{"id":"USN-5111-1","summary":"strongswan vulnerabilities","details":"It was discovered that strongSwan incorrectly handled certain RSASSA-PSS\nsignatures. A remote attacker could use this issue to cause strongSwan to\ncrash, resulting in a denial of service. (CVE-2021-41990)\n\nIt was discovered that strongSwan incorrectly handled replacing\ncertificates in the cache. A remote attacker could use this issue to cause\nstrongSwan to crash, resulting in a denial of service, or possibly execute\narbitrary code. (CVE-2021-41991)\n","modified":"2026-04-27T15:57:38.055784Z","published":"2021-10-19T10:54:55Z","related":["UBUNTU-CVE-2021-41990","UBUNTU-CVE-2021-41991"],"upstream":["CVE-2021-41990","CVE-2021-41991","UBUNTU-CVE-2021-41990","UBUNTU-CVE-2021-41991"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5111-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-41990"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-41991"}],"affected":[{"package":{"name":"strongswan","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/strongswan@5.6.2-1ubuntu2.7?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.6.2-1ubuntu2.7"}]}],"versions":["5.5.1-4ubuntu2","5.5.1-4ubuntu3","5.6.1-2ubuntu1","5.6.1-2ubuntu2","5.6.1-2ubuntu3","5.6.1-2ubuntu4","5.6.2-1ubuntu2","5.6.2-1ubuntu2.2","5.6.2-1ubuntu2.3","5.6.2-1ubuntu2.4","5.6.2-1ubuntu2.5","5.6.2-1ubuntu2.6"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"charon-cmd","binary_version":"5.6.2-1ubuntu2.7"},{"binary_name":"charon-systemd","binary_version":"5.6.2-1ubuntu2.7"},{"binary_name":"libcharon-extra-plugins","binary_version":"5.6.2-1ubuntu2.7"},{"binary_name":"libcharon-standard-plugins","binary_version":"5.6.2-1ubuntu2.7"},{"binary_version":"5.6.2-1ubuntu2.7","binary_name":"libstrongswan"},{"binary_name":"libstrongswan-extra-plugins","binary_version":"5.6.2-1ubuntu2.7"},{"binary_name":"libstrongswan-standard-plugins","binary_version":"5.6.2-1ubuntu2.7"},{"binary_name":"strongswan","binary_version":"5.6.2-1ubuntu2.7"},{"binary_name":"strongswan-charon","binary_version":"5.6.2-1ubuntu2.7"},{"binary_name":"strongswan-libcharon","binary_version":"5.6.2-1ubuntu2.7"},{"binary_name":"strongswan-nm","binary_version":"5.6.2-1ubuntu2.7"},{"binary_name":"strongswan-pki","binary_version":"5.6.2-1ubuntu2.7"},{"binary_version":"5.6.2-1ubuntu2.7","binary_name":"strongswan-scepclient"},{"binary_name":"strongswan-starter","binary_version":"5.6.2-1ubuntu2.7"},{"binary_name":"strongswan-swanctl","binary_version":"5.6.2-1ubuntu2.7"},{"binary_name":"strongswan-tnc-base","binary_version":"5.6.2-1ubuntu2.7"},{"binary_name":"strongswan-tnc-client","binary_version":"5.6.2-1ubuntu2.7"},{"binary_name":"strongswan-tnc-ifmap","binary_version":"5.6.2-1ubuntu2.7"},{"binary_version":"5.6.2-1ubuntu2.7","binary_name":"strongswan-tnc-pdp"},{"binary_name":"strongswan-tnc-server","binary_version":"5.6.2-1ubuntu2.7"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5111-1.json","cves_map":{"cves":[{"id":"CVE-2021-41990","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-41991","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:18.04:LTS"}}},{"package":{"name":"strongswan","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/strongswan@5.8.2-1ubuntu3.3?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.8.2-1ubuntu3.3"}]}],"versions":["5.7.2-1ubuntu3","5.8.1-1ubuntu1","5.8.2-1ubuntu1","5.8.2-1ubuntu2","5.8.2-1ubuntu3","5.8.2-1ubuntu3.1","5.8.2-1ubuntu3.2"],"ecosystem_specific":{"availability":"No subscription 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