Network Security, Patch/Configuration Management, Vulnerability Management

Cisco patches critical remote code execution flaw in WebEx browser extensions

Cisco on Monday released software updates to fix a critical remote code execution vulnerability in its WebEx browser extensions for both the Google Chrome and Mozilla Firefox browsers.

Officially designated as CVE-2017-6753, the bug affects Cisco's extensions for its WebEx Meetings Server, Cisco WebEx Centers, and Cisco WebEx Meetings, leaving them susceptible to attack when running on Microsoft Windows.

According to a Cisco security advisory, an unauthenticated, remote adversary could exploit the flaw to execute code, with browser privileges, by tricking a user into their visiting an attacker-controlled website or clicking on a malicious link.

WebEx extensions Versions prior to 1.0.12 for both Chrome and Firefox contain the flaw, which Cisco said is "due to a design defect."

Bradley Barth

As director of community content at CyberRisk Alliance, Bradley Barth develops content for SC Media online conferences and events, as well as video/multimedia projects. For nearly six years, he wrote and reported for SC Media as deputy editor and, before that, senior reporter. He was previously a program executive with the tech-focused PR firm Voxus. Past journalistic experience includes stints as business editor at Executive Technology, a staff writer at New York Sportscene and a freelance journalist covering travel and entertainment. In his spare time, Bradley also writes screenplays.

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