CVE-2011-2691

Publication date 17 July 2011

Last updated 25 August 2025

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

6.5 · Medium

Score breakdown

Description

The png_err function in pngerror.c in libpng 1.0.x before 1.0.55, 1.2.x before 1.2.45, 1.4.x before 1.4.8, and 1.5.x before 1.5.4 makes a function call using a NULL pointer argument instead of an empty-string argument, which allows remote attackers to cause a denial of service (application crash) via a crafted PNG image.

Read the notes from the security team

Status

Package Ubuntu Release Status
chromium-browser 12.04 LTS precise
Not affected
11.10 oneiric
Fixed 14.0.835.202~r103287-0ubuntu1
11.04 natty
Fixed 14.0.835.202~r103287-0ubuntu0.11.04.1
10.10 maverick
Fixed 14.0.835.202~r103287-0ubuntu0.10.10.1
10.04 LTS lucid
Fixed 14.0.835.202~r103287-0ubuntu0.10.04.2
8.04 LTS hardy Not in release
firefox 12.04 LTS precise
Fixed 8.0~b4+build1-0ubuntu2
11.10 oneiric
Fixed 8.0+build1-0ubuntu0.11.10.1
11.04 natty
Fixed 8.0+build1-0ubuntu0.11.04.1
10.10 maverick Ignored end of life
10.04 LTS lucid
Fixed 10.0+build1-0ubuntu0.10.04.2
8.04 LTS hardy Ignored end of life
libpng 12.04 LTS precise
Not affected
11.10 oneiric
Not affected
11.04 natty
Not affected
10.10 maverick
Not affected
10.04 LTS lucid
Not affected
8.04 LTS hardy
Not affected

Notes

mdeslaur

On Ubuntu, the affected code isn't compiled in libpng.

jdstrand

firefox 3.6.23 has 1.2.35 and 7.0.1 has 1.4.7

micahg

firefox 8 will have 1.4.8

Patch details

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

Package Patch details
libpng

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

Other references