Security Information / 2021 / Security Information -- DSA-4829-1 coturn

Debian Security Advisory

DSA-4829-1 coturn -- security update

Date Reported:

11 Jan 2021

Affected Packages:

coturn

Vulnerable:

Yes

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 0.0.0.0 and 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 4.5.1.1-1.1+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