Suricata is a network IDS, IPS and NSM engine. Prior to version 8.0.3 and 7.0.14, an unsigned integer overflow can lead to a heap use-after-free condition when generating excessive amounts of alerts for a single packet. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, do not run untrusted rulesets or run with less than 65536 signatures that can match on the same packet.
Weakness
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Suricata | Oisf | * | 7.0.14 (excluding) |
| Suricata | Oisf | 8.0.0 (including) | 8.0.3 (excluding) |
| Suricata | Ubuntu | upstream | * |
Potential Mitigations
References
- https://github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715
- https://github.com/OISF/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2
- https://github.com/OISF/suricata/commit/ac1eb394181530430fb7262969f423a1bf8f209b
- https://github.com/OISF/suricata/security/advisories/GHSA-mqr8-m3m4-2hw5
- https://redmine.openinfosecfoundation.org/issues/8190