This attack could pose a serious security threat. You should take immediate action to stop any damage or prevent further damage from happening.
This signature attempts to detect buffer overflow vulnerability by passing excessively long characters to a method of the PowerPointViewer.ocx ActiveX control.
PowerPoint Viewer (PowerPointViewer.ocx) is used to host a PowerPoint file on a website.
PowerPoint Viewer ActiveX control is prone to multiple denial-of-service vulnerabilities.
These issues present themselves in the 'HttpDownload' ,'DoOleCommand', 'FTPDownloadFile', 'FTPUploadFile', 'HttpUploadFile', 'Save', and 'SaveWebFile' methods. Supplying excessive or specially crafted data to the application through the affected methods can trigger these issues.
Exploiting these issues allows remote attackers to crash applications that employ the vulnerable controls (typically Microsoft Internet Explorer).
PowerPoint Viewer ActiveX Control 3.1 is reported vulnerable to these issues; other versions may also be affected.
- Office OCX PowerPoint Viewer 3.1
Ensure that all patches and security updates have been applied.