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BREW-mikutter-CVE-2022-50999 — Integer Overflow or Wraparound in libxml2 affects Nokogiri

Affected: Homebrew: mikutter

### Summary

Nokogiri v1.13.5 upgrades the packaged version of its dependency libxml2 from v2.9.13 to [v2.9.14](https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.9.14).

libxml2 v2.9.14 addresses [CVE-2022-29824](https://nvd.nist.gov/vuln/detail/CVE-2022-29824). This version also includes several security-related bug fixes for which CVEs were not created, including a potential double-free, potential memory leaks, and integer-overflow.

Please note that this advisory only applies to the CRuby implementation of Nokogiri `< 1.13.5`, and only if the _packaged_ libraries are being used. If you've overridden defaults at installation time to use _system_ libraries instead of packaged libraries, you should instead pay attention to your distro's `libxml2` and `libxslt` release announcements.

### Mitigation

Upgrade to Nokogiri `>= 1.13.5`.

Users who are unable to upgrade Nokogiri may also choose a more complicated mitigation: compile and link Nokogiri against external libraries libxml2 `>= 2.9.14` which will also address these same issues.

### Impact

#### libxml2 [CVE-2022-29824](https://nvd.nist.gov/vuln/detail/CVE-2022-29824)

- **CVSS3 score**: - Unspecified upstream - Nokogiri maintainers evaluate at 8.6 (High) ([CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H)). Note that this is different from the CVSS assessed by NVD. - **Type**: Denial of service, information disclosure - **Descr…

fkie_cve-2022-50999

Rejected reason: This CVE ID has been rejected as a duplicate.

GHSA-wf4q-gp79-7pv3

Nokogiri versions before 1.13.5 contain an integer overflow vulnerability in packaged libxml2 buffer handling functions that allows attackers to cause out-of-bounds memory writes. Attackers can exploit this by crafting multi-gigabyte XML files to trigger buffer overflows resulting in information disclosure, data modification, or denial of service.

Withdrawn: UBUNTU-CVE-2022-50999

Withdrawn by the publisher.

Affected: Ubuntu:Pro:14.04:LTS: ruby-nokogiri, Ubuntu:16.04:LTS: ruby-nokogiri, Ubuntu:18.04:LTS: ruby-nokogiri, Ubuntu:Pro:20.04:LTS: ruby-nokogiri, Ubuntu:Pro:22.04:LTS: ruby-nokogiri, Ubuntu:24.04:LTS: ruby-nokogiri, Ubuntu:26.04:LTS: ruby-nokogiri