libTIFF: User-assisted execution of arbitrary code

libTIFF: User-assisted execution of arbitrary code Multiple boundary checking vulnerabilities in libTIFF may allow for the remote execution of arbitrary code. tiff 2009-08-07 2009-08-07 276339 276988 remote 3.8.2-r8 3.8.2-r8

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

Two vulnerabilities have been reported in libTIFF:

wololo reported a buffer underflow in the LZWDecodeCompat() function (CVE-2009-2285).
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"

CVE-2009-2285 CVE-2009-2347 rbu rbu a3li