Heap-based buffer overflow in libgd - CVE-2016-5766
Published: August 7, 2016 / Updated: July 28, 2020
Vulnerability identifier: #VU32245
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2016-5766
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: GD Software
Affected software:
libgd
libgd
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in Integer overflow in the _gd2GetHeader function in gd_gd2.c in the GD Graphics Library (aka libgd) before 2.2.3, as used in PHP before 5.5.37, 5.6.x before 5.6.23, and 7.x before 7.0.8,. A remote attacker can use crafted chunk dimensions in an image. to trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2016-5766
Update to version 2.2.3.
Sources
- http://github.com/php/php-src/commit/7722455726bec8c53458a32851d2a87982cf0eac?w=1
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00025.html
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00003.html
- http://php.net/ChangeLog-5.php
- http://php.net/ChangeLog-7.php
- http://rhn.redhat.com/errata/RHSA-2016-2598.html
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://www.debian.org/security/2016/dsa-3619
- http://www.openwall.com/lists/oss-security/2016/06/23/4
- http://www.ubuntu.com/usn/USN-3030-1
- https://bugs.php.net/bug.php?id=72339
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
- https://libgd.github.io/release-2.2.3.html
- https://security.gentoo.org/glsa/201612-09