Channel Register

Original URL: http://www.channelregister.co.uk/2007/10/20/realplayer_vuln/

IE + RealPlayer = Security hole

By Dan Goodin
Published Saturday 20th October 2007 00:11 GMT

If you have RealPlayer installed and use Internet Explorer to browse the web, beware: an exploit in circulation can allow an attacker to take complete control of your machine, Symantec is warning.

Attacks targeting the most recent version of RealNetworks' music and video player were first observed Thursday night. They exploit a vulnerability in the way RealPlayer interacts with IE, providing a stealthy means for miscreants to shoehorn their way into a user's PC.

"If you have RealPlayer installed, simply visiting a malicious Web page can put your computer at risk," a Symantec blog post (http://www.symantec.com/enterprise/security_response/weblog/2007/10/realplayer_exploit_on_the_loos.html) explains. "The player does not need to be running."

The ActiveX object being exploited resides in the the RealPlayer component ierpplug.dll. Attack code reviewed by Symantec causes RealPlayer to download and execute a copy of Trojan.Zonebac.

Until RealNetworks issues a patch, workarounds include:

Another option is to use Firefox as your primary browser, preferably along with the NoScript (http://noscript.net/) add-on. ®

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