Flaws in Zoom’s Keybase App Kept Chat Images From Being Deleted
upstart writes in with an IRC submission:
Exclusive: Flaws in Zoom's Keybase App Kept Chat Images From Being Deleted:
A serious flaw in Zoom's Keybase secure chat application left copies of images contained in secure communications on Keybase users' computers after they were supposedly deleted.
The flaw in the encrypted messaging application (CVE-2021-23827) does not expose Keybase users to remote compromise. However, it could put their security, privacy and safety at risk, especially for users living under authoritarian regimes in which apps like Keybase and Signal are increasingly relied on as a way to conduct conversations out of earshot of law enforcement or security services.
The flaw was discovered by researchers from the group Sakura Samurai as part of a bug bounty program offered by Zoom, which acquired Keybase in May, 2020. Zoom said it has fixed the flaw in the latest versions of its software for Windows, macOS and Linux.
[...] In a statement, a Zoom spokesman said that the company appreciates the work of the researchers and takes privacy and security "very seriously."
"We addressed the issue identified by the Sakura Samurai researchers on our Keybase platform in version 5.6.0 for Windows and macOS and version 5.6.1 for Linux. Users can help keep themselves secure by applying current updates or downloading the latest Keybase software with all current security updates," the spokesman said.
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