ADVISORIES

• CVE-2021-3537 (NVD)
• GHSA-286v-pcf5-25rc
• Vendor Advisory

GEM

nokogiri

SEVERITY

CVSS v3.x: 5.9 (Medium)

CVSS v2.0: 4.3 (Medium)

PATCHED VERSIONS

• >= 1.11.4

DESCRIPTION

A vulnerability found in libxml2 in versions before 2.9.11 shows that it did not propagate errors while parsing XML mixed content, causing a NULL dereference. If an untrusted XML document was parsed in recovery mode and post-validated, the flaw could be used to crash the application. The highest threat from this vulnerability is to system availability.

RELATED

• https://nvd.nist.gov/vuln/detail/CVE-2021-3537
• https://nokogiri.org/CHANGELOG.html#1114-2021-05-14
• https://nokogiri.org/CHANGELOG.html#security_8
• https://bugzilla.redhat.com/show_bug.cgi?id=1956522
• https://lists.debian.org/debian-lts-announce/2021/05/msg00008.html
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BZOMV5J4PMZAORVT64BKLV6YIZAFDGX6/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QVM4UJ3376I6ZVOYMHBNX4GY3NIV52WV/
• https://security.gentoo.org/glsa/202107-05
• https://security.netapp.com/advisory/ntap-20210625-0002/
• https://www.oracle.com/security-alerts/cpuapr2022.html
• https://www.oracle.com/security-alerts/cpuoct2021.html
• https://www.oracle.com/security-alerts/cpujul2022.html
• https://github.com/sparklemotion/nokogiri/blob/2edbbef95f1dc12c1ddc5ebda71b9159026245fe/CHANGELOG.md?plain=1#L722
• https://github.com/advisories/GHSA-286v-pcf5-25rc