XML Injection in Xerces Java affects Nokogiri

Summary

Nokogiri v1.13.4 updates the vendored xerces:xercesImpl from 2.12.0 to
2.12.2, which addresses CVE-2022-23437.
That CVE is scored as CVSS 6.5 “Medium” on the NVD record.

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

Mitigation

Upgrade to Nokogiri >= v1.13.4.

Impact

CVE-2022-23437 in xerces-J

• Severity: Medium
• Type: CWE-91 XML Injection (aka Blind XPath Injection)
• Description: There’s a vulnerability within the Apache Xerces Java
  (XercesJ) XML parser when handling specially crafted XML document payloads.
  This causes, the XercesJ XML parser to wait in an infinite loop, which may
  sometimes consume system resources for prolonged duration. This vulnerability
  is present within XercesJ version 2.12.1 and the previous versions.
• See also: https://github.com/advisories/GHSA-h65f-jvqw-m9fj