Severe vulnerability in Cisco’s WebEx extension for Chrome leaves PCs open to easy attack



Anyone who uses the popular Cisco WebEx extension for Chrome should update to the latest version pronto. Google security researcher Tavis Ormandy recently discovered a serious vulnerability in the Chrome extension that leaves PCs wide open to attack.

In older versions of the extension (before version 1.0.3) malicious actors could add a “magic string” to a web address or file hosted on a website. The magic string was designed to remotely activate the WebEx browser extension. Once the extension was activated the bad guys could execute malicious code on the target machine.

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