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Sicherheit: Pufferüberlauf in mingw32-libtiff
Aktuelle Meldungen Distributionen
Name: Pufferüberlauf in mingw32-libtiff
ID: FEDORA-2011-5962
Distribution: Fedora
Plattformen: Fedora 14
Datum: Mi, 4. Mai 2011, 07:31
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1167
Applikationen: mingw32-libtiff

Originalnachricht

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Fedora Update Notification
FEDORA-2011-5962
2011-04-25 20:23:15
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Name : mingw32-libtiff
Product : Fedora 14
Version : 3.9.5
Release : 1.fc14
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.

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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.
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ChangeLog:

* Mon Apr 25 2011 Kalev Lember <kalev@smartlink.ee> - 3.9.5-1
- Update to 3.9.5
- Fixes CVE-2011-1167 (#689575)
- Dropped the patches from Fedora native libtiff package which are all now
incorporated in 3.9.5
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References:

[ 1 ] Bug #689575 - CVE-2011-1167 libtiff: heap-based buffer overflow in
thunder decoder (ZDI-CAN-1004) [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=689575
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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/.

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
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