Bug 150877 - CAN-2005-0399 firefox GIF buffer overflow
Summary: CAN-2005-0399 firefox GIF buffer overflow
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: firefox
Version: 4.0
Hardware: All
OS: Linux
medium
urgent
Target Milestone: ---
: ---
Assignee: Christopher Aillon
QA Contact:
URL:
Whiteboard: impact=critical,embargo=yes,source=mo...
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2005-03-11 16:01 UTC by Josh Bressers
Modified: 2007-11-30 22:07 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2005-03-23 19:21:22 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2005:336 0 normal SHIPPED_LIVE Critical: firefox security update 2005-03-23 05:00:00 UTC

Description Josh Bressers 2005-03-11 16:01:42 UTC
The mozilla applications contain several image decoders for displaying images 
of various formats. Amoung the most common image formats is the Graphic 
Information File (GIF) format. The code for this parser is located in:

mozilla/modules/libpr0n/decoders/gif/GIF2.cpp

A vulnerability exists in the parsing of a Netscape-specific extension block 
that specifies a 32-bit size integer indicating how much image data the 
application should buffer, which is shown (taken from the gif_write() 
function).

Comment 1 Josh Bressers 2005-03-23 18:35:12 UTC
Lifting embargo

Comment 2 Josh Bressers 2005-03-23 19:21:22 UTC
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2005-336.html



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