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tiff: Buffer overflows in image decoding

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200410-11 / tiff
Release Date October 13, 2004
Latest Revision October 13, 2004: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
media-libs/tiff < 3.6.1-r2 >= 3.6.1-r2 All supported architectures
media-gfx/xv <= 3.10a-r7 >= 3.10a-r8 All supported architectures

Related bugreports: No related gentoo bugreports

Synopsis

Multiple heap-based overflows have been found in the tiff library image decoding routines, potentially allowing to execute arbitrary code with the rights of the user viewing a malicious image.

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, to help in displaying TIFF images. xv is a multi-format image manipulation utility that is statically linked to the tiff library.

Description

Chris Evans found heap-based overflows in RLE decoding routines in tif_next.c, tif_thunder.c and potentially tif_luv.c.

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 GNOME and KDE 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 -pv ">=media-libs/tiff-3.6.1-r2"
# emerge ">=media-libs/tiff-3.6.1-r2"

xv makes use of the tiff library and needs to be recompiled to receive the new patched version of the library. All xv users should also upgrade to the latest version:

Code Listing 3.2: Resolution

# emerge sync
# emerge -pv ">=media-gfx/xv-3.10a-r8"
# emerge ">=media-gfx/xv-3.10a-r8"

4.  References



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Page updated October 13, 2004

Summary: This is a Gentoo Linux Security Advisory

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