Multiple unspecified vulnerabilities in Microsoft Office Publisher allow user-assisted remote attackers to cause a denial of service (application crash) via a crafted PUB file, possibly involving wordart.

PUBCONV.DLL in Microsoft Office Publisher 2007 does not properly clear memory when transferring data from disk to memory, which allows user-assisted remote attackers to execute arbitrary code via a malformed .pub page via a certain negative value, which bypasses a sanitization procedure that initializes critical pointers to NULL, aka the "Publisher Invalid Memory Reference Vulnerability".

Unspecified vulnerability in Publisher 2007 in Microsoft Office 2007 allows remote attackers to execute arbitrary code via unspecified vectors, related to a "file format vulnerability." NOTE: this information is based upon a vague pre-advisory with no actionable information. However, the advisory is from a reliable source.