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Feature #1125

open

smtp: improve protocol detection

Added by Victor Julien over 10 years ago. Updated 23 days ago.

Status:
In Review
Priority:
Low
Target version:
Effort:
Difficulty:
Label:

Description

Currently SMTP is only detected if the client starts the conversation with HELO, EHLO or QUIT.

The server stream is not used for protocol detection.


Related issues 7 (3 open4 closed)

Related to Suricata - Bug #2978: IRC traffic parsed by FTPIn ProgressPhilippe AntoineActions
Related to Suricata - Task #2757: improve protocol detectionIn ReviewPhilippe AntoineActions
Related to Suricata - Bug #6283: FTP parsing yields in some cases smtp and http event typesRejectedOISF DevActions
Related to Suricata - Feature #6366: pop3 protocol detectionClosedPhilippe AntoineActions
Related to Suricata - Bug #6591: protodetect: ftp parsed as smtpNewOISF DevActions
Blocked by Suricata - Feature #2572: extend protocol detection to specify flow directionClosedVictor JulienActions
Blocked by Suricata - Bug #5769: Incomplete values for .stats."app_layer".flow.protoClosedPhilippe AntoineActions
Actions #1

Updated by Victor Julien over 8 years ago

  • Target version changed from 3.0RC2 to 70
Actions #2

Updated by Victor Julien almost 6 years ago

  • Assignee changed from Tom DeCanio to OISF Dev
Actions #3

Updated by Victor Julien almost 6 years ago

  • Blocked by Feature #2572: extend protocol detection to specify flow direction added
Actions #4

Updated by Victor Julien over 5 years ago

  • Priority changed from Normal to High
Actions #5

Updated by Victor Julien over 5 years ago

  • Related to Task #2757: improve protocol detection added
Actions #6

Updated by Victor Julien over 5 years ago

  • Priority changed from High to Normal
  • Target version changed from 70 to 5.0beta1
Actions #7

Updated by Victor Julien over 5 years ago

  • Priority changed from Normal to High
Actions #8

Updated by Victor Julien over 5 years ago

  • Status changed from New to Assigned
  • Assignee changed from OISF Dev to Philippe Antoine
  • Priority changed from High to Normal
Actions #9

Updated by Victor Julien about 5 years ago

  • Target version changed from 5.0beta1 to 5.0rc1
Actions #10

Updated by Philippe Antoine about 5 years ago

  • Related to Bug #2978: IRC traffic parsed by FTP added
Actions #11

Updated by Victor Julien almost 5 years ago

  • Target version changed from 5.0rc1 to 6.0.0beta1
Actions #12

Updated by Philippe Antoine over 4 years ago

  • Related to deleted (Task #2757: improve protocol detection)
Actions #13

Updated by Philippe Antoine over 4 years ago

  • Blocked by Task #2757: improve protocol detection added
Actions #14

Updated by Philippe Antoine about 4 years ago

  • Status changed from Assigned to Feedback

Waiting first for feedback on other related tickets

Actions #16

Updated by Victor Julien almost 4 years ago

  • Target version changed from 6.0.0beta1 to 7.0.0-beta1
Actions #17

Updated by Philippe Antoine almost 2 years ago

Both FTP and SMTP start with 220 from server (followed by either space or hyphen)

For SMTP, it is then supposed to be a valid domain name.
But there is no restriction for FTP

There can be (E)SMTP or FTP in the banner...

We can use the ports.

And we can maybe mark this detection as weak, so that client side detection overrides it...

Actions #18

Updated by Philippe Antoine almost 2 years ago

  • Status changed from Feedback to In Review
Actions #19

Updated by Philippe Antoine almost 2 years ago

  • Blocked by deleted (Task #2757: improve protocol detection)
Actions #20

Updated by Philippe Antoine almost 2 years ago

  • Related to Task #2757: improve protocol detection added
Actions #21

Updated by Philippe Antoine almost 2 years ago

  • Priority changed from Normal to Low
Actions #22

Updated by Victor Julien over 1 year ago

  • Target version changed from 7.0.0-beta1 to 7.0.0-rc1
Actions #23

Updated by Philippe Antoine over 1 year ago

  • Blocked by Bug #5769: Incomplete values for .stats."app_layer".flow.proto added
Actions #24

Updated by Victor Julien over 1 year ago

  • Target version changed from 7.0.0-rc1 to 8.0.0-beta1
Actions #25

Updated by Philippe Antoine 10 months ago

  • Related to Bug #6283: FTP parsing yields in some cases smtp and http event types added
Actions #26

Updated by Philippe Antoine 9 months ago

Actions #27

Updated by Philippe Antoine 9 months ago

  • Target version changed from 8.0.0-beta1 to TBD
Actions #28

Updated by Victor Julien 7 months ago

  • Related to Bug #6591: protodetect: ftp parsed as smtp added
Actions #29

Updated by Philippe Antoine 23 days ago

  • Target version changed from TBD to 8.0.0-beta1
Actions

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