CVE-2018-5711

Publication date 16 January 2018

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

gd_gif_in.c in the GD Graphics Library (aka libgd), as used in PHP before 5.6.33, 7.0.x before 7.0.27, 7.1.x before 7.1.13, and 7.2.x before 7.2.1, has an integer signedness error that leads to an infinite loop via a crafted GIF file, as demonstrated by a call to the imagecreatefromgif or imagecreatefromstring PHP function. This is related to GetCode_ and gdImageCreateFromGifCtx.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
php5	21.04 hirsute	Not in release
	20.10 groovy	Not in release
	20.04 LTS focal	Not in release
	19.10 eoan	Not in release
	19.04 disco	Not in release
	18.10 cosmic	Not in release
	18.04 LTS bionic	Not in release
	17.10 artful	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not affected
libgd2	21.04 hirsute	Fixed 2.2.5-4ubuntu1
	20.10 groovy	Fixed 2.2.5-4ubuntu1
	20.04 LTS focal	Fixed 2.2.5-4ubuntu1
	19.10 eoan	Fixed 2.2.5-4ubuntu1
	19.04 disco	Fixed 2.2.5-4ubuntu1
	18.10 cosmic	Fixed 2.2.5-4ubuntu1
	18.04 LTS bionic	Fixed 2.2.5-4ubuntu0.2
	17.10 artful	Ignored end of life
	16.04 LTS xenial	Fixed 2.1.1-4ubuntu0.16.04.10
	14.04 LTS trusty	Fixed 2.1.0-3ubuntu0.10
php7.0	21.04 hirsute	Not in release
	20.10 groovy	Not in release
	20.04 LTS focal	Not in release
	19.10 eoan	Not in release
	19.04 disco	Not in release
	18.10 cosmic	Not in release
	18.04 LTS bionic	Not in release
	17.10 artful	Not in release
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not in release
php7.1	21.04 hirsute	Not in release
	20.10 groovy	Not in release
	20.04 LTS focal	Not in release
	19.10 eoan	Not in release
	19.04 disco	Not in release
	18.10 cosmic	Not in release
	18.04 LTS bionic	Not in release
	17.10 artful	Not affected
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release

Notes

mdeslaur

php uses the system libgd2

Patch details

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

Package	Patch details
libgd2	Upstream: a11f474

Severity score breakdown

Parameter	Value
Base score	5.5 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-3755-1
GD vulnerabilities
27 August 2018