CVE-2018-16151

HighCVSS 7.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-347

Affected software

VendorProductVersions
n/an/an/a

References

Timeline

Published
Sep 26, 2018
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2018-16151: High severity, CVSS 7.5 | Vulnix