PAM-PKCS#11 vulnerable to authentication bypass with default value for `cert_policy` (`none`)

PAM-PKCS#11 is a Linux-PAM login module that allows a X.509 certificate based user login. Prior to version 0.6.13, if cert_policy is set to none (the default value), then pam_pkcs11 will only check if the user is capable of logging into the token. An attacker may create a different token with the user's public data (e.g. the user's certificate) and a PIN known to the attacker. If no signature with the private key is required, then the attacker may now login as user with that created token. The default to *not* check the private key's signature has been changed with commit commi6638576892b59a99389043c90a1e7dd4d783b921, so that all versions starting with pam_pkcs11-0.6.0 should be affected. As a workaround, in `pam_pkcs11.conf`, set at least `cert_policy = signature;`.

N/A

认证机制不恰当

PAM-PKCS#11 授权问题漏洞

PAM-PKCS#11是OpenSC开源的一个登录模块。 PAM-PKCS#11 0.6.13之前版本存在授权问题漏洞，该漏洞源于默认配置下不检查私钥签名，允许攻击者用用户的公开数据创建新令牌并登录。

N/A

N/A