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Bug #4344

closed

Protocol detection evasion enip-SMB

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

Status:
Closed
Priority:
Normal
Assignee:
Victor Julien
Target version:
6.0.2
Affected Versions:
6.0.1
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
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 #1

Updated by Jeff Lucovsky almost 4 years ago

  • Copied from Bug #4232: Protocol detection evasion enip-SMB added
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 #2

Updated by Victor Julien almost 4 years ago

  • Status changed from Assigned to In Progress
  • Assignee changed from Shivani Bhardwaj to Victor Julien
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 #4

Updated by Jeff Lucovsky almost 4 years ago

  • Private changed from Yes to No
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