[SECURITY] Fedora 15 Update: mingw32-libtiff-3.9.5-1.fc15

updates at fedoraproject.org updates at fedoraproject.org
Sat Apr 30 01:38:04 UTC 2011

Fedora Update Notification
2011-04-26 15:28:46

Name        : mingw32-libtiff
Product     : Fedora 15
Version     : 3.9.5
Release     : 1.fc15
URL         : http://www.remotesensing.org/libtiff/
Summary     : MinGW Windows port of the LibTIFF library
Description :
The libtiff package contains a library of functions for manipulating
TIFF (Tagged Image File Format) image format files.  TIFF is a widely
used file format for bitmapped images.  TIFF files usually end in the
.tif extension and they are often quite large.

The libtiff package should be installed if you need to manipulate TIFF
format image files.

Update Information:

Update MinGW Windows cross-compiled libtiff to 3.9.5, incorporating most of our previous patches.

Includes a fix for CVE-2011-1167:
A flaw was reported in libtiff's thunder decoder.  The thunder decoder assumes 4bits per pixel, but if a file has bitpersample set to a smaller value, or defaulted (1) then the allocated strip buffer will be too small, and a heap-based buffer overlow may occur.  This could be used to crash an application linked to libtiff, or execute arbitrary code with the privileges of the application opening a malicious TIFF file.

  [ 1 ] Bug #684939 - CVE-2011-1167 libtiff: heap-based buffer overflow in thunder decoder (ZDI-11-107)

This update can be installed with the "yum" update program.  Use 
su -c 'yum update mingw32-libtiff' at the command line.
For more information, refer to "Managing Software with yum",
available at http://docs.fedoraproject.org/yum/.

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