USN-3067-1: HarfBuzz vulnerabilities
Ubuntu Security Notice USN-3067-1
24th August, 2016
harfbuzz vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary
HarfBuzz could be made to crash or run programs as your login if it
processed specially crafted data.
Software description
- harfbuzz
– OpenType text shaping engine
Details
Kostya Serebryany discovered that HarfBuzz incorrectly handled memory. A
remote attacker could use this issue to cause HarfBuzz to crash, resulting
in a denial of service, or possibly execute arbitrary code. (CVE-2015-8947)
It was discovered that HarfBuzz incorrectly handled certain length checks.
A remote attacker could use this issue to cause HarfBuzz to crash,
resulting in a denial of service, or possibly execute arbitrary code.
This issue only applied to Ubuntu 16.04 LTS. (CVE-2016-2052)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 16.04 LTS:
-
libharfbuzz0b
1.0.1-1ubuntu0.1
- Ubuntu 14.04 LTS:
-
libharfbuzz0b
0.9.27-1ubuntu1.1
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart your session to make
all the necessary changes.
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