ESB-2017.2070 - [Linux][Ubuntu] libmspack: Multiple vulnerabilities 2017-08-18

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2070
                         libmspack vulnerabilities
                              18 August 2017

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

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

Product:           libmspack
Publisher:         Ubuntu
Operating System:  Ubuntu
                   Linux variants
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
                   Denial of Service               -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-11423 CVE-2017-6419 

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3394-1

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

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==========================================================================
Ubuntu Security Notice USN-3394-1
August 17, 2017

libmspack vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- - Ubuntu 17.04
- - Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in libmspack.

Software Description:
- - libmspack: library for Microsoft compression formats

Details:

It was discovered that libmspack incorrectly handled certain malformed CHM
files. A remote attacker could use this issue to cause libmspack to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2017-6419)

It was discovered that libmspack incorrectly handled certain malformed CAB
files. A remote attacker could use this issue to cause libmspack to crash,
resulting in a denial of service. (CVE-2017-6419)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 17.04:
  libmspack0                      0.5-1ubuntu0.17.04.1

Ubuntu 16.04 LTS:
  libmspack0                      0.5-1ubuntu0.16.04.1

In general, a standard system update will make all the necessary changes.

References:
  https://www.ubuntu.com/usn/usn-3394-1
  CVE-2017-11423, CVE-2017-6419

Package Information:
  https://launchpad.net/ubuntu/+source/libmspack/0.5-1ubuntu0.17.04.1
  https://launchpad.net/ubuntu/+source/libmspack/0.5-1ubuntu0.16.04.1

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