[ GLSA 200809-07 ] libTIFF: User-assisted execution of arbitrary code

[GLSA]

Gentoo Linux Security Advisory

Title: libTIFF: User-assisted execution of arbitrary code (GLSA 200809-07)
Severity: normal
Exploitable: remote
Date: September 08, 2008
Bug(s): #234080
ID: 200809-07

Synopsis


Multiple buffer underflow vulnerabilities in libTIFF may allow for the
remote execution of arbitrary code.


Background


libTIFF provides support for reading and manipulating TIFF (Tagged
Image File Format) images.


Affected Packages

Package: media-libs/tiff
Vulnerable: < 3.8.2-r4
Unaffected: >= 3.8.2-r4
Architectures: All supported architectures


Description


Drew Yao (Apple Product Security) and Clay Wood reported multiple
buffer underflows in the LZWDecode() and LZWDecodeCompat() functions in
tif_lzw.c when processing TIFF files.


Impact


A remote attacker could entice a user to open a specially crafted TIFF
file with an application making use of libTIFF, possibly resulting in
the remote execution of arbitrary code with the privileges of the user
running the application.


Workaround


There is no known workaround at this time.


Resolution


All libTIFF users should upgrade to the latest version: