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Bug #1288

closed

Filestore keyword in wrong place will cause entire rule not to trigger

Added by Antti Tönkyrä about 10 years ago. Updated about 10 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Victor Julien
Target version:
2.1beta2
Affected Versions:
Effort:
Difficulty:
Label:

Description

When using filestore keyword I noticed some alerts never triggering even though they should have. After some debugging and investigating I observed the following:

alert http any any -> any any (msg:"parser1"; content:"testnfs"; filestore:both,flow; sid:9;)
alert http any any -> any any (msg:"parser2"; content:"testnfs"; sid:10; filestore:both,flow;)

SID 9 will trigger an alert but SID 10 will not trigger an alert. Changing the order in the rule file will not alter the result either.

Observed on git head (04afcf2717d1d6814a8ac39b5489ef3ce8ff2f0d).

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