USN-3398-1: graphite2 vulnerabilities

Releases

• Ubuntu 17.04
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

• 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

• libgraphite2-3 - 1.3.10-0ubuntu0.16.04.1

Ubuntu 14.04

• 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

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

Related notices

• USN-3315-1
• USN-3321-1