Some vulnerabilities have been reported in LibTIFF, which can potentially be exploited by malicious people to cause a DoS (Denial of Service) and compromise an application using the library.
1) Integer overflow errors in the processing of TIFF files can be exploited to cause heap-based buffer overflows by e.g. tricking a user into opening a specially crafted TIFF image in an application using the library.
2) An error due to missing checks for the return code of "TIFFroundup()" in "TIFFReadBufferSetup()" during the processing of TIFF images can be exploited to cause a buffer overflow when a specially crafted TIFF image is being processed.
3) An error within the "OJPEGReadBufferFill()" function in libtiff/tif_ojpeg.c can be exploited to cause a crash if strip offsets are not defined.
The vulnerabilities are reported in versions prior to 3.9.3.
Solution: Update to version 3.9.3.
Provided and/or discovered by: 1) The vendor credits Kevin Finisterre, digitalmunition.com
2) Red Hat credits Sauli Pahlman of CERT-FI.
3) Sauli Pahlman
Original Advisory: http://www.remotesensing.org/libtiff/v3.9.3.html
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Subject: LibTIFF Multiple Vulnerabilities
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