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An issue was discovered in Suricata 4.1.x before 4.1.4. If the input of the function SSHParseBanner is composed only of a \n character, then the program runs into a heap-based buffer over-read. This occurs because the erroneous search for \r results in an integer underflow.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade suricata | Jul 30, 2024 | May 13, 2019 |
| Freebsd | — | Upgrade suricata | May 27, 2019 | May 26, 2019 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | May 13, 2019 |
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