Описание
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.
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | released | 5.6.2-1ubuntu2.2 |
| devel | released | 5.6.3-1ubuntu3 |
| esm-infra-legacy/trusty | released | 5.1.2-0ubuntu2.10 |
| esm-infra/bionic | released | 5.6.2-1ubuntu2.2 |
| esm-infra/xenial | released | 5.3.5-1ubuntu3.7 |
| precise/esm | DNE | |
| trusty | released | 5.1.2-0ubuntu2.10 |
| trusty/esm | released | 5.1.2-0ubuntu2.10 |
| upstream | needs-triage | |
| xenial | released | 5.3.5-1ubuntu3.7 |
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5 Medium
CVSS2
7.5 High
CVSS3
Связанные уязвимости
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.
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.
In verify_emsa_pkcs1_signature() in gmp_rsa_public_key.c in the gmp pl ...
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.
Уязвимость функции verify_emsa_pkcs1_signature() плагина gmp IPSEC демона strongSwan, позволяющая нарушителю раскрыть защищаемую информацию
5 Medium
CVSS2
7.5 High
CVSS3