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Date: Thu, 24 Jun 2010 09:03:59 +0200
From: Tomas Hoger <>
Subject: Re: CVE requests: LibTIFF

On Wed, 23 Jun 2010 14:01:14 -0400 Dan Rosenberg wrote:

> 1.  Out-of-bounds read in TIFFExtractData() may result in application
> crash (no reference, fixed upstream).  Reported by Dan Rosenberg.

Do you have any info on this?  I don't see anything obviously related
in changelog.  TIFFExtractData itself and all its uses seem unchanged
for years.

> 2.  Out-of-bounds read in TIFFVGetField() may result in application
> crash
> (

This is NULL deref.  Another Sauli's test case shows that similar
problem can occur with NULL td_stripbytecount few lines below
td_stripoffset case addressed in upstream patch.

> The fix for this issue was combined with the fix for CVE-2010-2065,
> but it appears to be a separate issue.  Reported by Sauli Pahlman.

Right, not related to what CVE-2010-2065 was assigned to.

> 3.  Memory corruption in TIFFRGBAImageGet() due to buffer overflow
> (
> Reported by Sauli Pahlman.

IIRC, Sauli's file only demonstrates OOB read.  Upstream bug:

> 4. ("tif_getimage
> fails when flipping vertically on 64-bit platforms")

CVE-2010-2233 was assigned to this issue.

Tomas Hoger / Red Hat Security Response Team

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