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Bug #4286
openFN occurs when using negated isdataat with http_cookie keyword
Status:
New
Priority:
Normal
Assignee:
-
Target version:
-
Affected Versions:
Effort:
Difficulty:
Label:
Needs Suricata-Verify test
Description
Given a sample of traffic such as:
GET /somestuff HTTP/1.1
Accept: */*
Cookie: id=234524dst35e
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0000; Windows NT 5.1; SV1)
Host: google.com
We would expect the following to work:
alert http $HOME_NET any -> $EXTERNAL_NET any (flow:established,to_server; content:"id="; depth:3; isdataat:!13,relative; http_cookie;)
However, the rule does not fire as expected in any of the 4.0.x, 4.1.x, 5.x versions I tested on.
If we switch the rule to use http.cookie, the rule works as expected.
Updated by Philippe Antoine about 3 years ago
- Is duplicate of Bug #2479: http_cookie negation fails if no cookie in traffic added
Updated by Victor Julien over 1 year ago
- Is duplicate of deleted (Bug #2479: http_cookie negation fails if no cookie in traffic)
Updated by Juliana Fajardini Reichow over 1 year ago
- Related to Task #5483: SV tests to demonstrate false negative behavior for negated isdataat with http_cookie keyword (bug 4286) added
Updated by Juliana Fajardini Reichow over 1 year ago
- Related to deleted (Task #5483: SV tests to demonstrate false negative behavior for negated isdataat with http_cookie keyword (bug 4286))
Updated by Juliana Fajardini Reichow over 1 year ago
- Related to Documentation #5484: userguide: explain content modifiers usage with regards to position usage in the rule added
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