View at Official suse advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2018-16151 severity moderate: SUSE including 75 source package names (strongswan, strongswan-4.4.0-6.36.12.1, …), 218 product×package rows across 51 product lines (SUSE CaaS Platform 4.5, SUSE Enterprise Storage 4, … (51 product lines)): Fixed 169, Known Not Affected 49.
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.