Synopsis:          Moderate: libtiff security update
CVE Names:         CVE-2009-2285 CVE-2009-2347

CVE-2009-2285 libtiff: LZWDecodeCompat underflow
CVE-2009-2347 libtiff: integer overflows in various inter-color spaces conversion tools (crash, ACE)

Several integer overflow flaws, leading to heap-based buffer overflows,
were found in various libtiff color space conversion tools. An attacker
could create a specially-crafted TIFF file, which once opened by an
unsuspecting user, would cause the conversion tool to crash or,
potentially, execute arbitrary code with the privileges of the user running
the tool. (CVE-2009-2347)

A buffer underwrite flaw was found in libtiff's Lempel-Ziv-Welch (LZW)
compression algorithm decoder. An attacker could create a specially-crafted
LZW-encoded TIFF file, which once opened by an unsuspecting user, would
cause an application linked with libtiff to access an out-of-bounds memory
location, leading to a denial of service (application crash).
(CVE-2009-2285)

The CVE-2009-2347 flaws were discovered by Tielei Wang from ICST-ERCIS,
Peking University.

SL 3.0.x

   SRPM:
      libtiff-3.5.7-33.el3.src.rpm

   i386:
      libtiff-3.5.7-33.el3.i386.rpm
      libtiff-devel-3.5.7-33.el3.i386.rpm

   x86_64:
      libtiff-3.5.7-33.el3.i386.rpm
      libtiff-3.5.7-33.el3.x86_64.rpm
      libtiff-devel-3.5.7-33.el3.x86_64.rpm

SL 4.x

   SRPM:
      libtiff-3.6.1-12.el4_8.4.src.rpm

   i386:
      libtiff-3.6.1-12.el4_8.4.i386.rpm
      libtiff-devel-3.6.1-12.el4_8.4.i386.rpm

   x86_64:
      libtiff-3.6.1-12.el4_8.4.i386.rpm
      libtiff-3.6.1-12.el4_8.4.x86_64.rpm
      libtiff-devel-3.6.1-12.el4_8.4.x86_64.rpm

SL 5.x

   SRPM:
      libtiff-3.8.2-7.el5_3.4.src.rpm

   i386:
      libtiff-3.8.2-7.el5_3.4.i386.rpm
      libtiff-devel-3.8.2-7.el5_3.4.i386.rpm

   x86_64:
      libtiff-3.8.2-7.el5_3.4.i386.rpm
      libtiff-3.8.2-7.el5_3.4.x86_64.rpm
      libtiff-devel-3.8.2-7.el5_3.4.i386.rpm
      libtiff-devel-3.8.2-7.el5_3.4.x86_64.rpm

-Connie Sieh
-Troy Dawson