36 lines
1.6 KiB
Plaintext
36 lines
1.6 KiB
Plaintext
Validation of X.509 certificates is essential to create secure SSL/TLS sessions not vulnerable to man-in-the-middle attacks.
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The certificate chain validation includes these steps:
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* The certificate is issued by its parent Certificate Authority or the root CA trusted by the system.
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* Each CA is allowed to issue certificates.
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* Each certificate in the chain is not expired.
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This rule raises an issue when an implementation of X509TrustManager is not controlling the validity of the certificate (ie: no exception is raised). Empty implementations of the ``X509TrustManager`` interface are often created to disable certificate validation. The correct solution is to provide an appropriate trust store.
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== Noncompliant Code Example
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----
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class TrustAllManager implements X509TrustManager {
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@Override
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public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException { // Noncompliant, nothing means trust any client
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}
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@Override
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public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException { // Noncompliant, this method never throws exception, it means trust any server
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LOG.log(Level.SEVERE, ERROR_MESSAGE);
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}
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@Override
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public X509Certificate[] getAcceptedIssuers() {
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return null;
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}
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}
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----
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== See
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* https://www.owasp.org/index.php/Top_10-2017_A6-Security_Misconfiguration[OWASP Top 10 2017 Category A6] - Security Misconfiguration
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* http://cwe.mitre.org/data/definitions/295.html[MITRE, CWE-295] - Improper Certificate Validation
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* https://wiki.sei.cmu.edu/confluence/x/hDdGBQ[CERT, MSC61-J.] - Do not use insecure or weak cryptographic algorithms
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