UBUNTU-CVE-2026-50721

Libreswan, via the function RSAauthenticatehashsignaturerawrsa, did not correctly verify the length of the authentication hash when the SIG payload of an IKEv1 packet was encoded using PKCS 1 RSA Encryption as per RFC 2313. A remote attacker can use a variation on the Bleichenbacher attack to for...

CVE-2026-50722

Libreswan, via the function RSAauthenticatehashsignaturepkcs115rsa, did not correctly verify the DER encoding of the ASN.1 digest when the IKEv2 AUTH payload was encoded using RSASSA-PKCS1-v15 RFC 8017. A remote attacker can use a variation on the Bleichenbacher attack to forge the AUTH payload...

ALPINE-CVE-2018-16152

In verifyemsapkcs1signature in gmprsapublickey.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 in the digestAlgorithm.parameters field during PKCS1 v1.5 signature verification. Consequently, a remote attacker can forge...

CVE-2018-16152

In verifyemsapkcs1signature in gmprsapublickey.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 in the digestAlgorithm.parameters field during PKCS1 v1.5 signature verification. Consequently, a remote attacker can forge...

PT-2018-3465

Name of the Vulnerable Software and Affected Versions: strongSwan versions 4.x through 5.x before 5.7.0 Description: The issue is related to the verify emsa pkcs1 signature function in the gmp plugin, which does not correctly verify cryptographic signatures. This can allow a remote attacker to...