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The Zoom video conferencing platform has come under increased scrutiny due to the widespread organizational move to remote work. Security researchers have discovered multiple vulnerabilities in the platform’s software  and threat actors actively targeting Zoom meetings . Organizations using Zoom should ensure that stringent security settings are applied to all meetings.
What we’re doing about it
What you should do about it
A security researcher identified an unpatched UNC path injection vulnerability in Zoom's chat application . The vulnerability can be exploited to steal hashed passwords or cause local code execution. This vulnerability is ranked as a medium criticality as the attacker would need to gain access to a Zoom chat prior to launching the attack. In order to exploit the vulnerability, an attacker would need to send a UNC link via Zoom's chat feature and convince the end user to click the link. This security issue was fixed by Zoom on April 1st, 2020.
On March 30th, 2020, a security researcher released two unpatched vulnerabilities affecting Zoom’s macOS client . The vulnerabilities can be exploited to cause privilege escalation and code injection for microphone and camera access. Zoom has announced that these issues were fixed as of April 1st, 2020. The criticality of these vulnerabilities is low as in order to exploit these vulnerabilities a threat actor would to have previously compromised the target machine.
There have been widespread reports of ZoomBombing, where an uninvited individual gains access to a Zoom meeting and either disrupts the meeting or listens for privileged information. ZoomBombing is not the result of a direct vulnerability but is rather due to the 9-11 character Zoom meeting IDs. These IDs can be easily guessed, allowing threat actors and pranksters to identify open meetings. The inclusion of meeting passwords prevents ZoomBombing.
Zoom has historically claimed to offer end to end encryption for video meetings. This claim was inaccurate, as Zoom supports transport encryption rather than end to end encryption . Despite the misleading claim, any risks posed by not having end to end encryption is minimal at best. Zoom has released an article to explain the current encryption offered in their service .
Zoom has flaws but offers significant value as an easy to use video conferencing software. The company has released a public explanation and apology to customers which includes a list of actions taken and future plans for security .