Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2021.0098
coturn security update
12 January 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: coturn
Publisher: Debian
Operating System: Debian GNU/Linux
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-26262
Original Bulletin:
http://www.debian.org/security/2021/dsa-4829
Comment: This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running coturn check for an updated version of the software for
their operating system.
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Debian Security Advisory DSA-4829-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
January 11, 2021 https://www.debian.org/security/faq
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Package : coturn
CVE ID : CVE-2020-26262
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
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
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