Project

General

Profile

Actions
Copy link

Bug #3220

open

ssl_version keyword negation (!) not working

Added by Min-Gyu Jeon about 6 years ago. Updated 5 days ago.

Status:
Assigned
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

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 behaviourNewOISF DevActions
Actions
Copy link

Also available in: Atom PDF