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Merged
fzipi merged 2 commits into from
Mar 3, 2026
Merged

refactor: create 942450 .ra file #4513

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3858ae5
refactor: create 942450 `.ra` file
fzipi Mar 2, 2026
18c530a
Merge branch 'main' into regex-assembly/942450
fzipi Mar 2, 2026
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20 changes: 20 additions & 0 deletions regex-assembly/942450.ra
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Original file line number Diff line number Diff line change
@@ -0,0 +1,20 @@
##! Please refer to the documentation at
##! https://coreruleset.org/docs/development/regex_assembly/.

##! Rule 942450: SQL Bin / Hex Evasion Methods
##!
##! Detects SQL hex and binary encoding used to evade detection:
##! - 0x hex prefix (e.g., 0xf00d)
##! - x'...' hex string literal (MySQL/SQLite)
##! - b'...' binary string literal (MySQL)

##!+ i

##! hex encoding: 0x followed by 3+ hex digits (word boundary anchored)
\b0x[a-f\d]{3,}

##! MySQL/SQLite hex string literal: x'...'
x'[a-f\d]{3,}'

##! MySQL binary string literal: b'...' (10+ binary digits)
b'[0-1]{10,}'
7 changes: 6 additions & 1 deletion rules/REQUEST-942-APPLICATION-ATTACK-SQLI.conf
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Expand Up @@ -1391,7 +1391,12 @@ SecRule REQUEST_COOKIES|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx /\*!?|
# Hex encoding detection:
# (?i:\b0x[a-f\d]{3,}) will match any 3 or more hex bytes after "0x", together forming a hexadecimal payload(e.g 0xf00, 0xf00d and so on)
#
SecRule REQUEST_COOKIES|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx (?i:\b0x[a-f\d]{3,}|x\'[a-f\d]{3,}\'|b\'[0-1]{10,}\')" \
# Regular expression generated from regex-assembly/942450.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 942450
#
SecRule REQUEST_COOKIES|REQUEST_COOKIES_NAMES|ARGS_NAMES|ARGS|XML:/* "@rx (?i)\b0x[0-9a-f]{3,}|(?:x'[0-9a-f]{3,}|b'[01]{10,})'" \
"id:942450,\
phase:2,\
block,\
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