Walied Assar has discovered a vulnerability in OllyDbg, which can be exploited by malicious people to potentially compromise a user's system.

The vulnerability is caused due to an integer overflow error when allocating memory based on the size of the resource directory entry. This can be exploited to cause a heap-based buffer overflow via a specially crafted Portable Executable (PE) file.

Successful exploitation may allow execution of arbitrary code, but requires tricking a user into opening a specially crafted file (does not require debugging it).

The vulnerability is confirmed in version 1.10. Other versions may also be affected.

Solution
Do not open files from untrusted sources.

Provided and/or discovered by
Walied Assar

Original Advisory
http://waleedassar.blogspot.com/2012/03/ollydbg-resource-table-parsing-integer.html

Other references
Further details available to Secunia VIM customers

Deep Links
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