Technical Description

Multiple vulnerabilities have been identified in Ourgame GLWorld, which could be exploited by remote attackers to cause a denial of service or take complete control of an affected system. These issues are caused by buffer overflow errors in the "HanGamePluginCn18.dll" ActiveX control when processing overly long arguments passed to the "hgs_startGame()" and "hgs_startNotify()" methods, which could be exploited by remote attackers to execute arbitrary code by tricking a user into visiting a specially crafted web page.

Note: This vulnerability is currently being exploited in the wild.

Affected Products

Ourgame GLWorld version 2.6.1.29 and prior

Solution

Set a kill bit for the CLSID {61F5C358-60FB-4A23-A312-D2B556620F20}.

VUPEN Security is not aware of any vendor-supplied patch.

References

http://www.vupen.com/english/advisories/2008/0427
http://www.symantec.com/enterprise/security_response/weblog/2008/02/zeroday_exploit_for_lianzong_g.html

Credits

Vulnerability reported by Symantec.

ChangeLog

2008-02-06 : Initial release

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