Jenkins Plugin Installation Manager Tool 2.1.3 and earlier does not verify plugin downloads. References https://nvd.nist.gov/vuln/detail/CVE-2020-2320 https://www.jenkins.io/security/advisory/2020-12-03/#SECURITY-1856 http://www.openwall.com/lists/oss-security/2020/12/03/2 https://github.com/advisories/GHSA-m8r4-c7jm-w782
