tiff: New overflows in image decoding

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200501-06 / tiff
Release Date	January 05, 2005
Latest Revision	January 05, 2005: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-libs/tiff	< 3.7.1-r1	>= 3.7.1-r1	All supported architectures

Related bugreports: #75213

Synopsis

An integer overflow has been found in the TIFF library image decoding routines and the tiffdump utility, potentially allowing arbitrary code execution.

2. Impact Information

Background

The TIFF library contains encoding and decoding routines for the Tag Image File Format. It is called by numerous programs, including GNOME and KDE applications, to interpret TIFF images.

Description

infamous41md found a potential integer overflow in the directory entry count routines of the TIFF library (CAN-2004-1308). Dmitry V. Levin found another similar issue in the tiffdump utility (CAN-2004-1183).

Impact

A remote attacker could entice a user to view a carefully crafted TIFF image file, which would potentially lead to execution of arbitrary code with the rights of the user viewing the image. This affects any program that makes use of the TIFF library, including many web browsers or mail readers.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All TIFF library users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/tiff-3.7.1-r1"

4. References

Page updated January 05, 2005

Summary: This is a Gentoo Linux Security Advisory

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