#VU32245 Heap-based buffer overflow in libgd - CVE-2016-5766
Vulnerability identifier: #VU32245
Vulnerability risk: High
CVSSv4.0: 6.1 [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: Network
Exploit availability: No
Vulnerable software:
libgd
Universal components / Libraries /
Libraries used by multiple products
Vendor: GD Software
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.
Mitigation
Update to version 2.2.3.
Vulnerable software versions
libgd: 2.2.0 - 2.2.2
External links
https://github.com/php/php-src/commit/7722455726bec8c53458a32851d2a87982cf0eac?w=1
https://lists.opensuse.org/opensuse-security-announce/2016-07/msg00004.html
https://lists.opensuse.org/opensuse-security-announce/2016-08/msg00025.html
https://lists.opensuse.org/opensuse-updates/2016-08/msg00003.html
https://php.net/ChangeLog-5.php
https://php.net/ChangeLog-7.php
https://rhn.redhat.com/errata/RHSA-2016-2598.html
https://rhn.redhat.com/errata/RHSA-2016-2750.html
https://www.debian.org/security/2016/dsa-3619
https://www.openwall.com/lists/oss-security/2016/06/23/4
https://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
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
