{"id":"UBUNTU-CVE-2021-33589","details":"Ribose RNP before 0.15.1 does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than on the tin of the algorithm.","modified":"2026-05-20T16:05:01.858524845Z","published":"2023-04-21T12:15:00Z","upstream":["CVE-2021-33589"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-33589"},{"type":"REPORT","url":"https://www.ribose.com/feedback/security"},{"type":"REPORT","url":"https://open.ribose.com/advisories/ra-2021-05-30/#CVE-2021-33589"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-33589"}],"affected":[{"package":{"name":"rnp","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/rnp?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.14.0-6","0.15.2-6build1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.15.2-6build1","binary_name":"librnp0"},{"binary_name":"rnp","binary_version":"0.15.2-6build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33589.json"}},{"package":{"name":"rnp","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/rnp?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.17.0-3"],"ecosystem_specific":{"binaries":[{"binary_name":"librnp0","binary_version":"0.17.0-3"},{"binary_name":"rnp","binary_version":"0.17.0-3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33589.json"}},{"package":{"name":"rnp","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/rnp?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.17.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"librnp0","binary_version":"0.17.1-1"},{"binary_name":"rnp","binary_version":"0.17.1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33589.json"}},{"package":{"name":"rnp","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/rnp?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.17.1-1","0.18.0-4","0.18.1-1","0.18.1-1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.18.1-1build1","binary_name":"librnp0"},{"binary_name":"rnp","binary_version":"0.18.1-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33589.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}