Skip to content

feat: move 930110 to regex-assembly #4494

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
fzipi merged 6 commits into from
Mar 2, 2026
+25 −1
Merged

feat: move 930110 to regex-assembly #4494

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
6 commits
Select commit Hold shift + click to select a range
f321a04
feat: move 930110 to regex-assembly
fzipi Mar 1, 2026
d9a982a
Apply suggestions from code review
fzipi Mar 1, 2026
501e435
Apply suggestions from code review
fzipi Mar 2, 2026
eccc238
chore(formatting): auto fixes from pre-commit hooks
pre-commit-ci[bot] Mar 2, 2026
437c2a4
Apply suggestion from @fzipi
fzipi Mar 2, 2026
1411577
fix: crs-toolchain regex format
fzipi Mar 2, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
19 changes: 19 additions & 0 deletions regex-assembly/930110.ra
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,19 @@
##! Please refer to the documentation at
##! https://coreruleset.org/docs/development/regex_assembly/.

##! Path Traversal Attack detection for decoded payloads (/../) or (/.../)
##! Also detects semicolon-based traversal (;..;) for Tomcat reverse proxy bypass
##!
##! To prevent '..' alone from triggering, the regexp requires a path
##! separator (/, \, or ;) on at least one side of the dots:
##! - ../ or ..\ or ..; (dots followed by separator)
##! - /.. or \.. or ;.. (separator followed by dots)

##!> define sep [\x5c/;]

##!> assemble
^
{{sep}}
##!<
##!=>
\.{2,3}{{sep}}
7 changes: 6 additions & 1 deletion rules/REQUEST-930-APPLICATION-ATTACK-LFI.conf
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -65,7 +65,12 @@ SecRule REQUEST_URI_RAW|ARGS|REQUEST_HEADERS|!REQUEST_HEADERS:Referer|FILES|XML:
#
# Semicolon added to prevent path traversal via reverse proxy mapping '/..;/' (Tomcat)
#
SecRule REQUEST_URI_RAW|ARGS|REQUEST_HEADERS|!REQUEST_HEADERS:Referer|FILES|XML:/* "@rx (?:(?:^|[\x5c/;])\.{2,3}[\x5c/;]|[\x5c/;]\.{2,3}[\x5c/;])" \
# Regular expression generated from regex-assembly/930110.ra.
# To update the regular expression run the following shell script
# (consult https://coreruleset.org/docs/development/regex_assembly/ for details):
# crs-toolchain regex update 930110
#
SecRule REQUEST_URI_RAW|ARGS|REQUEST_HEADERS|!REQUEST_HEADERS:Referer|FILES|XML:/* "@rx (?:^|[/;\x5c])\.{2,3}[/;\x5c]" \
"id:930110,\
phase:2,\
block,\
Expand Down
Loading