Title: Ultra Office Control 'HttpUpload()' Method Buffer Overflow Vulnerability
Severity: HIGH
Description:
Ultra Office Control is an ActiveX control that allows users to open, view, and edit Microsoft Office documents in a web browser.
Ultra Office Control is prone to a buffer-overflow vulnerability because the application fails to perform adequate boundary checks on user-supplied data. The vulnerability affects the 'HttpUpload()' method of the 'OfficeCtrl.ocx' ActiveX control identified by CLSID:
00989888-BB72-4E31-A7C6-5F819C24D2F7
An attacker can exploit this issue to execute arbitrary code in the context of an application using the ActiveX control (typically Internet Explorer). Failed attacks will likely cause denial-of-service conditions.
Ultra Office Control 2.0.2008.501 is vulnerable; other versions may also be affected.
Affected Products:
- Ultra Shareware Ultra Office Control 2.0.2008.501
References:
- Microsoft: Microsoft Knowledge Base Article 240797
- Ultra Shareware: Ultra Office Control Homepage
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