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.
No analysis available yet.
Remediation
No remediation available yet.
Tracking
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Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-1522-1 | strongswan security update |
Debian DSA |
DSA-4305-1 | strongswan security update |
Debian DSA |
DSA-4309-1 | strongswan security update |
EUVD |
EUVD-2018-8006 | 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. |
Ubuntu USN |
USN-3771-1 | strongSwan vulnerabilities |
References
History
Wed, 03 Dec 2025 21:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2025-12-03T20:26:00.122Z
Reserved: 2018-08-29T00:00:00.000Z
Link: CVE-2018-16151
Updated: 2024-08-05T10:17:37.623Z
Status : Modified
Published: 2018-09-26T21:29:01.087
Modified: 2025-12-03T21:15:50.587
Link: CVE-2018-16151
OpenCVE Enrichment
No data.
Debian DLA
Debian DSA
EUVD
Ubuntu USN