Joined: 12 May 2004
|Posted: Sat Aug 22, 2009 2:26 am Post subject: [ GLSA 200908-03 ] libTIFF: User-assisted execution of arbit
|Gentoo Linux Security Advisory
Title: libTIFF: User-assisted execution of arbitrary code (GLSA 200908-03)
Date: August 07, 2009
Bug(s): #276339, #276988
Multiple boundary checking vulnerabilities in libTIFF may allow for the
remote execution of arbitrary code.
libTIFF provides support for reading and manipulating TIFF (Tagged
Image File Format) images.
Vulnerable: < 3.8.2-r8
Unaffected: >= 3.8.2-r8
Architectures: All supported architectures
Two vulnerabilities have been reported in libTIFF:
wololo reported a buffer underflow in the LZWDecodeCompat() function
Tielei Wang of ICST-ERCIS, Peking University reported two integer
overflows leading to heap-based buffer overflows in the tiff2rgba and
rgb2ycbcr tools (CVE-2009-2347).
A remote attacker could entice a user to open a specially crafted TIFF
file with an application making use of libTIFF or the tiff2rgba and
rgb2ycbcr tools, possibly resulting in the execution of arbitrary code
with the privileges of the user running the application.
There is no known workaround at this time.
All libTIFF users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/tiff-3.8.2-r8"