USN-2902-1: graphite2 vulnerabilities

USN-2902-1: graphite2 vulnerabilities

Ubuntu Security Notice USN-2902-1

17th February, 2016

graphite2 vulnerabilities

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

• Ubuntu 15.10
• Ubuntu 14.04 LTS

Summary

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

Software description

• graphite2
  – Font rendering engine for Complex Scripts

Details

Yves Younan 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 15.10:

libgraphite2-3

1.2.4-3ubuntu1.1

Ubuntu 14.04 LTS:

libgraphite2-3

1.2.4-1ubuntu1.1

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

After a standard system update you need to restart applications using
graphite2, such as LibreOffice, to make all the necessary changes.

References

CVE-2016-1521,

CVE-2016-1522,

CVE-2016-1523,

CVE-2016-1526

Source: USN-2902-1: graphite2 vulnerabilities