Exploits

Concrete 5.6.2.1 Multiple XSS

While I was playing around with Concrete 5.6.2.1 CMS, I wanted to know how this application shows us a hyperlink to the “Back” button. I found something interesting in the “download_file.php” file.


\concrete\single_pages\download_file.php

line 27

[code language=”php” highlight=”5″]
<form action="<?php echo View::url(‘/download_file’, ‘submit_password’, $fID) ?>" method="post">
<?php if(isset($force)) { ?>
<input type="hidden" value="<?php echo $force ?>" name="force" />
<?php } ?>
<input type="hidden" value="<?php echo $returnURL ?>" name="returnURL" />
<input type="hidden" value="<?php echo $rcID ?>" name="rcID"/>
<label for="password"><?php echo t(‘Password’)?>: <input type="password" name="password" /></label>
<br /><br />
<button type="submit"><?php echo t(‘Download’)?></button>
</form>
[/code]

Let’s have a look at the “$returnURL” variable. (more…)

ZTE WXV10 W300 Multiple Vulnerabilities

Default Password Being Used (CVE-2014-4018)

In ZTE routers the username is a constant which is “admin” and the password by default is “admin”

ROM-0 Backup File Disclosure (CVE-2014-4019)

There is a rom-0 backup file contains sensitive information such as the passwords. There is a disclosure in which anyone can download that file without any authentication by a simple GET request.

http://192.168.1.1/rom-0 (more…)

ZTE and TP-Link RomPager DoS

Introduction

I think by now you know the security issues disclosed related to TP-Link routers. I’ve noticed that some ZTE and TP-Link routers have the same ADSL firmware which is “FwVer:3.11.2.175_TC3086 HwVer:T14.F7_5.0”. I was curious to test the web application and I found out that the embedded server which is “RomPager” cannot handle fairly large POST requests.
Tested Routers:

Xilisoft Video Converter Ultimate DLL Hijacking

Overview of Xilisoft Video Converter Ultimate

Xilisoft Video Converter Ultimate is a professional video converter which has a wide range of video and audio formats. I personally love this software since it uses GPU acceleration in converting videos.

It is on the high side of premium video converters for home use. It automatic profiles enhanced for just any device or format, graphics card detection and acceleration.
-CNET

(more…)

Wireshark DoS PoC

I recently found out that Wireshark 1.10.7 32-bit and 64-bit versions crashes when we input a large buffer into the

  • Filter text box
  • Statistics -> IP DESTINATIONS
  • Statistics -> IP Addresses

(more…)

Pwning Script Kiddies – Acunetix Buffer Overflow

Introduction

Recently a security researcher named “Danor Cohen – An7i” had found a buffer overflow vulnerability and he has written a nice exploit for Acunetix Web Vulnerability Scanner 8.0. As this exploit was an ascii based one I was interested in re-writing the exploit because my previous exploit was also an ascii based one. However with the emerging of bug bounties and responsible disclosure policies I’ve seen many people firing up web application security scanners against live hosts in which automated vulnerability assessments are not permitted at all. Well, by triggering this buffer overflow vulnerability we can have some fun owning the noobs 😉

Crash

When we submit a new website to be scanned by Acunetix it searches for html tags like <img src=”” >, <a href=””> to get the additional hosts from that website. So if we place an html tag in the page like (more…)

Bandizip Multiple Vulnerabilities

All these issues are patched in Bandizip 3.10 after a responsible disclosure done to the vendor.

Overview of Bandizip

Bandizip is a Lightweight, Fast and 100% free All-In-One Zip Archiver. It has a very fast Zip algorithm for compression & extraction with Fast Drag and Drop, High Speed Archiving, and Multi-core compression. It handles the most popular compression formats, including Zip, 7z, Rar, and so on.

Arbitrary DLL Injection Code Execution

Bandizip 3.09 and below version are affected with a DLL hijacking issue in which the application loads dwmapi.dll in an insecure manner.  This can be exploited to load arbitrary libraries by tricking a user into e.g. opening a file located on a remote WebDAV or SMB share. 1 You can clearly see dwmapi.dll is being searched by the application in the current directory as a result of loading it in an insecure manner.

Proof of Concept (more…)

MyBB 1.6.12 POST XSS 0day

This is a weird bug I found in MyBB. I fuzzed the input of the search.php file. This was my input given.

alert (bar) () ; // ' " > < prompt \x41 %42 constructor onload

MyBB throws out a SQL error:

[code language=”sql”]
SELECT t.tid, t.firstpost
FROM mybb_threads t
WHERE 1=1 AND t.closed NOT LIKE ‘moved|%’
AND ( LOWER(t.subject) LIKE ‘%&lt;foo&gt; &lt;h1&gt; &lt;script&gt; alert (bar) () ; //%’ LOWER(t.subject)
LIKE ‘%&gt; &lt; prompt \x41 \%42 constructor onload%’)

[/code]

fuzz1
(more…)

My Joomla XSS 0days

Last October 2013 I found some XSS vulnerabilities in Joomla! 3.1.2. Anyhow the affected versions were Joomla! version 2.5.14 and earlier 2.5.x versions and version 3.1.5 and earlier 3.0.x
versions. Actually all these XSS vulnerabilities existed on fields where we can insert links starting with http://. I first did a simple fuzz to test the output.

<foo> </bar> '" > <> ; () //

What I noticed was that it does filter out tags but still we can take advantage of these non-filtered characters. Of course we can use event handlers in JavaScript to trigger XSS.

‘; ()//"

fuzz

Persistent XSS in com_contact

To reproduce this issue follow these steps.

  • Click components -> Contacts-> Contacts. This is the URL: http://localhost/Joomla_3.1.5/administrator/index.php?option=com_contact (more…)

Ophcrack Path Subversion Arbitrary DLL Injection Code Execution

What is DLL Hijacking?

This is how Microsoft describes it

When an application dynamically loads a dynamic-link library without specifying a fully qualified path name, Windows attempts to locate the DLL by searching a well-defined set of directories in a particular order, as described in Dynamic-Link Library Search Order. If an attacker gains control of one of the directories on the DLL search path, it can place a malicious copy of the DLL in that directory. This is sometimes called a DLL preloading attack or a binary planting attack. If the system does not find a legitimate copy of the DLL before it searches the compromised directory, it loads the malicious DLL. If the application is running with administrator privileges, the attacker may succeed in local privilege elevation.

Basically when an application tries to load a DLL without specifying a fully qualified path name Windows tries to load the DLL in a order of directories. If the application attempts to load a DLL by it’s name it should go in this order of directories (x86).

  1. The directory from which the application loaded.
  2. The system directory.
  3. The 16-bit system directory.
  4. The Windows directory.
  5. The current directory.
  6. The directories that are listed in the PATH environment variable.

Overview of Ophcrack 3.6 (more…)