Ubuntu 4360-4: json-c vulnerability

    Date 28 May 2020
    163
    Posted By LinuxSecurity Advisories
    json-c could be made to execute arbitrary code if it received a specially crafted JSON file.
    ==========================================================================
    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
    

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