high
8.8
CWE
190 119
Advisory Published
Updated

CVE-2016-5766: Integer Overflow

First published: Sun Aug 07 2016(Updated: )

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, allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via crafted chunk dimensions in an image.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
PHP<7.0.8
7.0.8
Red Hat OpenShift=2.0
FreeBSD Kernel=8.3
Red Hat Enterprise Linux=6.0
FreeBSD Kernel=8.0
Red Hat Enterprise Linux=5
libgd=2.2.2
PHP<=5.5.36
PHP=5.6.0-alpha1
PHP=5.6.0-alpha2
PHP=5.6.0-alpha3
PHP=5.6.0-alpha4
PHP=5.6.0-alpha5
PHP=5.6.0-beta1
PHP=5.6.0-beta2
PHP=5.6.0-beta3
PHP=5.6.0-beta4
PHP=5.6.1
PHP=5.6.2
PHP=5.6.3
PHP=5.6.4
PHP=5.6.5
PHP=5.6.6
PHP=5.6.7
PHP=5.6.8
PHP=5.6.9
PHP=5.6.10
PHP=5.6.11
PHP=5.6.12
PHP=5.6.13
PHP=5.6.14
PHP=5.6.15
PHP=5.6.16
PHP=5.6.17
PHP=5.6.18
PHP=5.6.19
PHP=5.6.20
PHP=5.6.21
PHP=5.6.22
PHP=7.0.0
PHP=7.0.1
PHP=7.0.2
PHP=7.0.3
PHP=7.0.4
PHP=7.0.5
PHP=7.0.6
PHP=7.0.7
FreeBSD Kernel=10.0
Fedora=23
Debian=8.0
FreeBSD Kernel=10.1
Fedora=24
FreeBSD Kernel=8.4
FreeBSD Kernel=9.2
FreeBSD Kernel=8.2
FreeBSD Kernel=8.1
FreeBSD Kernel=9.0
FreeBSD Kernel=10.2
Fedora=22
FreeBSD Kernel=9.3
Red Hat Enterprise Linux=7.0
FreeBSD Kernel=10.3
FreeBSD Kernel=9.1

Remedy

http://github.com/php/php-src/commit/7722455726bec8c53458a32851d2a87982cf0eac?w=1

Remedy

https://bugs.php.net/bug.php?id=72339

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2016-5766?

    CVE-2016-5766 is classified as a high severity vulnerability due to the potential for remote denial of service attacks and application crashes.

  • How do I fix CVE-2016-5766?

    To fix CVE-2016-5766, update the GD Graphics Library to version 2.2.3 or later and ensure PHP is upgraded to 5.5.37, 5.6.23, or 7.0.8 or higher.

  • What systems are affected by CVE-2016-5766?

    CVE-2016-5766 affects versions of the GD Graphics Library prior to 2.2.3 and vulnerable versions of PHP before 5.5.37, 5.6.x before 5.6.23, and 7.x before 7.0.8.

  • What type of attack can CVE-2016-5766 facilitate?

    CVE-2016-5766 can facilitate remote attacks that result in a denial of service through heap-based buffer overflow vulnerabilities.

  • Is CVE-2016-5766 present in all versions of PHP?

    No, CVE-2016-5766 is not present in all versions of PHP; it affects specific versions prior to their respective security patches.

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