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Ubuntu Security Notice USN-4360-3

Ubuntu Security Notice USN-4360-3
Posted May 15, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4360-3 - 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. It was discovered that json-c incorrectly handled certain JSON files. An attacker could possibly use this issue to execute arbitrary code. Various other issues were also addressed.

tags | advisory, arbitrary, memory leak
systems | linux, ubuntu
MD5 | 63687d75a84d4a9bd30c0a37bbf17d67

Ubuntu Security Notice USN-4360-3

Change Mirror Download
=========================================================================
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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