{"id":"UBUNTU-CVE-2018-16151","details":"In verify_emsa_pkcs1_signature() in gmp_rsa_public_key.c in the gmp plugin in strongSwan 4.x and 5.x before 5.7.0, the RSA implementation based on GMP does not reject excess data after the encoded algorithm OID during PKCS#1 v1.5 signature verification. Similar to the flaw in the same version of strongSwan regarding digestAlgorithm.parameters, a remote attacker can forge signatures when small public exponents are being used, which could lead to impersonation when only an RSA signature is used for IKEv2 authentication.","modified":"2026-02-04T04:39:48.711863Z","published":"2018-09-24T12:00:00Z","related":["USN-3771-1"],"upstream":["CVE-2018-16151"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-16151"},{"type":"REPORT","url":"https://www.strongswan.org/blog/2018/09/24/strongswan-vulnerability-(cve-2018-16151,-cve-2018-16152).html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3771-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-16151"}],"affected":[{"package":{"name":"strongswan","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/strongswan@5.1.2-0ubuntu2.10?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.1.2-0ubuntu2.10"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"libstrongswan"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-ike"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-ikev1"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-ikev2"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-nm"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-af-alg"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-agent"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-attr-sql"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-certexpire"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-coupling"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-curl"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-dhcp"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-dnscert"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-dnskey"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-duplicheck"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-eap-aka"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-eap-aka-3gpp2"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-eap-dynamic"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-eap-gtc"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-eap-md5"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-eap-mschapv2"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-eap-peap"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-eap-radius"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-eap-sim"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-eap-sim-file"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-eap-sim-pcsc"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-eap-simaka-pseudonym"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-eap-simaka-reauth"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-eap-simaka-sql"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-eap-tls"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-eap-tnc"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-eap-ttls"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-error-notify"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-farp"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-fips-prf"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-gcrypt"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-gmp"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-ipseckey"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-kernel-libipsec"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-ldap"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-led"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-load-tester"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-lookip"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-mysql"},{"binary_version":"5.1.2-0ubuntu2.10","binary_name":"strongswan-plugin-ntru"},{"binary_versio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