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Vulnerability Note VU#526131HP Online Support Services ActiveX RegistryString() buffer overflowOverviewHP Online Support Services contains the function RegistryString(), which can be exploited to cause a buffer overflow. This may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.I. DescriptionHP Services provides online product support services including HP Instant Support. The HPISDataManager.dll ActiveX control contains the insecure function RegistryString(), which can be exploited by a malicious attacker to cause a buffer overflow on a vulnerable system.Note that the HP Support Services ActiveX control is locked to certain domains, such as hp.com. This means that an attacker would have to subvert the host name lookup methodology on a victim's system or exploit a cross-site scripting vulnerability in one of the allowed domains to exploit this vulnerability.
From the HP Support Document: The vulnerabilities can also be resolved by the following procedure: Set the kill bit for the vulnerable ActiveX control's Class identifier (CLSID) {14C1B87C-3342-445F-9B5E-365FF330A3AC} . The kill bit is set by modifying the data value of the Compatibility Flags DWORD value for the CLSID of this ActiveX control to 0x00000400. This is explained in Microsoft's article KB240797 or subsequent. http://support.microsoft.com/kb/240797 . Systems Affected
References
Hewlett-Packard credits Dennis Rand of CSIS Security Research and Intelligence for discovering this vulnerability. This document was written by Joseph Pruszynski.
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