ESB-2019.0234.2 - UPDATE [UNIX/Linux][Debian] coturn: Multiple vulnerabilities 2019-02-12

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             AUSCERT External Security Bulletin Redistribution

                              ESB-2019.0234.2
                          coturn security update
                             12 February 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           coturn
Publisher:         Debian
Operating System:  Debian GNU/Linux 9
                   Debian GNU/Linux 8
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Increased Privileges            -- Existing Account      
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-4059 CVE-2018-4058 CVE-2018-4056

Original Bulletin: 
   http://www.debian.org/security/2019/dsa-4373
   https://lists.debian.org/debian-lts-announce/2019/02/msg00017.html

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.
         
         This bulletin contains two (2) advisories.

Revision History:  February 12 2019: DLA 1671-1 added support for Debian 8
                   January  29 2019: Initial Release

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- - -------------------------------------------------------------------------
Debian Security Advisory DSA-4373-1                   security@debian.org
https://www.debian.org/security/                        Yves-Alexis Perez
January 28, 2019                      https://www.debian.org/security/faq
- - -------------------------------------------------------------------------

Package        : coturn
CVE ID         : CVE-2018-4056 CVE-2018-4058 CVE-2018-4059

Multiple vulnerabilities were discovered in coTURN, a TURN and STUN server for
VoIP.

CVE-2018-4056

    An SQL injection vulnerability was discovered in the coTURN administrator
    web portal. As the administration web interface is shared with the
    production, it is unfortunately not possible to easily filter outside
    access and this security update completely disable the web interface. Users
    should use the local, command line interface instead.

CVE-2018-4058

    Default configuration enables unsafe loopback forwarding. A remote attacker
    with access to the TURN interface can use this vulnerability to gain access
    to services that should be local only.

CVE-2018-4059

    Default configuration uses an empty password for the local command line
    administration interface. An attacker with access to the local console
    (either a local attacker or a remote attacker taking advantage of
    CVE-2018-4058) could escalade privileges to administrator of the coTURN
    server.

For the stable distribution (stretch), these problems have been fixed in
version 4.5.0.5-1+deb9u1.

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/

- --------------------------------------------------------------------------------

Package        : coturn
Version        : 4.2.1.2-1+deb8u1
CVE ID         : CVE-2018-4056 CVE-2018-4058 CVE-2018-4059

Multiple vulnerabilities were discovered in coTURN, a TURN and STUN server for
VoIP.

CVE-2018-4056

    An SQL injection vulnerability was discovered in the coTURN administrator
    web portal. As the administration web interface is shared with the
    production, it is unfortunately not possible to easily filter outside
    access and this security update completely disables the web interface. Users
    should use the local, command line interface instead.

CVE-2018-4058

    Default configuration enables unsafe loopback forwarding. A remote attacker
    with access to the TURN interface can use this vulnerability to gain access
    to services that should be local only.

CVE-2018-4059

    Default configuration uses an empty password for the local command line
    administration interface. An attacker with access to the local console
    (either a local attacker or a remote attacker taking advantage of
    CVE-2018-4058) could escalade privileges to administrator of the coTURN
    server.

For Debian 8 "Jessie", these problems have been fixed in version
4.2.1.2-1+deb8u1.

We recommend that you upgrade your coturn packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

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