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Bug #3573

closed

TCP Fast Open - Bypass of stateless alerts

Added by Jeff Lucovsky over 4 years ago. Updated over 4 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Jeff Lucovsky
Target version:
5.0.3
Affected Versions:
5.0.2
Effort:
medium
Difficulty:
Label:

Description

I have successfully verified that Suricata on latest release version v5.0.2 doesn't detect payloads using TFO (TCP Fast Open). Attached is a .pcap file with a directory path traversal payload which reads an /etc/passwd file, suricata rule to trigger alerts on packets which contain /etc/passwd payload so as the suricata.yaml configuration file.

  1. suricata -V
    This is Suricata version 5.0.2 RELEASE
  1. suricata -c /etc/suricata/suricata.yaml -r tfo.pcap

This issue was addressed by Zeek in October, 2019.

Files

Download all files
tfo.pcap (3.52 KB) tfo.pcap Guillermo Muñoz, 03/11/2020 01:36 PM
local.rules (152 Bytes) local.rules Guillermo Muñoz, 03/11/2020 01:37 PM
suricata.yaml (73.3 KB) suricata.yaml Guillermo Muñoz, 03/11/2020 01:37 PM

Related issues 1 (0 open — 1 closed)

Copied from Suricata - Bug #3522: TCP Fast Open - Bypass of stateless alertsClosedVictor JulienActions
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