{"id":"USN-4745-1","summary":"openssl vulnerabilities","details":"David Benjamin discovered that OpenSSL incorrectly handled comparing\ncertificates containing a EDIPartyName name type. A remote attacker could\npossibly use this issue to cause OpenSSL to crash, resulting in a denial of\nservice. (CVE-2020-1971)\n\nTavis Ormandy discovered that OpenSSL incorrectly handled parsing issuer\nfields. A remote attacker could possibly use this issue to cause OpenSSL to\ncrash, resulting in a denial of service. (CVE-2021-23841)\n","modified":"2026-04-22T10:23:20.011880Z","published":"2021-02-23T19:33:18Z","related":["UBUNTU-CVE-2020-1971","UBUNTU-CVE-2021-23841"],"upstream":["CVE-2020-1971","CVE-2021-23841","UBUNTU-CVE-2020-1971","UBUNTU-CVE-2021-23841"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4745-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-1971"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-23841"}],"affected":[{"package":{"name":"openssl","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/openssl@1.0.1f-1ubuntu2.27+esm2?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.1f-1ubuntu2.27+esm2"}]}],"versions":["1.0.1e-3ubuntu1","1.0.1e-4ubuntu1","1.0.1e-4ubuntu2","1.0.1e-4ubuntu3","1.0.1e-4ubuntu4","1.0.1f-1ubuntu1","1.0.1f-1ubuntu2","1.0.1f-1ubuntu2.1","1.0.1f-1ubuntu2.2","1.0.1f-1ubuntu2.3","1.0.1f-1ubuntu2.4","1.0.1f-1ubuntu2.5","1.0.1f-1ubuntu2.7","1.0.1f-1ubuntu2.8","1.0.1f-1ubuntu2.11","1.0.1f-1ubuntu2.12","1.0.1f-1ubuntu2.15","1.0.1f-1ubuntu2.16","1.0.1f-1ubuntu2.17","1.0.1f-1ubuntu2.18","1.0.1f-1ubuntu2.19","1.0.1f-1ubuntu2.20","1.0.1f-1ubuntu2.21","1.0.1f-1ubuntu2.22","1.0.1f-1ubuntu2.23","1.0.1f-1ubuntu2.24","1.0.1f-1ubuntu2.25","1.0.1f-1ubuntu2.26","1.0.1f-1ubuntu2.27","1.0.1f-1ubuntu2.27+esm1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"libssl1.0.0","binary_version":"1.0.1f-1ubuntu2.27+esm2"},{"binary_name":"openssl","binary_version":"1.0.1f-1ubuntu2.27+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4745-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:14.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"high"}],"id":"CVE-2020-1971"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2021-23841"}]}}}],"schema_version":"1.7.5"}