Secunia Research has discovered a vulnerability in PicoZip version 4.01, which can be exploited by malicious people to compromise a user's system. The vulnerability is caused due to a boundary error within the "zipinfo.dll" info tip shell extension when reading a ACE, RAR, or ZIP archive that contains a file with an overly long filename. This can be exploited to cause a stack-based buffer overflow when the user moves the mouse cursor over a malicious archive either in Windows Explorer or from any program that uses the file-open dialog box. Successful exploitation allows arbitrary code execution.
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