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Bugs in Signal, other video chat apps allowed attackers to listen in on users

21
Jan
2021
Bugs in Signal, other video chat apps allowed attackers to listen in on users

image credit: pxhere

Bugs in several messaging/video chat mobile apps allowed attackers to spy on targeted users’s surroundings. The vulnerabilities – in Signal, Google Duo, Facebook Messenger, JioChat, and Mocha – could be triggered by simply placing a call to the target’s device – no other action was needed.

Searching for bugs in video chat apps

In early 2019, Apple fixed a major logic bug (CVE-2019-6223) in its Group FaceTime feature. The bug, discovered by a Tucson high-schooler, would allow the initiator of a Group FaceTime call to listen to what was happening in the target device’s surroundings even if the target doesn’t pick up the call.

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