CVE-2019-15133

Publication date 17 August 2019

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

In GIFLIB before 2019-02-16, a malformed GIF file triggers a divide-by-zero exception in the decoder function DGifSlurp in dgif_lib.c if the height field of the ImageSize data structure is equal to zero.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
giflib	19.04 disco	Fixed 5.1.4-3ubuntu0.1
	18.04 LTS bionic	Fixed 5.1.4-2ubuntu0.1
	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/799eb6a3af8a3dd81e2429bf11a72a57e541f908/

Severity score breakdown

Parameter	Value
Base score	6.5 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-4107-1
GIFLIB vulnerabilities
20 August 2019