DescriptionThe Apache Xerces-C 3.0.0 to 3.2.3 XML parser contains a use-after-free error triggered during the scanning of external DTDs. This flaw has not been addressed in the maintained version of the library and has no current mitigation other than to disable DTD processing. This can be accomplished via the DOM using a standard parser feature, or via SAX using the XERCES_DISABLE_DTD environment variable.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2498-1, DSA-4814-1
Debian Bugs947431

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
xerces-c (PTS)buster, buster (security)3.2.2+debian-1+deb10u1fixed
sid, trixie, bookworm3.2.4+debian-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[jessie] - xerces-c <postponed> (slow upstream interest, proper fix likely to break ABI compatibility) (fix with memory leak, applied in DLA-2498-1 and DSA-4814-1)
Mitigation by setting the XERCES_DISABLE_DTD environment variable

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