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, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium
Debian Bugs947431

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
xerces-c (PTS)stretch3.1.4+debian-2+deb9u1vulnerable
stretch (security)3.1.4+debian-2+deb9u2vulnerable
buster, buster (security)3.2.2+debian-1+deb10u1fixed
bullseye, sid3.2.3+debian-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[stretch] - xerces-c <postponed> (Minor issue, revisit when fixed upstream)
[jessie] - xerces-c <postponed> (slow upstream interest, proper fix likely to break ABI compatibility) (fix with memory leak)
Mitigation by setting the XERCES_DISABLE_DTD environment variable

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