CVE-2020-4067

In coturn before version 4.5.1.3, there is an issue whereby STUN/TURN response buffer is not initialized properly. There is a leak of information between different client connections. One client (an attacker) could use their connection to intelligently query coturn to get interesting bytes in the padding bytes from the connection of another client. This has been fixed in 4.5.1.3.

• CWE-665
• CWE-665

• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00010.htmlMailing List, Third Party Advisory
• https://github.com/coturn/coturn/blob/aab60340b201d55c007bcdc853230f47aa2dfdf1/ChangeLog#L15Release Notes
• https://github.com/coturn/coturn/issues/583Issue Tracking, Third Party Advisory
• https://github.com/coturn/coturn/security/advisories/GHSA-c8r8-8vp5-6gcmThird Party Advisory
• https://lists.debian.org/debian-lts-announce/2020/07/msg00002.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5G35UBNSRLL6SYRTODYTMBJ65TLQILUM/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNJJO77ZLGGFJWNUGP6VDG5HPAC5UDBK/
• https://usn.ubuntu.com/4415-1/Third Party Advisory
• https://www.debian.org/security/2020/dsa-4711Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00010.htmlMailing List, Third Party Advisory
• https://github.com/coturn/coturn/blob/aab60340b201d55c007bcdc853230f47aa2dfdf1/ChangeLog#L15Release Notes
• https://github.com/coturn/coturn/issues/583Issue Tracking, Third Party Advisory
• https://github.com/coturn/coturn/security/advisories/GHSA-c8r8-8vp5-6gcmThird Party Advisory
• https://lists.debian.org/debian-lts-announce/2020/07/msg00002.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5G35UBNSRLL6SYRTODYTMBJ65TLQILUM/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNJJO77ZLGGFJWNUGP6VDG5HPAC5UDBK/
• https://usn.ubuntu.com/4415-1/Third Party Advisory
• https://www.debian.org/security/2020/dsa-4711Third Party Advisory

Published

Jun 29, 2020

Last Modified

Jun 17, 2026

Status

Modified

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