CVE-2017-6362

Publication date 1 September 2017

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Double free vulnerability in the gdImagePngPtr function in libgd2 before 2.2.5 allows remote attackers to cause a denial of service via vectors related to a palette with no colors.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libgd2	17.04 zesty	Fixed 2.2.4-2ubuntu0.3
	16.04 LTS xenial	Fixed 2.1.1-4ubuntu0.16.04.8
	14.04 LTS trusty	Fixed 2.1.0-3ubuntu0.8
php5	17.04 zesty	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not affected
php7.0	17.04 zesty	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not in release
php7.1	17.04 zesty	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release

Notes

mdeslaur

php uses the system libgd2

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H