CVE-2018-15836

In verifysignedhash in lib/liboswkeys/signatures.c in Openswan before 2.6.50.1, the RSA implementation does not verify the value of padding string during PKCS1 v1.5 signature verification. Consequently, a remote attacker can forge signatures when small public exponents are being used. IKEv2...

CVE-2018-16151

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 after the encoded algorithm OID during PKCS1 v1.5 signature verification. Similar to the flaw in the same version of strongSwa...

DEBIAN-CVE-2018-16151

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 after the encoded algorithm OID during PKCS1 v1.5 signature verification. Similar to the flaw in the same version of strongSwa...

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...

Design/Logic Flaw

In verifysignedhash in lib/liboswkeys/signatures.c in Openswan before 2.6.50.1, the RSA implementation does not verify the value of padding string during PKCS1 v1.5 signature verification. Consequently, a remote attacker can forge signatures when small public exponents are being used. IKEv2...

Authentication flaw

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 after the encoded algorithm OID during PKCS1 v1.5 signature verification. Similar to the flaw in the same version of strongSwa...

CVE-2018-15836

In verifysignedhash in lib/liboswkeys/signatures.c in Openswan before 2.6.50.1, the RSA implementation does not verify the value of padding string during PKCS1 v1.5 signature verification. Consequently, a remote attacker can forge signatures when small public exponents are being used. IKEv2...

Design/Logic Flaw

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-2018-15836

CVE-2018-15836 affects Openswan before 2.6.50.1. In verify_signed_hash() (lib/liboswkeys/signatures.c), the RSA PKCS#1 v1.5 padding value is not verified during signature verification, enabling signature forgery when small public exponents are used. IKEv2 signature verification is affected when R...

CVE-2018-16152

The GMP-based RSA implementation in strongSwan is affected by CVE-2018-16151 and CVE-2018-16152: the gmp_rsa_public_key.c ASN.1/algorithm identifiers do not strictly reject excess or NULL parameters in PKCS#1 v1.5 signatures, enabling potential Bleichenbacher-style forgery and impersonation when ...

CVE-2018-16151

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 after the encoded algorithm OID during PKCS1 v1.5 signature verification. Similar to the flaw in the same version of strongSwa...

CVE-2018-16151

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 after the encoded algorithm OID during PKCS1 v1.5 signature verification. Similar to the flaw in the same version of strongSwa...

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...

CVE-2018-16151

CVE-2018-16151 affects strongSwan’s gmp plugin (RSA via GMP). The flaw is in verify_emsa_pkcs1_signature() where excess data after the encoded OID is not rejected during PKCS#1 v1.5 verification, enabling signature forgery when small public exponents are used and RSA is used for IKEv2 authenticat...

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-2018-16151

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 after the encoded algorithm OID during PKCS1 v1.5 signature verification. Similar to the flaw in the same version of strongSwa...

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...

Evidence for the Security of PKCS #1 Digital Signatures

This is interesting research: "On the Security of the PKCS1 v1.5 Signature Scheme": Abstract: The RSA PKCS1 v1.5 signature algorithm is the most widely used digital signature scheme in practice. Its two main strengths are its extreme simplicity, which makes it very easy to implement, and that...