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Description of problem:
Yet another "crasher" from Sauli Pahlman reported in Launchpad:
  https://bugs.launchpad.net/bugs/592637

Unknown tag can cause libtiff to abort program execution in tif_dirinfo.c _TIFFFieldWithTag (or _TIFFFieldWithName) due to failed assertion failure.  This can be tested with e.g. tiff2rgba on the test image file.

Version-Release number of selected component (if applicable):
libtiff-3.9.2-3.el6.i686

Additional info:
This issue does not affect libtiff in RHEL-3/4/5.  Even though problematic assert is part of upstream sources of older libtiff versions, it was removed from RHEL packages via libtiff-*-ormandy.patch added in RHSA-2006:0603 (see bug #199111).

Removing assert causes libtiff to try to deref NULL on multiple places.

This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release.  Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
Hat Enterprise Linux Major release.  This request is not yet committed for
inclusion.

This turns out to be already fixed in my local copy of 3.9.2, as a result of the patch I submitted for our bug #554371 (see http://bugzilla.maptools.org/show_bug.cgi?id=2210).  I haven't tested yet to see if it affects 3.8 or before.

There's not assert abort with libtiff-unknown-tags.patch applied.

Making this public, as there is public upstream bug for the issue.

This was assigned the name CVE-2010-2481.

(In reply to comment #8)
> This was assigned the name CVE-2010-2481.    

Actually, this should be a crash described as CVE-2010-2631.

Red Hat Enterprise Linux 6.0 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.