patterns/waf_patterns/nginx/sql.conf

# Nginx WAF rules for SQL
location / {
    set $attack_detected 0;

    if ($request_uri ~* "(?i:An illegal character has been found in the statement|com.informix.jdbc|Exception.*Informix)") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?i:JET Database Engine|Access Database Engine|[Microsoft][ODBC Microsoft Access Driver])") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?i)Exception (?:condition )?d+. Transaction rollback.") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?i)Dynamic SQL Error") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?i:<b>Warning</b>: ibase_|Unexpected end of command in statement)") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?i:ORA-[0-9][0-9][0-9][0-9]|java.sql.SQLException|Oracle error|Oracle.*Driver|Warning.*oci_.*|Warning.*ora_.*)") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?i)org.hsqldb.jdbc") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?i:SQL error.*POS[0-9]+.*|Warning.*maxdb.*)") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?i)(?:Warning.*sqlite_.*|Warning.*SQLite3::|SQLite/JDBCDriver|SQLite.Exception|System.Data.SQLite.SQLiteException)") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?i)(?:Sybase message:|Warning.{2,20}sybase|Sybase.*Server message.*)") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?i)(?:System.Data.OleDb.OleDbException|[Microsoft][ODBC SQL Server Driver]|[Macromedia][SQLServer JDBC Driver]|[SqlException|System.Data.SqlClient.SqlException|Unclosed quotation mark after the character string|'80040e14'|mssql_query()|Microsoft OLE DB Provider for ODBC Drivers|Microsoft OLE DB Provider for SQL Server|Incorrect syntax near|Sintaxis incorrecta cerca de|Syntax error in string in query expression|Procedure or function .* expects parameter|Unclosed quotation mark before the character string|Syntax error .* in query expression|Data type mismatch in criteria expression.|ADODB.Field (0x800A0BCD)|the used select statements have different number of columns|OLE DB.*SQL Server|Warning.*mssql_.*|Driver.*SQL[ _-]*Server|SQL Server.*Driver|SQL Server.*[0-9a-fA-F]{8}|Exception.*WSystem.Data.SqlClient.|Conversion failed when converting the varchar value .*? to data type int.)") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?i:Warning.*ingres_|Ingres SQLSTATE|IngresW.*Driver)") {
        set $attack_detected 1;
    }

    if ($request_uri ~* "(?i:[DM_QUERY_E_SYNTAX]|has occurred in the vicinity of:)") {
        set $attack_detected 1;
    }

    if ($attack_detected = 1) {
        return 403;
    }
}