In OISF LibHTP before 0.5.31, as used in Suricata 4.1.4 and other products, an HTTP protocol parsing error causes the http_header signature to not alert on a response with a single rn ending.
Weakness
The product does not properly “clean up” and remove temporary or supporting resources after they have been used.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libhtp | Oisf | * | 0.5.31 (excluding) |
| Suricata | Suricata-ids | 4.1.4 (including) | 4.1.4 (including) |
| Libhtp | Ubuntu | bionic | * |
| Libhtp | Ubuntu | disco | * |
| Libhtp | Ubuntu | eoan | * |
| Libhtp | Ubuntu | trusty | * |
| Libhtp | Ubuntu | upstream | * |
| Libhtp | Ubuntu | xenial | * |