ESB-2017.2096 - [Ubuntu] libgraphite2-3: Multiple vulnerabilities 2017-08-22

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2096
                         graphite2 vulnerabilities
                              22 August 2017

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

Product:           libgraphite2-3
Publisher:         Ubuntu
Operating System:  Ubuntu
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Access Privileged Data          -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-7778 CVE-2017-7777 CVE-2017-7776
                   CVE-2017-7775 CVE-2017-7774 CVE-2017-7773
                   CVE-2017-7772 CVE-2017-7771 

Reference:         ASB-2017.0091
                   ESB-2017.1825
                   ESB-2017.1807
                   ESB-2017.1683

Original Bulletin: 
   http://www.ubuntu.com/usn/usn-3398-1

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USN-3398-1: graphite2 vulnerabilities
Ubuntu Security Notice USN-3398-1
21st August, 2017

graphite2 vulnerabilities

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

Ubuntu 17.04
Ubuntu 16.04 LTS
Ubuntu 14.04 LTS
Summary

graphite2 could be made to crash or run programs if it opened a specially crafted font.

Software description

graphite2 - Font rendering engine for Complex Scripts
Details

Holger Fuhrmannek and Tyson Smith discovered that graphite2 incorrectly
handled certain malformed fonts. If a user or automated system were tricked
into opening a specially-crafted font file, a remote attacker could use
this issue to cause graphite2 to crash, resulting in a denial of service,
or possibly execute arbitrary code.

Update instructions

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

Ubuntu 17.04:
libgraphite2-3 1.3.10-0ubuntu0.17.04.1
Ubuntu 16.04 LTS:
libgraphite2-3 1.3.10-0ubuntu0.16.04.1
Ubuntu 14.04 LTS:
libgraphite2-3 1.3.10-0ubuntu0.14.04.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart applications
using graphite2, such as LibreOffice, to make all the necessary changes.

References

CVE-2017-7771, CVE-2017-7772, CVE-2017-7773, CVE-2017-7774, CVE-2017-7775, CVE-2017-7776, CVE-2017-7777, CVE-2017-7778

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