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Suricata version 4.0.4 incorrectly handles the parsing of the SSH banner. A malformed SSH banner can cause the parsing code to read beyond the allocated data because SSHParseBanner in app-layer-ssh.c lacks a length check.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade suricata | Apr 10, 2019 | Apr 4, 2019 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | Apr 4, 2019 |
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