RubySec

Providing security resources for the Ruby community

CVE-2021-3518 (nokogiri): Nokogiri Implements libxml2 version vulnerable to use-after-free

ADVISORIES

GEM

nokogiri

SEVERITY

CVSS v3.x: 8.8 (High)

PATCHED VERSIONS

  • >= 1.11.4

DESCRIPTION

There's a flaw in libxml2 in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by an application linked with libxml2 could trigger a use-after-free. The greatest impact from this flaw is to confidentiality, integrity, and availability.

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