USN-4265-1 fixed several vulnerabilities in SpamAssassin. This update provides the corresponding update for Ubuntu 12.04 ESM and 14.04 ESM.
Original advisory details:
It was discovered that SpamAssassin incorrectly handled certain CF files. If a user or automated system were tricked into using a specially-crafted CF file, a remote attacker could possibly run arbitrary code.
{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "3.4.2-0ubuntu0.14.04.1+esm2",
            "binary_name": "sa-compile"
        },
        {
            "binary_version": "3.4.2-0ubuntu0.14.04.1+esm2",
            "binary_name": "spamassassin"
        },
        {
            "binary_version": "3.4.2-0ubuntu0.14.04.1+esm2",
            "binary_name": "spamc"
        }
    ]
}
          {
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2020-1930"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2020-1931"
        }
    ],
    "ecosystem": "Ubuntu:Pro:14.04:LTS"
}