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Bug #3220

closed
MJ PA

tls: ssl_version keyword negation (!) not working

Bug #3220: tls: ssl_version keyword negation (!) not working

Added by Min-Gyu Jeon over 6 years ago. Updated 3 months ago.

Status:
Closed
Priority:
Normal
Assignee:
Philippe Antoine
Target version:
9.0.0-beta1
Affected Versions:
8.0.0
Effort:
Difficulty:
low
Label:

Description

issue

*ssl_version keyword being not detected when using negation (!)
  • ex
    alert tcp any any -> any any (ssl_version:!sslv3)

cause

  • in DetectSslVersionParse() function, the negation info is not used properly.

how to fix

  • use the negation info properly
    • check if other version have negations

Files

ssl-v2.pcap (40.4 KB) ssl-v2.pcap pcap from https://wiki.wireshark.org/SampleCaptures Min-Gyu Jeon, 10/13/2019 11:16 AM

Subtasks 2 (0 open — 2 closed)

Bug #8155: tls: ssl_version keyword negation (!) not working (8.0.x backport)ClosedPhilippe AntoineActions
Bug #8158: tls: ssl_version keyword negation (!) not working (7.0.x backport)ClosedPhilippe AntoineActions

Related issues 2 (2 open — 0 closed)

Related to Suricata - Feature #2269: tls: tls.version: allow negation or comparisonNewCommunity TicketActions
Related to Suricata - Bug #7250: tls version match can have incorrect behaviourNewVictor JulienActions
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