CVSS: 7.2EPSS: 0%CPEs: 3EXPL: 1CVE-2020-26262 – Loopback bypass in Coturn
https://notcve.org/view.php?id=CVE-2020-26262
Coturn is free open source implementation of TURN and STUN Server. Coturn before version 4.5.2 by default does not allow peers to connect and relay packets to loopback addresses in the range of `127.x.x.x`. However, it was observed that when sending a `CONNECT` request with the `XOR-PEER-ADDRESS` value of `0.0.0.0`, a successful response was received and subsequently, `CONNECTIONBIND` also received a successful response. Coturn then is able to relay packets to the loopback interface. Additionally, when coturn is listening on IPv6, which is default, the loopback interface can also be reached by making use of either `[::1]` or `[::]` as the peer address. • https://github.com/coturn/coturn/blob/57180ab60afcaeb13537e69ae8cb8aefd8f3f546/ChangeLog#L48 https://github.com/coturn/coturn/commit/abfe1fd08d78baa0947d17dac0f7411c3d948e4d https://github.com/coturn/coturn/security/advisories/GHSA-6g6j-r9rf-cm7p https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G54UIUFTEC6RLPOISMB6FUW7456SBZC4 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M4CJOPAQT43MYAFU3UROGLEXN3Z6RS4H • CWE-441: Unintended Proxy or Intermediary ('Confused Deputy') CWE-682: Incorrect Calculation •
CVSS: 7.5EPSS: 0%CPEs: 11EXPL: 0CVE-2020-4067 – Improper Initialization in coturn
https://notcve.org/view.php?id=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. En coturn anterior a la versión 4.5.1.3, se presenta un problema por el cual el búfer de respuesta STUN/TURN no se inicializa apropiadamente. • http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00010.html https://github.com/coturn/coturn/blob/aab60340b201d55c007bcdc853230f47aa2dfdf1/ChangeLog#L15 https://github.com/coturn/coturn/issues/583 https://github.com/coturn/coturn/security/advisories/GHSA-c8r8-8vp5-6gcm https://lists.debian.org/debian-lts-announce/2020/07/msg00002.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5G35UBNSRLL6SYRTODYTMBJ65TLQILUM https://lists.fedoraproject.org/archives/list/p • CWE-665: Improper Initialization •
CVSS: 9.8EPSS: 0%CPEs: 10EXPL: 1CVE-2020-6061
https://notcve.org/view.php?id=CVE-2020-6061
An exploitable heap out-of-bounds read vulnerability exists in the way CoTURN 4.5.1.1 web server parses POST requests. A specially crafted HTTP POST request can lead to information leaks and other misbehavior. An attacker needs to send an HTTPS request to trigger this vulnerability. Existe una vulnerabilidad explotable de lectura fuera de límites en la forma en que el servidor web CoTURN 4.5.1.1 analiza las solicitudes POST. Una solicitud HTTP POST especialmente diseñada puede provocar fugas de información y otros comportamientos incorrectos. • https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HQZZPI34LAS3SFNW6Z2ZJ46RKVGEODNA https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OUVZRXW5ZIGWVKOLF3NPXRPP74YX7BUY https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XN2NK6FT7AMW5UIZNXDNHKEAYWAUMGSF https://talosintelligence.com/vulnerability_reports/TALOS-2020-0984 https://usn.ubuntu.com/4415-1 https://www.debian.org/security/2020/dsa-4711 • CWE-125: Out-of-bounds Read •
CVSS: 7.5EPSS: 2%CPEs: 10EXPL: 1CVE-2020-6062
https://notcve.org/view.php?id=CVE-2020-6062
An exploitable denial-of-service vulnerability exists in the way CoTURN 4.5.1.1 web server parses POST requests. A specially crafted HTTP POST request can lead to server crash and denial of service. An attacker needs to send an HTTP request to trigger this vulnerability. Se presenta una vulnerabilidad de denegación de servicio explotable en la manera en que el servidor web CoTURN versión 4.5.1.1 analiza las peticiones POST. Una petición HTTP POST especialmente diseñada puede conllevar a un bloqueo del servidor y una denegación de servicio. • https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HQZZPI34LAS3SFNW6Z2ZJ46RKVGEODNA https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OUVZRXW5ZIGWVKOLF3NPXRPP74YX7BUY https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XN2NK6FT7AMW5UIZNXDNHKEAYWAUMGSF https://talosintelligence.com/vulnerability_reports/TALOS-2020-0985 https://usn.ubuntu.com/4415-1 https://www.debian.org/security/2020/dsa-4711 • CWE-476: NULL Pointer Dereference •