----------
Background
----------

Libtiff provides support for the Tag Image File Format (TIFF), a widely 
used format for storing image data.

----------------
Software Version
----------------

All tests were performed using libtiff 4.0.3

-----------
Description
-----------

Fuzzing bmp2tiff, using the afl-fuzzer, revealed an integer overflow 
issue related to the dimensions of the input BMP image. The issue 
resulted in an out-of-bounds memory read which causes the application to 
crash. Details can be found at 
http://bugzilla.maptools.org/show_bug.cgi?id=2494.

--------
Timeline
--------

2014-12-09 Discovery reported to libtiff bug tracker
2014-12-21 Issue was fixed
2014-12-22 Public Disclosure

-------
Credits
-------

Reported by Paris Zoumpouloglou of Project Zero labs

-- 
Project Zero Labs

@projectzerolabs
https://www.projectzero.gr