DescriptionUse-after-free vulnerability in the xmlDictComputeFastKey function in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allows remote attackers to cause a denial of service via a crafted XML document.
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 (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libxml2 (PTS)jessie (security), jessie2.9.1+dfsg1-5+deb8u6fixed
stretch (security), stretch2.9.4+dfsg1-2.2+deb9u2fixed
buster, sid2.9.4+dfsg1-7fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libxml2sourcewheezy(not affected)


[wheezy] - libxml2 <not-affected> (Vulnerable code not present)
Fixed by: (v2.9.4)
Introduced by: (v2.9.2)
Regression applies to Jessie, since fix backported as 0007-Fix-a-parsing-bug-on-non-ascii-element-and-CR-LF-usa.patch

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