Debian Security Advisory
DSA-4829-1 coturn -- security update
- Date Reported:
- 11 Jan 2021
- Affected Packages:
- Security database references:
- In Mitre's CVE dictionary: CVE-2020-26262.
- More information:
A flaw was discovered in coturn, a TURN and STUN server for VoIP. By default coturn does not allow peers on the loopback addresses (127.x.x.x and ::1). A remote attacker can bypass the protection via a specially crafted request using a peer address of
0.0.0.0and trick coturn in relaying to the loopback interface. If listening on IPv6 the loopback interface can also be reached by using either [::1] or [::] as the address.
For the stable distribution (buster), this problem has been fixed in version 18.104.22.168-1.1+deb10u2.
We recommend that you upgrade your coturn packages.
For the detailed security status of coturn please refer to its security tracker page at: https://security-tracker.debian.org/tracker/coturn