An issue was discovered in tls_verify_crl in ProFTPD before 1.3.6. Direct dereference of a NULL pointer (a variable initialized to NULL) leads to a crash when validating the certificate of a client connecting to the server in a TLS client/server mutual-authentication setup.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade proftpd-dfsg | Jul 30, 2024 | Nov 26, 2019 |
| Proftp Proftpd | — | Update ProFTP ProFTPd to the latest version | Nov 6, 2025 | Nov 26, 2019 |
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