CVE-2016-7568

Publication date 28 September 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Integer overflow in the gdImageWebpCtx function in gd_webp.c in the GD Graphics Library (aka libgd) through 2.2.3, as used in PHP through 7.0.11, allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via crafted imagewebp and imagedestroy calls.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libgd2	16.10 yakkety	Fixed 2.2.1-1ubuntu3.2
	16.04 LTS xenial	Fixed 2.1.1-4ubuntu0.16.04.5
	14.04 LTS trusty	Fixed 2.1.0-3ubuntu0.5
	12.04 LTS precise	Not affected
php5	16.10 yakkety	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not affected
	12.04 LTS precise	Not affected
php7.0	16.10 yakkety	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release

Notes

mdeslaur

php uses the system libgd2 code in gd 2.1.x is different, can use the php5 patch

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
libgd2	Upstream: 40bec0f
php5	Upstream: http://git.php.net/?p=php-src.git;a=commit;h=46df0642618eabc5b5b7df490d1ae23bda00a745
php7.0	Upstream: c18263e

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVE-2016-7568

Cvss 3 Severity Score

Description

Status

Notes

mdeslaur

Patch details

Severity score breakdown

References

Related Ubuntu Security Notices (USN)

Other references

Access our resources on patching vulnerabilities