owasp-modsecurity / owasp-modsecurity/ModSecurity

Sorted collections

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pending feedback RIP - Type - Feature RIP - Type - Usage TBF by libmodsec
Dominant language
C++
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Description

For some collections (ARGS, REQUEST_COOKIES), it may be necessary to have them sorted in order to concatenate them in an intelligent way (i.e. concatenated all ARGS named "a" without others in the middle). Think about HTTP parameter pollution...
SORTED_MATCHED_VARS should be sufficient to handle sorting of any collection with an intermediate rule.
The sorting should be alphabetically (case-insensitive for the name) but keep the entries with the same name in the original order.

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Research direction

Locate SORTED_MATCHED_VARS and the collection-handling entry points for ARGS and REQUEST_COOKIES. First trace how collection entries are represented and concatenated, then determine how an intermediate sorting rule would preserve original order for case-insensitive name ties. Done means the supported collections can be sorted alphabetically without changing the order of entries with the same name.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
security
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
25/100

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