CVE-2022-41971 – Nextcloud Talk guests can continue to receive video streams from call after being removed from a conversation

https://notcve.org/view.php?id=CVE-2022-41971

Nextcould Talk android is a video and audio conferencing app for Nextcloud. Prior to versions 12.2.8, 13.0.10, 14.0.6, and 15.0.0, guests can continue to receive video streams from a call after being removed from a conversation. An attacker would be able to see videos on a call in a public conversation after being removed from that conversation, provided that they were removed while being in the call. Versions 12.2.8, 13.0.10, 14.0.6, and 15.0.0 contain patches for the issue. No known workarounds are available. • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wx6w-xpg9-6fv4 https://github.com/nextcloud/spreed/pull/7974 https://hackerone.com/reports/1706248 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-359: Exposure of Private Personal Information to an Unauthorized Actor CWE-668: Exposure of Resource to Wrong Sphere •