Project

General

Profile

Actions
Copy link

Bug #4343

closed

Protocol detection evasion enip-SMB

Added by Jeff Lucovsky almost 4 years ago. Updated about 3 years ago.

Status:
Rejected
Priority:
Normal
Assignee:
Jeff Lucovsky
Target version:
-
Affected Versions:
5.0.5, 5.0.6
Effort:
Difficulty:
Label:

Description

Found by oss-fuzz
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28388

Problem is that rs_smb_probe_tcp uses search_smb_record. which searches a SMB record at any position
Before this record, there might be another valid protocol such as ENIP

Why is not parse_nbss_record_partial good enough ?

Files

Download all files
input.pcap (340 Bytes) input.pcap SMB detected Philippe Antoine, 01/21/2021 11:13 AM
input2.pcap (330 Bytes) input2.pcap ENIP detected on shorter payload Philippe Antoine, 01/21/2021 11:13 AM

Related issues 1 (0 open — 1 closed)

Copied from Suricata - Bug #4232: Protocol detection evasion enip-SMBClosedPhilippe AntoineActions
Actions
Copy link

Also available in: Atom PDF