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Merge remote-tracking branch 'origin/topic/jsiwek/gh-352-improve-sql-injection-regex' into master

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* origin/topic/jsiwek/gh-352-improve-sql-injection-regex:
  GH-352: Improve HTTP::match_sql_injection_uri regex
This commit is contained in:
Jon Siwek 2020-11-16 11:50:49 -08:00
commit 6ed4850a26
5 changed files with 21 additions and 9 deletions
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10
scripts/policy/protocols/http/detect-sqli.zeek
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@ -46,11 +46,11 @@ export {
## Regular expression is used to match URI based SQL injections.
const match_sql_injection_uri =
/[\?&][^[:blank:]\x00-\x37\|]+?=[\-[:alnum:]%]+([[:blank:]\x00-\x37]|\/\*.*?\*\/)*['"]?([[:blank:]\x00-\x37]|\/\*.*?\*\/|\)?;)+.*?([hH][aA][vV][iI][nN][gG]|[uU][nN][iI][oO][nN]|[eE][xX][eE][cC]|[sS][eE][lL][eE][cC][tT]|[dD][eE][lL][eE][tT][eE]|[dD][rR][oO][pP]|[dD][eE][cC][lL][aA][rR][eE]|[cC][rR][eE][aA][tT][eE]|[iI][nN][sS][eE][rR][tT])([[:blank:]\x00-\x37]|\/\*.*?\*\/)+/
| /[\?&][^[:blank:]\x00-\x37\|]+?=[\-0-9%]+([[:blank:]\x00-\x37]|\/\*.*?\*\/)*['"]?([[:blank:]\x00-\x37]|\/\*.*?\*\/|\)?;)+([xX]?[oO][rR]|[nN]?[aA][nN][dD])([[:blank:]\x00-\x37]|\/\*.*?\*\/)+['"]?(([^a-zA-Z&]+)?=|[eE][xX][iI][sS][tT][sS])/
| /[\?&][^[:blank:]\x00-\x37]+?=[\-0-9%]*([[:blank:]\x00-\x37]|\/\*.*?\*\/)*['"]([[:blank:]\x00-\x37]|\/\*.*?\*\/)*(-|=|\+|\|\|)([[:blank:]\x00-\x37]|\/\*.*?\*\/)*([0-9]|\(?[cC][oO][nN][vV][eE][rR][tT]|[cC][aA][sS][tT])/
| /[\?&][^[:blank:]\x00-\x37\|]+?=([[:blank:]\x00-\x37]|\/\*.*?\*\/)*['"]([[:blank:]\x00-\x37]|\/\*.*?\*\/|;)*([xX]?[oO][rR]|[nN]?[aA][nN][dD]|[hH][aA][vV][iI][nN][gG]|[uU][nN][iI][oO][nN]|[eE][xX][eE][cC]|[sS][eE][lL][eE][cC][tT]|[dD][eE][lL][eE][tT][eE]|[dD][rR][oO][pP]|[dD][eE][cC][lL][aA][rR][eE]|[cC][rR][eE][aA][tT][eE]|[rR][eE][gG][eE][xX][pP]|[iI][nN][sS][eE][rR][tT])([[:blank:]\x00-\x37]|\/\*.*?\*\/|[\[(])+[a-zA-Z&]{2,}/
| /[\?&][^[:blank:]\x00-\x37]+?=[^\.]*?([cC][hH][aA][rR]|[aA][sS][cC][iI][iI]|[sS][uU][bB][sS][tT][rR][iI][nN][gG]|[tT][rR][uU][nN][cC][aA][tT][eE]|[vV][eE][rR][sS][iI][oO][nN]|[lL][eE][nN][gG][tT][hH])\(/
/[\?&][^[:blank:]\x00-\x1f\|]+?=[\-[:alnum:]%]+([[:blank:]\x00-\x1f]|\/\*.*?\*\/)*['"]?([[:blank:]\x00-\x1f]|\/\*.*?\*\/|\)?;)+.*?([hH][aA][vV][iI][nN][gG]|[uU][nN][iI][oO][nN]|[eE][xX][eE][cC]|[sS][eE][lL][eE][cC][tT]|[dD][eE][lL][eE][tT][eE]|[dD][rR][oO][pP]|[dD][eE][cC][lL][aA][rR][eE]|[cC][rR][eE][aA][tT][eE]|[iI][nN][sS][eE][rR][tT])([[:blank:]\x00-\x1f]|\/\*.*?\*\/)+/
| /[\?&][^[:blank:]\x00-\x1f\|]+?=[\-0-9%]+([[:blank:]\x00-\x1f]|\/\*.*?\*\/)*['"]?([[:blank:]\x00-\x1f]|\/\*.*?\*\/|\)?;)+([xX]?[oO][rR]|[nN]?[aA][nN][dD])([[:blank:]\x00-\x1f]|\/\*.*?\*\/)+['"]?(([^a-zA-Z&]+)?=|[eE][xX][iI][sS][tT][sS])/
| /[\?&][^[:blank:]\x00-\x1f]+?=[\-0-9%]*([[:blank:]\x00-\x1f]|\/\*.*?\*\/)*['"]([[:blank:]\x00-\x1f]|\/\*.*?\*\/)*(-|=|\+|\|\|)([[:blank:]\x00-\x1f]|\/\*.*?\*\/)*([0-9]|\(?[cC][oO][nN][vV][eE][rR][tT]|[cC][aA][sS][tT])/
| /[\?&][^[:blank:]\x00-\x1f\|]+?=([[:blank:]\x00-\x1f]|\/\*.*?\*\/)*['"]([[:blank:]\x00-\x1f]|\/\*.*?\*\/|;)*([xX]?[oO][rR]|[nN]?[aA][nN][dD]|[hH][aA][vV][iI][nN][gG]|[uU][nN][iI][oO][nN]|[eE][xX][eE][cC]|[sS][eE][lL][eE][cC][tT]|[dD][eE][lL][eE][tT][eE]|[dD][rR][oO][pP]|[dD][eE][cC][lL][aA][rR][eE]|[cC][rR][eE][aA][tT][eE]|[rR][eE][gG][eE][xX][pP]|[iI][nN][sS][eE][rR][tT])([[:blank:]\x00-\x1f]|\/\*.*?\*\/|[\[(])+[a-zA-Z&]{2,}/
| /[\?&][^[:blank:]\x00-\x1f]+?=[^\.]*?([cC][hH][aA][rR]|[aA][sS][cC][iI][iI]|[sS][uU][bB][sS][tT][rR][iI][nN][gG]|[tT][rR][uU][nN][cC][aA][tT][eE]|[vV][eE][rR][sS][iI][oO][nN]|[lL][eE][nN][gG][tT][hH])\(/
| /\/\*![[:digit:]]{5}.*?\*\// &redef;
## A hook that can be used to prevent specific requests from being counted