Heap-based buffer overflow in libgd - CVE-2016-5767

Vulnerability details

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 gdImageCreate function in gd.c in the GD Graphics Library (aka libgd) before 2.0.34RC1, 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 a crafted image dimensions. 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.

Affected software

How to mitigate CVE-2016-5767

External References

• http://github.com/php/php-src/commit/c395c6e5d7e8df37a21265ff76e48fe75ceb5ae6?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.openwall.com/lists/oss-security/2016/06/23/4
• http://www.securityfocus.com/bid/91395
• https://bugs.php.net/bug.php?id=72446
• https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731

Related Security Bulletins

• Heap-based buffer overflow in libgd
• Heap-based buffer overflow in gd (Alpine package)
• Fedora 24 update for gd