Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date: Sun, 21 Jun 2009 17:14:24 -0700
From: Kees Cook <>
Subject: libtiff buffer underflow in LZWDecodeCompat

A crafted TIFF can crash libtiff in LZWDecodeCompat via underflow (different
from CVE-2008-2327).

Based on discussions[1] and a quick analysis[2], I don't think this is
exploitable, but it does lead to crashes in any application using libtiff.
I've reported it upstream[3], with the attached patch.

Has anyone else looked this over?



Kees Cook
Ubuntu Security Team

View attachment "lzw_underflow.patch" of type "text/x-diff" (681 bytes)

Powered by blists - more mailing lists

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.