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Category:   Application (Generic)  >   libungif Vendors:   libungif.sourceforge.net
libungif NULL Pointer Dereference and Memory Access Error May Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1015149
SecurityTracker URL:  http://securitytracker.com/id/1015149
CVE Reference:   CVE-2005-2974, CVE-2005-3350   (Links to External Site)
Date:  Nov 3 2005
Impact:   Denial of service via network, Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 4.1.4
Description:   A vulnerability was reported in libungif. A remote user may be able to cause arbitrary code to be executed on the target system.

A remote user can create a specially crafted GIF image that, when processed by the target user, will cause the affected application to crash or potentially execute arbitrary code.

In one case, a specially crafted GIF image can trigger a NULL pointer dereference [CVE-2005-2974]. In another case, a specially crafted GIF image can trigger an out-of-bounds memory write access [CVE-2005-3350].

Applications that use libungif are affected.

Chris Evans and Daniel Eisenbud discovered these vulnerabilities.

Impact:   A remote user can create a file that, when processed, will cause the affected application to crash or execute arbitrary code.
Solution:   The vendor has issued a fixed version (4.1.4), available at:

http://sourceforge.net/project/showfiles.php?group_id=102202

Vendor URL:  sourceforge.net/projects/libungif (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Nov 3 2005 (Red Hat Issues Fix) libungif NULL Pointer Dereference and Memory Access Error May Let Remote Users Execute Arbitrary Code
Red Hat has released a fix for Red Hat Enterprise Linux 2.1, 3, and 4.
Apr 23 2009 (Red Hat Issues Fix for giflib) libungif NULL Pointer Dereference and Memory Access Error May Let Remote Users Execute Arbitrary Code
Red Hat has released a fix for giflib for Red Hat Enterprise Linux 5.



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