To be noted, to exploit this issue, an attacker must be aware of the Windows username for the targeted user, which, however, can easily be obtained using the first SMBRelay attack. Way Too Vulnerable: Uncovering the State of the Identity Attack SurfaceĪchieved MFA? PAM? Service account protection? Find out how well-equipped your organization truly is against identity threats Supercharge Your Skills Once clicked, the attack would eventually allow the attacker-controlled SMB share to automatically capture authentication data from Windows, without the knowledge of the targeted user. To steal Windows login credentials of a targeted user, all an attacker needs to do is sent a crafted URL (i.e., \\x.x.x.x\abc_file) to a victim via a chat interface. Hacking Zoom to Steal Windows Passwords RemotelyĬonfirmed by researcher Matthew Hickey and demonstrated by Mohamed Baset, the first attack scenario involves the SMBRelay technique that exploits the fact that Windows automatically exposes a user's login username and NTLM password hashes to a remote SMB server when attempting to connect and download a file hosted on it. Such attacks are possible because Zoom for Windows supports remote UNC paths that convert potentially insecure URIs into hyperlinks when received via chat messages to a recipient in a personal or group chat. No doubt, Zoom is an efficient online video meeting solution that's helping people stay socially connected during these unprecedented times, but it's still not the best choice for everyone-especially those who really care about their privacy and security.Īccording to cybersecurity expert the Zoom video conferencing software for Windows is vulnerable to a classic ' UNC path injection' vulnerability that could allow remote attackers to steal victims' Windows login credentials and even execute arbitrary commands on their systems. Zoom has been there for nine years, but the immediate requirement of an easy-to-use video conferencing app during the coronavirus pandemic overnight made it one of the most favorite communication tool for millions of people around the globe.
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