{"id":"USN-5250-2","summary":"strongswan vulnerability","details":"USN-5250-1 fixed a vulnerability in strongSwan. This update provides\nthe corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.\n\nOriginal advisory details:\n\n Zhuowei Zhang discovered that stringSwan incorrectly handled EAP\n authentication. A remote attacker could use this issue to cause strongSwan\n to crash, resulting in a denial of service, or possibly bypass client and\n server authentication.\n","modified":"2026-05-20T16:03:11.778887853Z","published":"2022-01-24T19:07:24Z","related":["UBUNTU-CVE-2021-45079"],"upstream":["CVE-2021-45079","UBUNTU-CVE-2021-45079"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5250-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-45079"}],"affected":[{"package":{"name":"strongswan","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/strongswan?arch=source&distro=trusty%2Fesm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.1.2-0ubuntu2.11+esm2"}]}],"versions":["4.6.4-9","5.1.0-2","5.1.0-3","5.1.1-0ubuntu1","5.1.1-0ubuntu2","5.1.1-0ubuntu3","5.1.1-0ubuntu4","5.1.1-0ubuntu5","5.1.1-0ubuntu7","5.1.1-0ubuntu14","5.1.1-0ubuntu17","5.1.2~dr3+git20130120-0ubuntu2","5.1.2~dr3+git20130120-0ubuntu3","5.1.2~rc1-0ubuntu3","5.1.2~rc1-0ubuntu4","5.1.2~rc2-0ubuntu2","5.1.2-0ubuntu1","5.1.2-0ubuntu2","5.1.2-0ubuntu2.2","5.1.2-0ubuntu2.3","5.1.2-0ubuntu2.4","5.1.2-0ubuntu2.5","5.1.2-0ubuntu2.6","5.1.2-0ubuntu2.7","5.1.2-0ubuntu2.8","5.1.2-0ubuntu2.10","5.1.2-0ubuntu2.11","5.1.2-0ubuntu2.11+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libstrongswan","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-ike","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-ikev1","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-ikev2","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-nm","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-af-alg","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-agent","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-attr-sql","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-certexpire","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-coupling","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-curl","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-dhcp","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-dnscert","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-dnskey","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-duplicheck","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-eap-aka","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-eap-aka-3gpp2","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-eap-dynamic","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-eap-gtc","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-eap-md5","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-eap-mschapv2","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-eap-peap","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-eap-radius","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-eap-sim","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-eap-sim-file","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-eap-sim-pcsc","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-eap-simaka-pseudonym","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-eap-simaka-reauth","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-eap-simaka-sql","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-eap-tls","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-eap-tnc","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-eap-ttls","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-error-notify","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-farp","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-fips-prf","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-gcrypt","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-gmp","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-ipseckey","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-kernel-libipsec","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-ldap","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-led","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-load-tester","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-lookip","binary_version":"5.1.2-0ubuntu2.11+esm2"},{"binary_name":"strongswan-plugin-mysql","binary_version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