ESB-2018.2245 - [Linux][Ubuntu] libmspack: Multiple vulnerabilities 2018-08-02

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2245
                         libmspack vulnerabilities
                               2 August 2018

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

Product:           libmspack
Publisher:         Ubuntu
Operating System:  Ubuntu
                   Linux variants
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
                   Denial of Service               -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-14682 CVE-2018-14681 CVE-2018-14680
                   CVE-2018-14679  

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3728-1

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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USN-3728-1: libmspack vulnerabilities

1 August 2018

libmspack vulnerabilities

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

Ubuntu 18.04 LTS

Ubuntu 16.04 LTS

Summary

Several security issues were fixed in libmspack.

Software Description

libmspack - library for Microsoft compression formats

Details

Hanno Bck discovered that libmspack incorrectly handled certain CHM files. An
attacker could possibly use this issue to cause a denial of service. 
(CVE-2018-14679, CVE-2018-14680)

Jakub Wilk discovered that libmspack incorrectly handled certain KWAJ files. 
An attacker could possibly use this issue to execute arbitrary code. 
(CVE-2018-14681)

Dmitry Glavatskikh discovered that libmspack incorrectly certain CHM files. An
attacker could possibly use this issue to execute arbitrary code. 
(CVE-2018-14682)

Update instructions

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

Ubuntu 18.04 LTS

libmspack0 - 0.6-3ubuntu0.1

Ubuntu 16.04 LTS

libmspack0 - 0.5-1ubuntu0.16.04.2

To update your system, please follow these instructions: 
https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2018-14679

CVE-2018-14680

CVE-2018-14681

CVE-2018-14682

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