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Insecure Library Loading
Highly critical

LibTIFF Integer Overflow and Type Casting Vulnerabilities

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Release Date:  2012-04-05    Last Update:  2012-08-22    Views:  2,134

Secunia Advisory SA48684

Where:

From remote

Impact:

System access

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Some vulnerabilities have been reported in LibTIFF, which can be exploited by malicious people to compromise an application using the library.

1) Two integer overflow errors in the "gtTileSeparate()" and "gtStripSeparate()" functions (libtiff/tif_getimage.c) when parsing images can be exploited to cause heap-based buffer overflows via specially crafted TIFF images.

2) A type casting error in the "TIFFReadDirectory()" function (tif_dirread.c) when parsing a tiled image can be exploited to cause a buffer overflow via a specially crafted TIFF image.

This vulnerability is reported in versions prior to 4.0.x only.

Successful exploitation of the vulnerabilities may allow execution of arbitrary code.


Solution:
Apply patches. Update to version 4.0.x which fixes vulnerability #2.

Further details available to Secunia VIM customers

Provided and/or discovered by:
1) Alexander Gavrun via ZDI.
2) Reported by Karel Volný in a Red Hat bug report.

Original Advisory:
http://home.gdal.org/private/zdi-can-1221/zdi-can-1221.txt

Red Hat:
https://bugzilla.redhat.com/show_bug.cgi?id=810551

ZDI:
http://www.zerodayinitiative.com/advisories/ZDI-12-043/

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: LibTIFF Integer Overflow and Type Casting Vulnerabilities

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