shinnai has reported some vulnerabilities in Ultra Office Control, which can be exploited by malicious people to compromise a user's system.

1) A boundary error exists in the Ultra.OfficeControl ActiveX control (OfficeCtrl.ocx) when handling parameters received by the "HttpUpload()" method. This can be exploited to cause a stack-based buffer overflow by e.g. tricking a user into visiting a malicious website.

2) The "Save()" method provided by the Ultra.OfficeControl ActiveX control (OfficeCtrl.ocx) allows attackers to overwrite arbitrary files on a user's system by e.g. tricking a user into visiting a malicious website.

Successful exploitation of the vulnerabilities may allow execution of arbitrary code.

The vulnerabilities are reported in version 2.0.2008.501. Other versions may also be affected.

Solution
Set the kill-bit for the affected ActiveX control.

Provided and/or discovered by
shinnai

Changelog
Further details available in Customer Area

Original Advisory
http://www.shinnai.net/index.php?mod=02_Forum&group=Security&argument=Remote_performed_exploits&topic=1219826651.ff.php
http://www.shinnai.net/index.php?mod=02_Forum&group=Security&argument=Remote_performed_exploits&topic=1219827906.ff.php

Alternate/detailed remediation
Further details available in Customer Area

Deep Links
Links available in Customer Area