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.
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "binaries": [ { "binary_version": "0.11-3ubuntu1.2+esm3", "binary_name": "libjson-c-dev" }, { "binary_version": "0.11-3ubuntu1.2+esm3", "binary_name": "libjson-c2" }, { "binary_version": "0.11-3ubuntu1.2+esm3", "binary_name": "libjson0" }, { "binary_version": "0.11-3ubuntu1.2+esm3", "binary_name": "libjson0-dev" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_version": "0.11-4ubuntu2.6", "binary_name": "libjson-c-dev" }, { "binary_version": "0.11-4ubuntu2.6", "binary_name": "libjson-c2" }, { "binary_version": "0.11-4ubuntu2.6", "binary_name": "libjson0" }, { "binary_version": "0.11-4ubuntu2.6", "binary_name": "libjson0-dev" } ] }