coturn is vulnerable to information disclosure. The STUN/TURN response buffer is not initialized properly and causes a leak of information between different client connections. An attacker is able to use their connection to intelligently query coturn to get interesting bytes in the padding bytes from the connection of another client.
lists.opensuse.org/opensuse-security-announce/2020-07/msg00010.html
github.com/coturn/coturn/blob/aab60340b201d55c007bcdc853230f47aa2dfdf1/ChangeLog#L15
github.com/coturn/coturn/issues/583
github.com/coturn/coturn/security/advisories/GHSA-c8r8-8vp5-6gcm
lists.debian.org/debian-lts-announce/2020/07/msg00002.html
lists.fedoraproject.org/archives/list/[email protected]/message/5G35UBNSRLL6SYRTODYTMBJ65TLQILUM/
lists.fedoraproject.org/archives/list/[email protected]/message/TNJJO77ZLGGFJWNUGP6VDG5HPAC5UDBK/
usn.ubuntu.com/4415-1/
www.debian.org/security/2020/dsa-4711