json-c vulnerabilities

12 June 2014

json-c vulnerabilities

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

• Ubuntu 14.04 LTS
• Ubuntu 13.10
• Ubuntu 12.04 LTS

Summary

json-c could be made to crash or consume CPU if it processed a specially crafted JSON document.

Software Description

• json-c - JSON manipulation library

Details

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. (CVE-2013-6370)

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. (CVE-2013-6371)

Update instructions

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

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.

References

• CVE-2013-6370
• CVE-2013-6371