Archive | November, 2007

Apple Fixes ‘Misleading’ Leopard Firewall Settings

Outsmart Malicious Hackers


Apple has admitted that is has at LEAST three serious design weaknesses in it’s new application based firewall being rolled out with Mac OS X ‘Leopard’.

It comes (somewhat oddly) only 24 hours after a Mac OS X security update that fixed 41 OS X and Safari security vulnerabilities.

Previously independent researchers proved that Apple’s claim that the Leopard firewall could block all incoming connections was false.

In an advisory accompanying the Mac OS X v10.5.1 update, Apple admitted that the “Block all incoming connections” setting for the firewall is misleading.

“The ‘Block all incoming connections’ setting for the Application Firewall allows any process running as user “root” (UID 0) to receive incoming connections, and also allows mDNSResponder to receive connections. This could result in the unexpected exposure of network services,” Apple said.

With the fix, the firewall will more accurately describe the option as “Allow only essential services”, and by limiting the processes permitted to receive incoming connections under this setting to a small fixed set of system services, Apple said

Sounds like they are back-pedaling rather fast. They also addressed two other issues with the application based firewall.

CVE-2007-4703: The “Set access for specific services and applications” setting for the Application Firewall allows any process running as user “root” (UID 0) to receive incoming connections, even if its executable is specifically added to the list of programs and its entry in the list is marked as “Block incoming connections”. This could result in the unexpected exposure of network services.

CVE-2007-4704: When the Application Firewall settings are changed, a running process started by launchd will not be affected until it is restarted. A user might expect changes to take effect immediately and so leave their system exposed to network access.

So watch out, Apple is not the panacea of security as some people claim it to be.

Source: ZDNet

Posted in: Apple, Hacking News

Topic: Apple, Hacking News


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sqlninja 0.2.1-r1 – SQL Injection Tool for MS-SQL Released for Download

Keep on Guard!


Sqlninja is a tool targeted to exploit SQL Injection vulnerabilities on a web application that uses Microsoft SQL Server as its back-end. Its main goal is to provide a remote shell on the vulnerable DB server, even in a very hostile environment. It should be used by penetration testers to help and automate the process of taking over a DB Server when a SQL Injection vulnerability has been discovered.

It is written in perl and so far has been successfully tested on:

  • Linux
  • FreeBSD
  • Mac OS X

Features

  • Fingerprint of the remote SQL Server (version, user performing the queries, user privileges, xp_cmdshell availability, DB authentication mode)
  • Bruteforce of ‘sa’ password (in 2 flavors: dictionary-based and incremental)
  • Privilege escalation to sysadmin group if ‘sa’ password has been found
  • Creation of a custom xp_cmdshell if the original one has been removed
  • Upload of netcat (or any other executable) using only normal HTTP requests (no FTP/TFTP needed)
  • TCP/UDP portscan from the target SQL Server to the attacking machine, in order to find a port that is allowed by the firewall of the target network and use it for a reverse shell
  • Direct and reverse bindshell, both TCP and UDP
  • DNS-tunneled pseudo-shell, when no TCP/UDP ports are available for a direct/reverse shell, but the DB server can resolve external hostnames (check the documentation for details about how this works)

What’s New

  • A new flavor of bruteforce attack, performed remotely on the target DB Server by using its own CPU resources (use it with caution !)
  • Detection of the authentication mode (mixed or Windows-only), which is useful to understand whether the bruteforce attack to the ‘sa’ account can succeed or not
  • Documentation is now in HTML format, which should make things much easier for new users
  • Several bugfixes and minor improvements

You can download sqlninja 0.2.1-r1 here:

sqlninja 0.2.1-r1

Or read more here.

Posted in: Database Hacking, Hacking Tools

Topic: Database Hacking, Hacking Tools


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The World’s Biggest Botnets – Peer to Peer

Keep on Guard!


So what’s coming next, after Storm you might ask. You might remember Storm Worm Descending on Blogspot recently and other news about Botnets spiraling out of control accounting for almost 25% of online computers.

Well apparently next will be p2p or peer to peer Botnets which could literally blow Storm away.

You know about the Storm Trojan, which is spread by the world’s largest botnet. But what you may not know is there’s now a new peer-to-peer based botnet emerging that could blow Storm away.

“We’re investigating a new peer-to-peer botnet that may wind up rivaling Storm in size and sophistication,” says Tripp Cox, vice president of engineering for startup Damballa, which tracks botnet command and control infrastructures. “We can’t say much more about it, but we can tell it’s distinct from Storm.”

It’s hard to imagine anything bigger and more complex than Storm, which despite its nefarious intent as a DDOS and spam tool has awed security researchers with its slick design and its ability to reinvent itself when it’s at risk of detection or getting busted. Storm changed the botnet game, security experts say, and its successors may be even more powerful and wily.

Interesting developments, I’ll certainly be watching out for this and see what happens. This next generation could open up some DDoS attacks of never seen before proportions (I’m talking the ability to take whole countries offline).

Information warfare? Cyber Terrorism? Yes it’s getting very real.

Botnets are no longer just annoying, spam-pumping factories — they’re big business for criminals. This shift has even awakened enterprises, which historically have either looked the other way or been in denial about bots infiltrating their organizations.

“A year ago, the traditional method for bot infections was through malware. But now you’re getting compromised servers, with drive-by downloads so prevalent that people are getting infected without realizing it,” says Paul Ferguson, network architect for Trend Micro. “No one is immune.”

So watch out, and do educate people wherever you can about the dangers of Malware and safe surfing. A little Firefox here, a little NoScript there, a copy of Avast and a few instructions solve most problems.

Source: Dark Reading

Posted in: Malware

Topic: Malware


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Medusa 1.4 – Parallel Password Cracker Released for Download

Keep on Guard!


It’s been a long time coming but here it is, after almost a year (Remember Medusa 1.3?) finally version 1.4 is here!

Version 1.4 of Medusa is now available for public download!

What is Medusa? Medusa is a speedy, massively parallel, modular, login brute-forcer for network services created by the geeks at Foofus.net.

The Key Features are as follows:

  • Thread-based parallel testing. Brute-force testing can be performed against multiple hosts, users or passwords concurrently.
  • Flexible user input. Target information (host/user/password) can be specified in a variety of ways. For example, each item can be either a single entry or a file containing multiple entries. Additionally, a combination file format allows the user to refine their target listing.
  • Modular design. Each service module exists as an independent .mod file. This means that no modifications are necessary to the core application in order to extend the supported list of services for brute-forcing.

It currently has modules for the following services:

  • CVS
  • FTP
  • HTTP
  • IMAP
  • MS-SQL
  • MySQL
  • NCP (NetWare)
  • NNTP
  • PcAnywhere
  • POP3
  • PostgreSQL
  • rexec
  • rlogin
  • rsh
  • SMB
  • SMTP (AUTH/VRFY)
  • SNMP
  • SSHv2
  • SVN
  • Telnet
  • VmAuthd
  • VNC

It also includes a basic web form module and a generic wrapper module for external scripts.

While Medusa was designed to serve the same purpose as THC-Hydra, there are several significant differences. For a brief comparison, see here.

It’s been over a year since version 1.3 was released and there has been a bunch of changes. This release includes multiple bug fixes, several new modules and additional module functionality. A somewhat detailed report is available here

You can download Medusa 1.4 here:

medusa-1.4.tar.gz

Or read more here.

Posted in: Hacking Tools, Password Cracking

Topic: Hacking Tools, Password Cracking


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Doubleclick Involved in Malware Distribution

Keep on Guard!


We recently reported on thousands of people being hooked by big sites distributing malware, it now seems Doubleclick was the one at fault.

It’s a pretty neat trick and a good spin on Social Engineering leveraging on the trustworthy nature of the sites.

CNN even?

Rogue anti-spyware software that pushes fraudulent PC scans has found its way onto DoubleClick and legitimate sites, including CNN, The Economist, The Huffington Post and the official site of the Philadelphia Phillies.

DoubleClick officials told eWEEK that they have recently implemented a security monitoring system to catch and disable a new strain of malware that has spread over the past several months. This system has already captured and disabled about 100 ads, the company said in a statement, although it didn’t mention this episode in particular.

The bogus anti-spyware onslaught is only part of a bigger wave that’s also included porno ads being swapped for normal ads on sites such as The Wall Street Journal. It’s not yet clear whether the same fraudsters are behind both the porn and the fraudulent anti-spyware ads.

I really hope they do put some serious measure in place that don’t just use a signature for this particular case…something a little more intelligent I hope.

Sunbelt Software has confirmed that Trojans were being downloaded from ads served by DoubleClick as recently as Nov. 11. This malware is the kind that repeatedly pops bogus warning messages about computer infections in users’ faces until they give up in despair and pay $30 to $40 for a junk “security” program.

“The stuff that’s installed is this rogue anti-spyware software that … gives you fake alerts, [such as] ‘Your computer is infected, you must run this.’ Basically it’s extortion. … They try to push you to buy their software,” Sunbelt President Alex Eckelberry told eWEEK.

The malware application is a variant on WinFixer, a piece of malware that pretends to be a diagnostic tool.

I hope we can educate people about these kind of things, sad to say as some of the comments mentioned in the previous post…a lot of people will fall for this – why? Simply because they don’t know any better.

Source: eWeek

Posted in: Malware, Social Engineering

Topic: Malware, Social Engineering


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Inguma 0.0.5 Released for Download – Penetration Testing Toolkit

Keep on Guard!


Inguma is a free penetration testing and vulnerability discovery toolkit entirely written in python. Framework includes modules to discover hosts, gather information about, fuzz targets, brute force usernames and passwords, exploits, and a disassembler.

We did mention it back in August when it first hit the streets.

With new QT interface:

Inguma Interface

If you haven’t used it for a while there’s a WHOLE lot of new stuff, it was pretty basic when we first mentioned it but it’s fairly comprehensive now with the addition of a disassembler, a fuzzer, a bunch of libraries, exploits and brute-forcers.

Most of the bugs have been fixed so it’s pretty stable.

You can download Inguma 0.0.5 here:

inguma-0.0.5.1.tar.gz

Or read more here.

Posted in: Exploits/Vulnerabilities, Hacking Tools, Password Cracking

Topic: Exploits/Vulnerabilities, Hacking Tools, Password Cracking


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