========================================================================= Ubuntu Security Notice USN-4360-4 May 28, 2020 json-c vulnerability ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 19.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 ESM - Ubuntu 12.04 ESM Summary: json-c could be made to execute arbitrary code if it received a specially crafted JSON file. Software Description: - json-c: JSON manipulation library Details: USN-4360-1 fixed a vulnerability in json-c. The security fix introduced a memory leak that was reverted in USN-4360-2 and USN-4360-3. This update provides the correct fix update for CVE-2020-12762. 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 20.04 LTS: libjson-c4 0.13.1+dfsg-7ubuntu0.3 Ubuntu 19.10: libjson-c4 0.13.1+dfsg-4ubuntu0.3 Ubuntu 18.04 LTS: libjson-c3 0.12.1-1.3ubuntu0.3 Ubuntu 16.04 LTS: libjson-c2 0.11-4ubuntu2.6 libjson0 0.11-4ubuntu2.6 Ubuntu 14.04 ESM: libjson-c2 0.11-3ubuntu1.2+esm3 libjson0 0.11-3ubuntu1.2+esm3 Ubuntu 12.04 ESM: libjson0 0.9-1ubuntu1.4 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/4360-4 https://usn.ubuntu.com/4360-1 CVE-2020-12762 Package Information: https://launchpad.net/ubuntu/+source/json-c/0.13.1+dfsg-7ubuntu0.3 https://launchpad.net/ubuntu/+source/json-c/0.13.1+dfsg-4ubuntu0.3 https://launchpad.net/ubuntu/+source/json-c/0.12.1-1.3ubuntu0.3 https://launchpad.net/ubuntu/+source/json-c/0.11-4ubuntu2.6