LibTIFF Multiple Image Decoder Parsing Vulnerabilities
Secunia Advisory: SA12818
Release Date: 2004-10-14
Last Update: 2005-08-18
Popularity: 13,333 views

Critical:
Highly critical
Impact: DoS
System access
Where: From remote
Solution Status: Vendor Patch

Software:LibTIFF 3.x

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CVE reference:CVE-2004-0803
CVE-2004-0804
CVE-2004-0886
CVE-2005-2452


Description:
Multiple vulnerabilities have been reported in LibTIFF, which can be exploited by malicious people to cause a DoS (Denial of Service) or potentially compromise a vulnerable system.

1) Boundary errors within the RLE decoding in "tif_next.c", "tif_thunder.c", and "tif_luv.c" can be exploited to cause heap-based buffer overflows. This can be exploited with a specially crafted TIFF image file to execute arbitrary code via an application linked to the vulnerable library.

2) Some unspecified integer overflows may potentially allow arbitrary code execution on a user's system.

3) A division-by-zero error can be exploited via an integer overflow to crash an application linked against the vulnerable library.

4) A division-by-zero error in the handling of "YCbCr subsampling" values in TIFF image headers can be exploited to crash an application linked against the vulnerable library.

The vulnerabilities have been reported in version 3.6.1. Other versions may also be affected.

Solution:
Update to version 3.7.1 or later.

Provided and/or discovered by:
1) Chris Evans
2) Dmitry V. Levin
3) Matthias Clasen
4) Wouter Hanegraaff

Changelog:
2004-10-18: Added information about division-by-zero vulnerability.
2004-12-02: Added link to US-CERT vulnerability note.
2005-05-24: Updated "Solution" section.
2005-07-29: Added vulnerability provided by Wouter Hanegraaff. Updated "Description" section.
2005-08-18: Added CVE reference.

Original Advisory:
http://scary.beasts.org/security/CESA-2004-006.txt
http://bugzilla.remotesensing.org/show_bug.cgi?id=111

Other References:
US-CERT VU#687568:
http://www.kb.cert.org/vuls/id/687568


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