CVE-2016-8670

Publication date 14 October 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Integer signedness error in the dynamicGetbuf function in gd_io_dp.c in the GD Graphics Library (aka libgd) through 2.2.3, as used in PHP before 5.6.28 and 7.x before 7.0.13, allows remote attackers to cause a denial of service (stack-based buffer overflow) or possibly have unspecified other impact via a crafted imagecreatefromstring call.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
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
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	Fixed 2.0.36~rc1~dfsg-6ubuntu2.3
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 0019-Patch-for-security-bug-https-bugs.php.net-bug.php-id.patch in Debian jessie update.

Patch details

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

Package	Patch details
libgd2	Upstream: 5311087

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

References

Related Ubuntu Security Notices (USN)

USN-3117-1
GD library vulnerabilities
1 November 2016