[USN-4360-3] json-c regression

[Leonidas S. Barbosa]

==========================================================================
Ubuntu Security Notice USN-4360-3
May 15, 2020

json-c regression
==========================================================================

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

- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM

Summary:

USN-4360-1 introduced a regression in json-c.

Software Description:
- json-c: JSON manipulation library

Details:

USN-4360-1 fixed a vulnerability in json-c. The security fix introduced
a memory leak in some scenarios. This update reverts the security fix
pending further investigation.

We apologize for the inconvenience.

Original advisory details:

 It was discovered that json-c incorrectly handled certain JSON files.
 An attacker could possibly use this issue to execute arbitrary code.

Update instructions:

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

Ubuntu 14.04 ESM:
  libjson-c2                      0.11-3ubuntu1.2+esm2
  libjson0                        0.11-3ubuntu1.2+esm2

Ubuntu 12.04 ESM:
  libjson0                        0.9-1ubuntu1.3

In general, a standard system update will make all the necessary changes.

References:
  https://usn.ubuntu.com/4360-3
  https://usn.ubuntu.com/4360-1
  https://launchpad.net/bugs/1878723
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