{"id":"USN-7841-1","summary":"strongswan vulnerability","details":"Xu Biang discovered that the strongSwan client incorrectly handled\nEAP-MSCHAPv2 failure requests. If a user or automated system were tricked\ninto connecting to a malicious server, a remote attacker could use this\nissue to cause strongSwan to crash, resulting in a denial of service, or\npossibly execute arbitrary code.","modified":"2026-04-27T18:24:52.469670Z","published":"2025-10-27T15:05:57Z","related":["UBUNTU-CVE-2025-62291"],"upstream":["CVE-2025-62291","UBUNTU-CVE-2025-62291"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7841-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-62291"}],"affected":[{"package":{"name":"strongswan","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/strongswan@5.9.5-2ubuntu2.4?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.9.5-2ubuntu2.4"}]}],"versions":["5.9.1-1ubuntu3","5.9.1-1ubuntu3.1","5.9.4-1ubuntu1","5.9.4-1ubuntu2","5.9.4-1ubuntu3","5.9.4-1ubuntu4","5.9.5-2ubuntu1","5.9.5-2ubuntu2","5.9.5-2ubuntu2.1","5.9.5-2ubuntu2.2","5.9.5-2ubuntu2.3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"charon-cmd","binary_version":"5.9.5-2ubuntu2.4"},{"binary_name":"charon-systemd","binary_version":"5.9.5-2ubuntu2.4"},{"binary_name":"libcharon-extauth-plugins","binary_version":"5.9.5-2ubuntu2.4"},{"binary_name":"libcharon-extra-plugins","binary_version":"5.9.5-2ubuntu2.4"},{"binary_name":"libstrongswan","binary_version":"5.9.5-2ubuntu2.4"},{"binary_version":"5.9.5-2ubuntu2.4","binary_name":"libstrongswan-extra-plugins"},{"binary_name":"libstrongswan-standard-plugins","binary_version":"5.9.5-2ubuntu2.4"},{"binary_name":"strongswan","binary_version":"5.9.5-2ubuntu2.4"},{"binary_name":"strongswan-charon","binary_version":"5.9.5-2ubuntu2.4"},{"binary_version":"5.9.5-2ubuntu2.4","binary_name":"strongswan-libcharon"},{"binary_name":"strongswan-nm","binary_version":"5.9.5-2ubuntu2.4"},{"binary_name":"strongswan-pki","binary_version":"5.9.5-2ubuntu2.4"},{"binary_name":"strongswan-scepclient","binary_version":"5.9.5-2ubuntu2.4"},{"binary_name":"strongswan-starter","binary_version":"5.9.5-2ubuntu2.4"},{"binary_name":"strongswan-swanctl","binary_version":"5.9.5-2ubuntu2.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7841-1.json","cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2025-62291"}],"ecosystem":"Ubuntu:22.04:LTS"}}},{"package":{"name":"strongswan","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/strongswan@5.9.13-2ubuntu4.24.04.1?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.9.13-2ubuntu4.24.04.1"}]}],"versions":["5.9.11-1ubuntu1","5.9.11-1ubuntu2","5.9.12-1ubuntu1","5.9.13-2ubuntu1","5.9.13-2ubuntu3","5.9.13-2ubuntu4"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"charon-cmd","binary_version":"5.9.13-2ubuntu4.24.04.1"},{"binary_version":"5.9.13-2ubuntu4.24.04.1","binary_name":"charon-systemd"},{"binary_version":"5.9.13-2ubuntu4.24.04.1","binary_name":"libcharon-extauth-plugins"},{"binary_name":"libcharon-extra-plugins","binary_version":"5.9.13-2ubuntu4.24.04.1"},{"binary_name":"libstrongswan","binary_version":"5.9.13-2ubuntu4.24.04.1"},{"binary_name":"libstrongswan-extra-plugins","binary_version":"5.9.13-2ubuntu4.24.04.1"},{"binary_name":"libstrongswan-standard-plugins","binary_version":"5.9.13-2ubuntu4.24.04.1"},{"binary_name":"strongswan","binary_version":"5.9.13-2ubuntu4.24.04.1"},{"binary_name":"strongswan-charon","binary_version":"5.9.13-2ubuntu4.24.04.1"},{"binary_version":"5.9.13-2ubuntu4.24.04.1","binary_name":"strongswan-libcharon"},{"binary_name":"strongswan-nm","binary_version":"5.9.13-2ubuntu4.24.04.1"},{"binary_name":"strongswan-pki","binary_version":"5.9.13-2ubuntu4.24.04.1"},{"binary_name":"strongswan-starter","binary_version":"5.9.13-2ubuntu4.24.04.1"},{"binary_name":"strongswan-swanctl","binary_version":"5.9.13-2ubuntu4.24.04.1"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2025-62291","severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:24.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7841-1.json"}},{"package":{"name":"strongswan","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/strongswan@6.0.1-6ubuntu4.1?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.1-6ubuntu4.1"}]}],"versions":["5.9.13-2ubuntu4","5.9.13-2ubuntu5","6.0.1-6ubuntu2","6.0.1-6ubuntu4"],"ecosystem_specific":{"availability":"No subscription 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