu 22.04 LTS. (CVE-2024-24821)

Martin Haunschmid discovered that Composer did not correctly handle git
branch names. An attacker could possibly use this issue to execute
arbitrary code. (CVE-2024-35241)

Maciej Piechota discovered that Composer did not correctly handle VCS
branch names. An attacker could possibly use this issue to execute
arbitrary code. (CVE-2024-35242)

Update instructions:

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

Ubuntu 24.04 LTS
  composer                        2.7.1-2ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 22.04 LTS
  composer                        2.2.6-2ubuntu4+esm1
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  composer                        1.10.1-1ubuntu0.1~esm2
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  composer                        1.6.3-1ubuntu0.1~esm2
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  composer                        1.0.0~beta2-1ubuntu0.1~esm2
                                  Available with Ubuntu Pro

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

References:
  https://ubuntu.com/security/notices/USN-7603-1
  CVE-2022-24828, CVE-2023-43655, CVE-2024-24821, CVE-2024-35241,
  CVE-2024-35242