CVE-2017-9049

NameCVE-2017-9049
Descriptionlibxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictComputeFastKey function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for libxml2 Bug 759398.
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)
ReferencesDLA-1008-1, DSA-3952-1
NVD severitymedium
Debian Bugs863019

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libxml2 (PTS)stretch (security), stretch2.9.4+dfsg1-2.2+deb9u2fixed
buster2.9.4+dfsg1-7fixed
bullseye, sid2.9.10+dfsg-5fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libxml2sourcewheezy2.8.0+dfsg1-7+wheezy8DLA-1008-1
libxml2sourcejessie2.9.1+dfsg1-5+deb8u5DSA-3952-1
libxml2sourcestretch2.9.4+dfsg1-2.2+deb9u1DSA-3952-1
libxml2source(unstable)2.9.4+dfsg1-3.1863019

Notes

https://bugzilla.gnome.org/show_bug.cgi?id=781205 (not public)
http://www.openwall.com/lists/oss-security/2017/05/15/1
Fixed by: https://git.gnome.org/browse/libxml2/commit/?id=e26630548e7d138d2c560844c43820b6767251e3

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