Strongswan: >> Strongswan >> 5.6.1 Security Vulnerabilities
The gmp plugin in strongSwan before 5.9.4 has a remote integer overflow via a crafted certificate with an RSASSA-PSS signature. For example, this can be triggered by an unrelated self-signed CA certificate sent by an initiator. Remote code execution cannot occur.
CVSS Score
7.5
EPSS Score
0.067
Published
2021-10-18
The in-memory certificate cache in strongSwan before 5.9.4 has a remote integer overflow upon receiving many requests with different certificates to fill the cache and later trigger the replacement of cache entries. The code attempts to select a less-often-used cache entry by means of a random number generator, but this is not done correctly. Remote code execution might be a slight possibility.
CVSS Score
7.5
EPSS Score
0.052
Published
2021-10-18
The gmp plugin in strongSwan before 5.7.1 has a Buffer Overflow via a crafted certificate.
CVSS Score
7.5
EPSS Score
0.035
Published
2018-10-03
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.
CVSS Score
7.5
EPSS Score
0.019
Published
2018-09-26
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 in the digestAlgorithm.parameters field during PKCS#1 v1.5 signature verification. Consequently, 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. This is a variant of CVE-2006-4790 and CVE-2014-1568.
CVSS Score
7.5
EPSS Score
0.019
Published
2018-09-26
strongSwan 5.6.0 and older allows Remote Denial of Service because of Missing Initialization of a Variable.
CVSS Score
7.5
EPSS Score
0.062
Published
2018-06-19
In stroke_socket.c in strongSwan before 5.6.3, a missing packet length check could allow a buffer underflow, which may lead to resource exhaustion and denial of service while reading from the socket.
CVSS Score
6.5
EPSS Score
0.04
Published
2018-05-31
The rsa_pss_params_parse function in libstrongswan/credentials/keys/signature_params.c in strongSwan 5.6.1 allows remote attackers to cause a denial of service via a crafted RSASSA-PSS signature that lacks a mask generation function parameter.
CVSS Score
5.3
EPSS Score
0.01
Published
2018-02-20
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