CVE-2022-50998

Description

Nokogiri before 1.13.9 (CRuby implementation using packaged libraries) bundles libxml2 v2.9.14, which is affected by CVE-2022-40304 (data corruption / double-free from an entity reference cycle when entity content is allocated from a dict) and CVE-2022-40303 (integer overflows when parsing with XML_PARSE_HUGE). Nokogiri 1.13.9 upgrades the packaged libxml2 to v2.10.3 to address these issues. Processing crafted XML input may lead to denial of service or memory corruption. (The advisory also references CVE-2022-2309, a NULL pointer dereference via iterwalk/canonicalize, which maintainers determined does not affect Nokogiri users.)

References

• https://github.com/sparklemotion/nokogiri/commit/644a89e080bced793295f61f18aac8cfad6bece2
• https://github.com/sparklemotion/nokogiri/commit/c846986356fc149915a74972bf198abc266bc2c0
• https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-2qc6-mcvw-92cw
• https://www.vulncheck.com/advisories/nokogiri-before-multiple-vulnerabilities-via-libxml2-2