Hackers are developing new software that will help hide browser attack code from some types of security software.

The software, called VoMM (eVade o’ Matic Module), uses a variety of techniques to mix up known exploit code so as to make it unrecognizable to some types of antivirus software.

Using these techniques, VoMM “can create an endless number of variants of an exploit,” said Aviv Raff, one of the developers behind the project.

“It aims to provide several techniques out of the box to make browser exploits (mostly) undetectable,” according to a blog posting by one of the project’s founders, a hacker going by the name of “LMH.” That posting can be found here.

The software users server-side scripting technology to create new versions of the exploit code, which then get delivered to browser users when they visit the attacker’s Web site. By making a number of cosmetic changes to the code that do not affect its functionality, VoMM creates a new version of the malicious software that cannot be detected by “signature-based” techniques.

Signature-based antivirus products analyze known malware and then create a digital fingerprint that allows the antivirus software to identify malicious code. By adding extra components — tabs and spaces, and random comments and variable names — that are not included in known signatures, VOMM creates software that can evade detection.

The VoMM code is expected to be included in a new module for the upcoming 3.0 version of the widely used Metasploit hacking toolkit, Raff said. Metasploit developer HD Moore is also developing the VoMM software. Raff’s blog posting on the project can be found here.

Source: Infoworld

Get ready for a complete month of fun with H D Moore’s Month of Browser Bugs.

Quoting from Browser Fun blog:

This blog will serve as a dumping ground for browser-based security research and vulnerability disclosure. To kick off this blog, we are announcing the Month of Browser Bugs (MoBB), where we will publish a new browser hack, every day, for the entire month of July. The hacks we publish are carefully chosen to demonstrate a concept without disclosing a direct path to remote code execution. Enjoy!

He say’s he has plenty of vulnerabilities to go around.

You can also read his post at Metasploit’s blog.

Internet Storm Center’s always informative Diary has some good information.

At the urging of Handler Extraordinaire Kyle Haugsness, I tested the sploit on a box with software-based DEP and DropMyRights… here are the results:

Software-based DEP protecting core Windows programs: sploit worked
Software-based DEP protecting all programs: sploit worked
DropMyRights, config’ed to allow IE to run (weakest form of DropMyRights protection): sploit worked
Active Scripting Disabled: sploit failed

So, go with the last one, if you are concerned. By the way, you should be concerned.

It didn’t take long for the exploits to appear for that IE vulnerability. One has been making the rounds that pops the calculator up (no, I’m not going to point you to the PoC code, it is easy enough to find if you read any of the standard mailing lists), but it is a relatively trivial mod to turn that into something more destructive. For that reason, SANS is raising Infocon to yellow for the next 24 hours.

Microsoft recommends you turn Active Scripting OFF to protect against this vulnerability.

Source: ISC

Yah I know, yet another reason to dump Internet Explorer and grab Firefox, not that anyone reading this site would be using Internet Exploder..

The code is along the lines of:

<code><input type=”checkbox” id=’c'>
<script>
r=document.getElementById(“c”);
a=r.createTextRange();
</script></code>

You can find the Bleeding Snort rule for the IE Exploit here.

Microsoft has now confirmed this.

“We’re still investigating, but we have confirmed this vulnerability and I am writing a Microsoft Security Advisory on this,” writes Lennart Wistrand, security program manager with the Microsoft Security Response Center, in a blog posting. “We will address it in a security update.”

There is also a 3rd party fix for this from eEye.