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CVE-2011-2692

Published: 17 July 2011

The png_handle_sCAL function in pngrutil.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 does not properly handle invalid sCAL chunks, which allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact via a crafted PNG image that triggers the reading of uninitialized memory.

Notes

AuthorNote
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

Priority

Low

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package Release Status
chromium-browser
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid
Released (14.0.835.202~r103287-0ubuntu0.10.04.2)
maverick
Released (14.0.835.202~r103287-0ubuntu0.10.10.1)
natty
Released (14.0.835.202~r103287-0ubuntu0.11.04.1)
oneiric
Released (14.0.835.202~r103287-0ubuntu1)
precise Not vulnerable
(14.0.835.202~r103287-0ubuntu1)
upstream Needs triage

firefox
Launchpad, Ubuntu, Debian
hardy Ignored
(end of life)
lucid
Released (10.0+build1-0ubuntu0.10.04.2)
maverick Ignored
(end of life)
natty
Released (8.0+build1-0ubuntu0.11.04.1)
oneiric
Released (8.0+build1-0ubuntu0.11.10.1)
precise
Released (8.0~b4+build1-0ubuntu2)
upstream Needs triage

libpng
Launchpad, Ubuntu, Debian
hardy
Released (1.2.15~beta5-3ubuntu0.4)
lucid
Released (1.2.42-1ubuntu2.2)
maverick
Released (1.2.44-1ubuntu0.1)
natty
Released (1.2.44-1ubuntu3.1)
oneiric Not vulnerable
(1.2.46-3ubuntu1)
precise Not vulnerable
(1.2.46-3ubuntu1)
upstream
Released (1.2.45)
Patches:
upstream: http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng;a=commit;h=61a2d8a2a7b03023e63eae9a3e64607aaaa6d339

Severity score breakdown

Parameter Value
Base score 8.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H