ESB-2018.2937 - [Win][UNIX/Linux][Debian] mosquitto: Multiple vulnerabilities 2018-10-01

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2937
             SECURITY] [DLA 1525-1] mosquitto security update
                              1 October 2018

===========================================================================

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

Product:           mosquitto
Publisher:         Debian
Operating System:  Debian GNU/Linux 8
                   UNIX variants (UNIX, Linux, OSX)
                   Windows
Impact/Access:     Denial of Service        -- Remote/Unauthenticated
                   Access Confidential Data -- Existing Account      
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-9868 CVE-2017-7654 CVE-2017-7653

Original Bulletin: 
   https://lists.debian.org/debian-lts-announce/2018/09/msg00036.html

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Debian. It is recommended that administrators 
         running mosquitto check for an updated version of the software for 
         their operating system.

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Package        : mosquitto
Version        : 1.3.4-2+deb8u3
CVE ID         : CVE-2017-7653 CVE-2017-7654 CVE-2017-9868


CVE-2017-7653

     As invalid UTF-8 strings are not correctly checked, an attacker could
     cause a denial of service to other clients by disconnecting
     them from the broker with special crafted topics.


CVE-2017-7654

     Due to a memory leak unauthenticated clients can send special crafted
     CONNECT packets which could cause a denial of service in the broker.


CVE-2017-9868

     Due to wrong file permissions local users could obtain topic
     information from the mosquitto database.


For Debian 8 "Jessie", these problems have been fixed in version
1.3.4-2+deb8u3.

We recommend that you upgrade your mosquitto 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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