CVE-2024-34394: libxmljs2 vulnerable to type confusion when parsing specially crafted XML

May 2, 2024 (updated November 25, 2024)

libxmljs2 is vulnerable to a type confusion vulnerability when parsing a specially crafted XML while invoking the namespaces() function (which invokes XmlNode::get_local_namespaces()) on a grand-child of a node that refers to an entity. This vulnerability can lead to denial of service and remote code execution.

References

github.com/advisories/GHSA-78h3-pg4x-j8cv
github.com/marudor/libxmljs2
github.com/marudor/libxmljs2/issues/205
nvd.nist.gov/vuln/detail/CVE-2024-34394
research.jfrog.com/vulnerabilities/libxmljs2-namespaces-type-confusion-rce-jfsa-2024-001034098

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