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Ubuntu Security Notice USN-7575-1
June 18, 2025

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

- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in MuJS.

Software Description:
- mujs: Lightweight Javascript interpreter

Details:

It was discovered that MuJS did not correctly handle try/finally
statements, which could lead to a buffer overflow. An attacker could
possibly use this issue to cause a denial of service or execute 
arbitrary code. (CVE-2021-45005)

Han Zheng discovered that MuJS did not correctly handle recursion, which
could lead to stack exhaustion. An attacker could possibly use this
issue to cause a denial of service. (CVE-2022-30974)

Han Zheng discovered that MuJS did not correctly handle certain memory
operations. An attacker could possibly use this issue to cause a denial
of service. (CVE-2022-30975)

Update instructions:

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

Ubuntu 22.04 LTS
  libmujs-dev                     1.1.3-3ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libmujs1                        1.1.3-3ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  mujs                            1.1.3-3ubuntu0.1~esm1
                                  Available with Ubuntu Pro

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

References:
  https://ubuntu.com/security/notices/USN-7575-1
  CVE-2021-45005, CVE-2022-30974, CVE-2022-30975