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Vulnerability Note VU#125598LibTIFF vulnerable to integer overflow via corrupted directory entry countOverviewAn integer overflow in LibTIFF may allow a remote attacker to execute arbitrary code.I. DescriptionLibTIFF is a library used to encode and decode images in Tag Image File Format (TIFF). A lack of validation on user supplied input may allow buffer overflow to occur. TIFF files contain directory entry header fields to describe the data in the file. If a remote attacker creates a TIFF file with specially crafted directory headers and persuades a user to access that file, an integer overflow will occur that may eventually lead to a heap-based buffer overflow.II. ImpactIf a remote attacker can persuade a user to access a specially crafted TIFF image, that attacker may be able to execute arbitrary code with the privileges of that user.III. SolutionUpgrade or PatchThis issue has been corrected in LibTIFF version 3.7.1. Obtain a patch or upgraded software from your vendor. Recompile statically linked applications.
References
This vulnerability was reported by iDefense. This document was written by Jeff Gennari.
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