1. Symantec/
  2. Security Response/
  3. Attack Signatures/
  4. HTTP WebEx GPCContainer ActiveX DoS

HTTP WebEx GPCContainer ActiveX DoS

Severity: High

This attack could pose a serious security threat. You should take immediate action to stop any damage or prevent further damage from happening.

Description

This signature detects attempt to trigger a denial of service vulnerability by instantiating WebEx GPCContainer ActiveX Control in Internet Explorer.

Additional Information

WebEx is a sharing and conferencing application for Microsoft Windows.

WebEx is prone to multiple denial-of-service vulnerabilities that stem from a memory-access violation in the 'GpcContainer' ActiveX control. Specifically, a memory-access violation occurs when the AcitveX control is instantiated.

Attackers can exploit these issues to crash applications that use the ActiveX control, denying service to legitimate users.
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