{"id":"UBUNTU-CVE-2021-24115","details":"In Botan before 2.17.3, constant-time computations are not used for certain decoding and encoding operations (base32, base58, base64, and hex).","modified":"2026-04-22T12:48:55.056301Z","published":"2021-02-22T02:15:00Z","upstream":["CVE-2021-24115"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-24115"},{"type":"REPORT","url":"https://github.com/randombit/botan/pull/2549"},{"type":"REPORT","url":"https://botan.randombit.net/news.html"},{"type":"REPORT","url":"https://github.com/randombit/botan/compare/2.17.2...2.17.3"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-24115"}],"affected":[{"package":{"name":"botan1.10","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/botan1.10@1.10.5-1+deb7u1ubuntu0.14.04.1+esm1?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.5-1","1.10.5-1ubuntu1","1.10.5-1+deb7u1ubuntu0.14.04.1","1.10.5-1+deb7u1ubuntu0.14.04.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.10.5-1+deb7u1ubuntu0.14.04.1+esm1","binary_name":"libbotan-1.10-0"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-24115.json"}},{"package":{"name":"botan1.10","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/botan1.10@1.10.12-1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.10-6","1.10.12-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libbotan-1.10-1","binary_version":"1.10.12-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-24115.json"}},{"package":{"name":"botan","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/botan@2.4.0-5ubuntu1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4.0-3","2.4.0-4","2.4.0-5ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"botan","binary_version":"2.4.0-5ubuntu1"},{"binary_name":"libbotan-2-4","binary_version":"2.4.0-5ubuntu1"},{"binary_version":"2.4.0-5ubuntu1","binary_name":"python3-botan"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-24115.json"}},{"package":{"name":"botan1.10","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/botan1.10@1.10.17-0.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.16-1","1.10.17-0.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.10.17-0.1","binary_name":"libbotan-1.10-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-24115.json"}},{"package":{"name":"botan","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/botan@2.12.1-2build1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.9.0-2","2.9.0-2build1","2.12.1-2","2.12.1-2build1"],"ecosystem_specific":{"binaries":[{"binary_name":"botan","binary_version":"2.12.1-2build1"},{"binary_name":"libbotan-2-12","binary_version":"2.12.1-2build1"},{"binary_name":"python3-botan","binary_version":"2.12.1-2build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-24115.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:H/A:H"},{"type":"Ubuntu","score":"low"}]}