Description
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.5 until 8.0.6, the FTP parser in src/app-layer-ftp.c can continue allocating transactions after app-layer.protocols.ftp.max-tx is reached while processing one large chunk of FTP command data. The oversized transaction list is repeatedly processed with quadratic complexity after the too_many_transactions event, allowing crafted FTP traffic to degrade packet processing, reduce monitoring visibility, or cause denial of service. This issue is fixed in version 8.0.6.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OISF | suricata | >= 8.0.5, < 8.0.6 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | suricata | 1:8.0.6-1 | — |
| Debian 13 | suricata | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | suricata | No fix yet | — |
| Ubuntu 24.04 LTS | suricata | No fix yet | — |
| Ubuntu 22.04 LTS | suricata | No fix yet | — |
| Ubuntu 18.04 LTS | suricata | No fix yet | — |
| Ubuntu 16.04 LTS | suricata | No fix yet | — |
References
- https://github.com/OISF/suricata/security/advisories/GHSA-w394-3g33-3jg9
- https://github.com/OISF/suricata/commit/15bf91c5ccbbbf640cd042e1c96974b262549385
- https://github.com/OISF/suricata/commit/82c41905589305e8389ceb793907ccb74798aee5
- https://github.com/OISF/suricata/releases/tag/suricata-8.0.6
- https://redmine.openinfosecfoundation.org/issues/8592