{"id":"USN-5689-1","summary":"perl vulnerability","details":"It was discovered that Perl incorrectly handled certain signature verification.\nAn remote attacker could possibly use this issue to bypass signature verification.\n","modified":"2026-06-29T13:49:25.796004007Z","published":"2022-10-19T11:10:27Z","related":["UBUNTU-CVE-2020-16156"],"upstream":["CVE-2020-16156","UBUNTU-CVE-2020-16156"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5689-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-16156"}],"affected":[{"package":{"name":"perl","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/perl?arch=source&distro=trusty%2Fesm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.2-2ubuntu1.7+esm4"}]}],"versions":["5.14.2-21build1","5.18.1-4","5.18.1-4build1","5.18.1-5","5.18.2-2","5.18.2-2ubuntu1","5.18.2-2ubuntu1.1","5.18.2-2ubuntu1.3","5.18.2-2ubuntu1.4","5.18.2-2ubuntu1.6","5.18.2-2ubuntu1.7","5.18.2-2ubuntu1.7+esm3"],"ecosystem_specific":{"binaries":[{"binary_version":"5.18.2-2ubuntu1.7+esm4","binary_name":"libcgi-fast-perl"},{"binary_name":"libperl5.18","binary_version":"5.18.2-2ubuntu1.7+esm4"},{"binary_version":"5.18.2-2ubuntu1.7+esm4","binary_name":"perl"},{"binary_name":"perl-base","binary_version":"5.18.2-2ubuntu1.7+esm4"},{"binary_name":"perl-debug","binary_version":"5.18.2-2ubuntu1.7+esm4"},{"binary_name":"perl-modules","binary_version":"5.18.2-2ubuntu1.7+esm4"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:14.04:LTS","cves":[{"id":"CVE-2020-16156","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5689-1.json"}},{"package":{"name":"perl","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/perl?arch=source&distro=esm-infra%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.22.1-9ubuntu0.9+esm1"}]}],"versions":["5.20.2-6","5.22.1-3","5.22.1-4","5.22.1-5","5.22.1-7","5.22.1-8","5.22.1-9","5.22.1-9ubuntu0.2","5.22.1-9ubuntu0.3","5.22.1-9ubuntu0.5","5.22.1-9ubuntu0.6","5.22.1-9ubuntu0.9"],"ecosystem_specific":{"binaries":[{"binary_name":"libperl5.22","binary_version":"5.22.1-9ubuntu0.9+esm1"},{"binary_name":"perl","binary_version":"5.22.1-9ubuntu0.9+esm1"},{"binary_version":"5.22.1-9ubuntu0.9+esm1","binary_name":"perl-base"},{"binary_version":"5.22.1-9ubuntu0.9+esm1","binary_name":"perl-debug"},{"binary_name":"perl-modules-5.22","binary_version":"5.22.1-9ubuntu0.9+esm1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"id":"CVE-2020-16156","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5689-1.json"}},{"package":{"name":"perl","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/perl?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.26.1-6ubuntu0.6"}]}],"versions":["5.26.0-8ubuntu1","5.26.1-2ubuntu1","5.26.1-3","5.26.1-4","5.26.1-4build1","5.26.1-5","5.26.1-6","5.26.1-6ubuntu0.1","5.26.1-6ubuntu0.2","5.26.1-6ubuntu0.3","5.26.1-6ubuntu0.5"],"ecosystem_specific":{"binaries":[{"binary_name":"libperl5.26","binary_version":"5.26.1-6ubuntu0.6"},{"binary_version":"5.26.1-6ubuntu0.6","binary_name":"perl"},{"binary_name":"perl-base","binary_version":"5.26.1-6ubuntu0.6"},{"binary_name":"perl-debug","binary_version":"5.26.1-6ubuntu0.6"},{"binary_version":"5.26.1-6ubuntu0.6","binary_name":"perl-modules-5.26"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:18.04:LTS","cves":[{"id":"CVE-2020-16156","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5689-1.json"}},{"package":{"name":"perl","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/perl?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.30.0-9ubuntu0.3"}]}],"versions":["5.28.1-6build1","5.30.0-7","5.30.0-9","5.30.0-9build1","5.30.0-9ubuntu0.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libperl5.30","binary_version":"5.30.0-9ubuntu0.3"},{"binary_name":"perl","binary_version":"5.30.0-9ubuntu0.3"},{"binary_version":"5.30.0-9ubuntu0.3","binary_name":"perl-base"},{"binary_name":"perl-debug","binary_version":"5.30.0-9ubuntu0.3"},{"binary_version":"5.30.0-9ubuntu0.3","binary_name":"perl-modules-5.30"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:20.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2020-16156"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5689-1.json"}},{"package":{"name":"perl","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/perl?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.34.0-3ubuntu1.1"}]}],"versions":["5.32.1-3ubuntu3","5.34.0-3ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"libperl5.34","binary_version":"5.34.0-3ubuntu1.1"},{"binary_name":"perl","binary_version":"5.34.0-3ubuntu1.1"},{"binary_name":"perl-base","binary_version":"5.34.0-3ubuntu1.1"},{"binary_name":"perl-debug","binary_version":"5.34.0-3ubuntu1.1"},{"binary_name":"perl-modules-5.34","binary_version":"5.34.0-3ubuntu1.1"}],"availability":"No 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