USN-2245-1: json-c vulnerabilities

Ubuntu Security Notice USN-2245-1

12th 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 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.

References

CVE-2013-6370, CVE-2013-6371