CVE-2018-11490

Publication date 26 May 2018

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

The DGifDecompressLine function in dgif_lib.c in GIFLIB (possibly version 3.0.x), as later shipped in cgif.c in sam2p 0.49.4, has a heap-based buffer overflow because a certain "Private->RunningCode - 2" array index is not checked. This will lead to a denial of service or possibly unspecified other impact.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
giflib	19.04 disco	Fixed 5.1.4-3ubuntu0.1
	18.10 cosmic	Ignored end of life
	18.04 LTS bionic	Fixed 5.1.4-2ubuntu0.1
	17.10 artful	Ignored end of life
	16.04 LTS xenial	Fixed 5.1.4-0.3~16.04.1
	14.04 LTS trusty	Not in release

Patch details

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

Package	Patch details
giflib	Upstream: https://sourceforge.net/p/giflib/code/ci/08438a5098f3bb1de23a29334af55eba663f75bd/

Severity score breakdown

CVSS version: CVSS v3.0

Base score 8.8 · High

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality impact	High
Integrity impact	High
Availability impact	High

Scores

Parameter	Value
Base score	8.8 · High
Exploitability score	-
Impact score	-

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-4107-1
GIFLIB vulnerabilities
20 August 2019

Other references

https://www.cve.org/CVERecord?id=CVE-2018-11490