{"id":"USN-5250-1","summary":"strongswan vulnerability","details":"Zhuowei Zhang discovered that stringSwan incorrectly handled EAP\nauthentication. A remote attacker could use this issue to cause strongSwan\nto crash, resulting in a denial of service, or possibly bypass client and\nserver authentication.\n","modified":"2026-04-08T13:37:30.206215Z","published":"2022-01-24T17:29:23Z","related":["UBUNTU-CVE-2021-45079"],"upstream":["CVE-2021-45079","UBUNTU-CVE-2021-45079"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5250-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-45079"}],"affected":[{"package":{"name":"strongswan","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/strongswan@5.6.2-1ubuntu2.8?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.6.2-1ubuntu2.8"}]}],"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","5.6.2-1ubuntu2.7"],"ecosystem_specific":{"binaries":[{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"charon-cmd"},{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"charon-systemd"},{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"libcharon-extra-plugins"},{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"libcharon-standard-plugins"},{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"libstrongswan"},{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"libstrongswan-extra-plugins"},{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"libstrongswan-standard-plugins"},{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"strongswan"},{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"strongswan-charon"},{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"strongswan-libcharon"},{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"strongswan-nm"},{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"strongswan-pki"},{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"strongswan-scepclient"},{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"strongswan-starter"},{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"strongswan-swanctl"},{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"strongswan-tnc-base"},{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"strongswan-tnc-client"},{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"strongswan-tnc-ifmap"},{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"strongswan-tnc-pdp"},{"binary_version":"5.6.2-1ubuntu2.8","binary_name":"strongswan-tnc-server"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5250-1.json","cves_map":{"cves":[{"id":"CVE-2021-45079","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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@5.8.2-1ubuntu3.4?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.8.2-1ubuntu3.4"}]}],"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","5.8.2-1ubuntu3.3"],"ecosystem_specific":{"binaries":[{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"charon-cmd"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"charon-systemd"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"libcharon-extauth-plugins"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"libcharon-extra-plugins"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"libcharon-standard-plugins"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"libstrongswan"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"libstrongswan-extra-plugins"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"libstrongswan-standard-plugins"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"strongswan"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"strongswan-charon"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"strongswan-libcharon"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"strongswan-nm"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"strongswan-pki"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"strongswan-scepclient"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"strongswan-starter"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"strongswan-swanctl"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"strongswan-tnc-base"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"strongswan-tnc-client"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"strongswan-tnc-ifmap"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"strongswan-tnc-pdp"},{"binary_version":"5.8.2-1ubuntu3.4","binary_name":"strongswan-tnc-server"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5250-1.json","cves_map":{"cves":[{"id":"CVE-2021-45079","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:20.04:LTS"}}}],"schema_version":"1.7.5"}