Ubuntu Security Notice USN-2245-1
12th June, 2014
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 LTS
- Ubuntu 13.10
- Ubuntu 12.04 LTS
json-c could be made to crash or consume CPU if it processed a specially crafted JSON document.
- json-c - JSON manipulation library
Florian Weimer discovered that json-c incorrectly handled buffer lengths.
An attacker could use this issue with a specially-crafted large JSON
document to cause json-c to crash, resulting in a denial of service.
Florian Weimer discovered that json-c incorrectly handled hash arrays. An
attacker could use this issue with a specially-crafted JSON document to
cause json-c to consume CPU resources, resulting in a denial of service.
The problem can be corrected by updating your system to the following package version:
- Ubuntu 14.04 LTS:
- libjson0 0.11-3ubuntu1.2
- Ubuntu 13.10:
- libjson0 0.11-2ubuntu1.2
- Ubuntu 12.04 LTS:
- libjson0 0.9-1ubuntu1.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.