CVE-2016-5766 Integer overflow in n/a

High 8.8 Published 7 Aug 2016 Updated 6 Aug 2024

Remote attackers can cause a denial of service via crafted image dimensions in the GD Graphics Library, affecting applications like PHP.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2016-5766?

CVE-2016-5766 is a high-severity vulnerability in Debian Debian Linux, published on 7 Aug 2016. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

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.

Weakness: CWE-190

Which versions are affected by CVE-2016-5766?

It affects 6 products.

Linux distribution packages (15)

`gd` Red Hat:enterprise_linux:7::client	All versions	`0:2.0.35-27.el7_9`
`gd-debuginfo` Red Hat:enterprise_linux:7::client	All versions	`0:2.0.35-27.el7_9`
`gd-devel` Red Hat:enterprise_linux:7::client	All versions	`0:2.0.35-27.el7_9`
`gd-progs` Red Hat:enterprise_linux:7::client	All versions	`0:2.0.35-27.el7_9`
`gd-debuginfo` Red Hat:enterprise_linux:7::computenode	All versions	`0:2.0.35-27.el7_9`
`gd-devel` Red Hat:enterprise_linux:7::computenode	All versions	`0:2.0.35-27.el7_9`
`gd-progs` Red Hat:enterprise_linux:7::computenode	All versions	`0:2.0.35-27.el7_9`
`gd` Red Hat:enterprise_linux:7::server	All versions	`0:2.0.35-27.el7_9`
`gd-debuginfo` Red Hat:enterprise_linux:7::server	All versions	`0:2.0.35-27.el7_9`
`gd-devel` Red Hat:enterprise_linux:7::server	All versions	`0:2.0.35-27.el7_9`
`gd-progs` Red Hat:enterprise_linux:7::server	All versions	`0:2.0.35-27.el7_9`
`gd` Red Hat:enterprise_linux:7::workstation	All versions	`0:2.0.35-27.el7_9`
`gd-debuginfo` Red Hat:enterprise_linux:7::workstation	All versions	`0:2.0.35-27.el7_9`
`gd-devel` Red Hat:enterprise_linux:7::workstation	All versions	`0:2.0.35-27.el7_9`
`gd-progs` Red Hat:enterprise_linux:7::workstation	All versions	`0:2.0.35-27.el7_9`

Products include Debian Debian Linux, Fedoraproject Fedora, Freebsd Freebsd, Libgd Libgd, Redhat Enterprise Linux, Redhat Openshift.

How do I fix CVE-2016-5766?

Upgrade to a fixed version.

Is CVE-2016-5766 being exploited?

There is no known exploitation of CVE-2016-5766 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as ALPINE-CVE-2016-5766, DEBIAN-CVE-2016-5766, DLA-534-1, GHSA-54vf-4pr8-g7c8, RHSA-2020:5443, UBUNTU-CVE-2016-5766.