{"id":"CVE-2018-16151","state":"PUBLISHED","title":"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 a","description":"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.","publishedAt":"2018-09-26T21:00:00.000Z","updatedAt":"2025-12-03T20:26:00.122Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","source":"CISA-ADP"},"assigner":"mitre","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["https://www.debian.org/security/2018/dsa-4305","https://security.gentoo.org/glsa/201811-16","https://www.strongswan.org/blog/2018/09/24/strongswan-vulnerability-%28cve-2018-16151%2C-cve-2018-16152%29.html","https://lists.debian.org/debian-lts-announce/2018/09/msg00032.html","https://usn.ubuntu.com/3771-1/","http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00077.html","http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00001.html","http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00047.html"],"weaknesses":["CWE-347"],"ingestedAt":"2026-10-29T19:44:25.237Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2018/16xxx/CVE-2018-16151.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2018-16151","state":"PUBLISHED","datePublished":"2018-09-26T21:00:00.000Z","dateUpdated":"2025-12-03T20:26:00.122Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2018-08-29T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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. 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