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Ubuntu 16.04 LTS, 14.04 LTS: USN-3067-1 HarfBuzz DoS Threat

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Calendar Grey August 24, 2016
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Stay informed about recent HarfBuzz vulnerabilities on Ubuntu that could enable DoS attacks or unauthorized program execution and take action accordingly
HarfBuzz could be made to crash or run programs as your login if it processed specially crafted data.

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)

Topics%20covered

Topics Covered

security advisory denial of service ubuntu program execution harfbuzz

Update Instructions

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

Ubuntu 16.04 LTS:
  libharfbuzz0b                   1.0.1-1ubuntu0.1

Ubuntu 14.04 LTS:
  libharfbuzz0b                   0.9.27-1ubuntu1.1

After a standard system update you need to restart your session to make
all the necessary changes.

References

https://ubuntu.com/security/notices/USN-3067-1

CVE-2015-8947, CVE-2016-2052

Severity
critical
Lowest
Low
Medium
High
Critical

August 24, 2016

Topics%20covered

Topics Covered

security advisory denial of service ubuntu program execution harfbuzz

Package Information

https://launchpad.net/ubuntu/+source/harfbuzz/1.0.1-1ubuntu0.1
https://launchpad.net/ubuntu/+source/harfbuzz/0.9.27-1ubuntu1.1

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