An issue was discovered in tls_verify_crl in ProFTPD before 1.3.6. A wrong iteration variable, used when checking a client certificate against CRL entries (installed by a system administrator), can cause some CRL entries to be ignored, and can allow clients whose certificates have been revoked to proceed with a connection to the server.
The product does not validate, or incorrectly validates, a certificate.
Link | Tags |
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https://github.com/proftpd/proftpd/issues/860 | third party advisory patch |