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GHSA-242x-7cm6-4w8j

Nokogiri affected by libxslt Use of Uninitialized Resource/Use After Free vulnerability

Source: GitHub Advisory Database (reviewed) High CVE-2019-18197

Packages

EcosystemPackageAffectedFixed in
RubyGems nokogiri < 1.10.5 1.10.5

Details

As written in the advisory (Markdown source, shown as plain text).

In xsltCopyText in transform.c in libxslt 1.1.33, a pointer variable isn't reset under certain circumstances. If the relevant memory area happened to be freed and reused in a certain way, a bounds check could fail and memory outside a buffer could be written to, or uninitialized data could be disclosed. Nokogiri prior to version 1.10.5 contains a vulnerable version of libxslt. Nokogiri version 1.10.5 upgrades the dependency to libxslt 1.1.34, which contains a patch for this issue.

References

External links from the advisory. They lead to third-party sites.