{"id":"UBUNTU-CVE-2021-28091","details":"Lasso all versions prior to 2.7.0 has improper verification of a cryptographic signature.","modified":"2026-04-22T12:49:48.253514Z","published":"2021-06-01T12:00:00Z","related":["USN-4974-1"],"upstream":["CVE-2021-28091"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-28091"},{"type":"REPORT","url":"https://git.entrouvert.org/lasso.git/commit/?id=ea7e5efe9741e1b1787a58af16cb15b40c23be5a"},{"type":"REPORT","url":"https://blogs.akamai.com/2021/06/saml-implementation-vulnerability-impacting-some-akamai-services.html"},{"type":"REPORT","url":"https://blogs.akamai.com/2021/06/akamai-eaa-impersonation-vulnerability---a-deep-dive.html"},{"type":"REPORT","url":"https://blogs.akamai.com/2021/06/sogo-and-packetfence-impacted-by-saml-implementation-vulnerabilities.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4974-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-28091"}],"affected":[{"package":{"name":"lasso","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/lasso@2.5.0-3ubuntu2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4.1-1build1","2.5.0-1","2.5.0-2","2.5.0-3","2.5.0-3build1","2.5.0-3ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"liblasso-perl","binary_version":"2.5.0-3ubuntu2"},{"binary_name":"liblasso3","binary_version":"2.5.0-3ubuntu2"},{"binary_name":"python-lasso","binary_version":"2.5.0-3ubuntu2"},{"binary_name":"python3-lasso","binary_version":"2.5.0-3ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-28091.json"}},{"package":{"name":"lasso","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/lasso@2.5.1-0ubuntu1.2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.1-0ubuntu1.2"}]}],"versions":["2.5.0-5build4","2.5.0-5build5","2.5.0-5ubuntu1","2.5.1-0ubuntu1","2.5.1-0ubuntu1.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"liblasso-perl","binary_version":"2.5.1-0ubuntu1.2"},{"binary_name":"liblasso3","binary_version":"2.5.1-0ubuntu1.2"},{"binary_name":"python-lasso","binary_version":"2.5.1-0ubuntu1.2"},{"binary_name":"python3-lasso","binary_version":"2.5.1-0ubuntu1.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-28091.json"}},{"package":{"name":"lasso","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/lasso@2.6.0-7ubuntu1.2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.0-7ubuntu1.2"}]}],"versions":["2.6.0-2ubuntu1","2.6.0-2ubuntu2","2.6.0-7ubuntu1","2.6.0-7ubuntu1.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"liblasso-perl","binary_version":"2.6.0-7ubuntu1.2"},{"binary_name":"liblasso3","binary_version":"2.6.0-7ubuntu1.2"},{"binary_name":"python3-lasso","binary_version":"2.6.0-7ubuntu1.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-28091.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}