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Ubuntu Security Notice USN-3398-1
August 21, 2017

graphite2 vulnerabilities
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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 versions:

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

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:
https://www.ubuntu.com/usn/usn-3398-1
CVE-2017-7771, CVE-2017-7772, CVE-2017-7773, CVE-2017-7774,
CVE-2017-7775, CVE-2017-7776, CVE-2017-7777, CVE-2017-7778

Package Information:
https://launchpad.net/ubuntu/+source/graphite2/1.3.10-0ubuntu0.17.04.1
https://launchpad.net/ubuntu/+source/graphite2/1.3.10-0ubuntu0.16.04.1
https://launchpad.net/ubuntu/+source/graphite2/1.3.10-0ubuntu0.14.04.1

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