shinnai has discovered two vulnerabilities in Microsoft Visual Basic, which can be exploited by malicious people to compromise a user's system.

The vulnerabilities are caused due to boundary errors in MSDE.dll when handling .dsr files and can be exploited to cause stack-based buffer overflows via a .dsr file with an overly-long "ConnectionName" or "CommandName" string.

Successful exploitation allows execution of arbitrary code, but requires that the user is tricked into e.g. opening a malicious .dsr file, opening the Object window via e.g. "View Object", and clicking on the "ConnectionName" or "CommandName".

The vulnerabilities are confirmed in version 6.0 (SP6). Other versions may also be affected.

Solution
Do not open untrusted .dsr files.

Provided and/or discovered by
shinnai

Changelog
Further details available in Customer Area

Original Advisory
http://www.milw0rm.com/exploits/4938

Deep Links
Links available in Customer Area