[nokogiri] Denial of Service (DoS) in Nokogiri on JRuby

Summary

Nokogiri v1.13.4 updates the vendored org.cyberneko.html library to 1.9.22.noko2 which addresses CVE-2022-24839. That CVE is rated 7.5 (High Severity).

See GHSA-9849-p7jc-9rmv for more information.

Please note that this advisory only applies to the JRuby implementation of Nokogiri < 1.13.4.

Mitigation

Upgrade to Nokogiri >= 1.13.4.

Impact

CVE-2022-24839 in nekohtml

• Severity: High 7.5
• Type: CWE-400 Uncontrolled Resource Consumption
• Description: The fork of org.cyberneko.html used by Nokogiri (Rubygem) raises a java.lang.OutOfMemoryError exception when parsing ill-formed HTML markup.
• See also: GHSA-9849-p7jc-9rmv

References

• https://github.com/sparklemotion/nekohtml/security/advisories/GHSA-9849-p7jc-9rmv
• https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-gx8x-g87m-h5q6
• https://nvd.nist.gov/vuln/detail/CVE-2022-24839
• https://github.com/sparklemotion/nekohtml/commit/a800fce3b079def130ed42a408ff1d09f89e773d
• https://github.com/sparklemotion/nokogiri/releases/tag/v1.13.4
• https://groups.google.com/g/ruby-security-ann/c/vX7qSjsvWis/m/TJWN4oOKBwAJ?utm_medium=email&utm_source=footer
• https://github.com/advisories/GHSA-gx8x-g87m-h5q6