Zoom patches critical vulnerability again after prior fix was bypassed

By | August 18, 2022
A critical vulnerability in Zoom for MacOS, patched once last weekend, could still be bypassed as of Wednesday. Users should update again.
Enlarge / A critical vulnerability in Zoom for MacOS, patched once last weekend, could still be bypassed as of Wednesday. Users should update again.
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It’s time for Zoom users on Mac to update—again.

After Zoom patched a vulnerability in its Mac auto-update utility that could give malicious actors root access earlier this week, the video conferencing software company issued another patch Wednesday, noting that the prior fix could be bypassed.

Zoom users on macOS should download and run version 5.11.6 (9890), released August 17. You can also check Zoom’s menu bar for updates. Waiting for an automatic update could leave you waiting days while this exploit is publicly known.

Zoom’s incomplete fix was reported by macOS security researcher Csaba Fitzl, aka theevilbit of Offensive Security. Zoom credited Fitzl in its security bulletin (ZSB-22019) and issued a patch the day before Fitzl tweeted about it.

Neither Fitzl nor Zoom detailed how Fitzl was able to bypass the fix for the vulnerability first discovered by Patrick Wardle, founder of the Objective-See Foundation. Wardle Source