DescriptionInteger signedness error in the dynamicGetbuf function in gd_io_dp.c in the GD Graphics Library (aka libgd) through 2.2.3, as used in PHP before 5.6.28 and 7.x before 7.0.13, allows remote attackers to cause a denial of service (stack-based buffer overflow) or possibly have unspecified other impact via a crafted imagecreatefromstring call.
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-665-1, DSA-3693-1
NVD severityhigh (attack range: remote)
Debian Bugs840805

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libgd2 (PTS)wheezy2.0.36~rc1~dfsg-6.1+deb7u2vulnerable
wheezy (security)2.0.36~rc1~dfsg-6.1+deb7u11fixed
jessie (security), jessie2.1.0-5+deb8u11fixed
stretch (security), stretch2.2.4-2+deb9u2fixed
buster, sid2.2.5-4fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


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