Our workshop “TLS in the enterprise” was held for the first time at Troopers 2018 and was our special contribution to the IT Security world to increase the usage of TLS and point out the pitfalls, when switching to TLS.
But time is changing and TLS is a kind of standard nowadays, at least when looking at HTTPS, but there are still a lot of things to do regarding other protocols like
Continue readingThe next major release of DirectoryRanger is now available for customers, and for everyone who would like to try it ;-). Current attacks show that quite often the topic of Active Directory Security is not on the security agenda, but it should be, and this was the reason for us to build the tool and, of course, to maintain and improve it. So what are the major new features released with DirectoryRanger 1.5.0? Here we go:
Continue readingWith version 1.1.0 our tool DirectoryRanger introduces a new feature: informational audit checks. These checks do not have a severity rating because they are just “for your information” and the included information might or might not contain security issues, depending on other facts. But these checks can help to reduce your Active Directory attack surface by pointing you to some aspects which need your attention and at least require to be discussed and documented (and they might also imply governance measures like a risk acceptance).
Continue readingAs our journey to the new product continues we are facing the typical challenges of phase 2 in the software development life cycle, the design phase (see part 1 for the overview of the phases):
The new tool will deal with Active Directory security so it has to integrate into large scale Windows based customer environments, which in turn makes the decision about the components quite easy ;-). We have chosen .NET as our primary development platform including key components from Microsoft to run our application, these components include the IIS and Microsoft SQL Express/Server and of course one Windows Server.
Continue readingERNW has a new baby, so please say “hello” to the new ERNW SecTools GmbH ;-).
But why another ERNW company? Short answer: Because we want to contribute to changing the way how software is built today: insecure, focused on profit and sometimes made by people who ignore lessons from history. So how can we contribute in this space? Start changing it ;-).
Confucius said: “The man who moves a mountain begins by carrying away small stones” and that’s our way to go. It is not about building error free or unbreakable software, it is about changing the way how software is built today, about improving security and about raising the bar.
Continue readingOur new workshop about TLS/SSL in the enterprise will be held for the 1st time at Troopers 2018. So I would like to take the opportunity and post a short teaser about stuff we will cover in this workshop.
TLS/SSL is a complicated topic especially in enterprise environments due to the fact, that
In the workshop we will cover all these points, discuss them and share our experience regarding feasibility and useful mitigating controls. We will explain the most common SSL vulnerabilities/attacks, demonstrate tools to test (and sometimes to exploit) them, point out pitfalls and recommend what to do. Let us have a look at one example, Heartbleed:
Continue readingOur new workshop about mobile application testing, held for the 1st time at the Troopers conference 2013, is coming closer. So I would like to take the opportunity and post an appetizer for those who are still undetermined if they should attend the workshop ;-).
While the topic of mobile application testing is a wide field that may contain reverse engineering, secure storage analysis, vulnerability research, network traffic analysis and so forth, in the end of the day you have to answer one question: Can I trust this application and run it on my enterprise devices? So first you have to define some criteria, which kind of behavior and characteristics of an application you regard as trustworthy (or not). Let us peek at malware … besides harming your devices and data, malware is typically:
Continue readingMicrosoft takes this vulnerability quite serious and was acting fast. The Microsoft Security Response Center announced the availability of a fix last night in the MSRC Blog.
The fix will be available via Windows Update on friday, the 21st of september. So it’s time to get ready for this update ;-).
Have a nice day
Michael
Actually a Windows Vulnerability (Microsoft Advisory 2757760) related to the Internet Explorer Version 7, 8 and 9 is in the news. Microsoft is aware of the problem, but there’s no patch available yet. We call this a 0-Day :-). Making the problem even worse, on monday reliable exploit code was released within the Metasploit project, so exploit code is already in the wild.
Basically Microsoft suggests two workarounds:
But both of them have some impact: EMET must be deployed before any usage (btw. EMET can be configured via Group Policies) and disabling Active X and Active Scripting might break some business relevant web sites (that can be added to the “Trusted Sites” Zone, but might produce major operational effort).
Continue readingSome days ago another advisory related to a web application firewall (WAF) product was published. This time the product Airlock by Ergon was affected by a vulnerability that combines Encoding and NULL Byte attacks to circumvent the pattern based detection engine. We have described these attacks in detail in our newsletter “Web Application Firewall Security and The Swiss Army Knife for Web Application Firewalls” because they belong to a well known category of attacks against WAFs.
Continue reading