Bold Statements
Since BlackNurse was released on 10th of November, we asked ourselves whether this problem does also apply to ICMPv6 traffic. To answer this question, Christian Tanck (one of our students) build a lab with several firewall appliances. Kudos to him for testing and the following blog post.
Continue reading “Some Notes from the Lab – BlackNurse in the IPv6 Era”
Continue readingHi everybody,
This is the second entry in our research diary on IP cameras. If you haven’t done so yet, you should read the first entry in advance. This time we focused more on analysis and exploitation.
After running a vulnerability scan on both devices, it was revealed that the M1033 has multiple buffer overflow vulnerabilities (CVE-2012-5958 to CVE-2012-5965), which are readily exploitable via Metasploit. This gave us another shell (in addition to the root shell mentioned in the last post), though this time it was not a root shell. By using the find command, we searched for executables having the setuid or setgid bit set. We hoped to use one of those to escalate privileges. To do so yourself add the parameter -perm -4000 to find and it will search for files having the setuid bit set. If you try that on your own unix-like device, for example it should yield /bin/passwd which is perfectly reasonable as you’re able to change your password without being root.
Continue reading “Research Diary: IP-Cameras Part 2”
Continue readingAs you probably know we perform research on a regular basis at ERNW. This post is the first entry on our – Benjamin’s and Pascal’s – research diary. You might already have seen Oliver’s post on setting up an research environment or Brian’s posts on IoT botnets (here and here). With that in mind we want to take a look at one of the market leaders for network camera equipment: AXIS.
Continue reading “Research Diary: IP-Cameras”
Continue readingDear Readers,
just recently i bought a wireless plug on Amazon with the main use of controlling my coffee machine with an app. The installation of the wireless plug was quite easy and only requires me to set my Wifi SSID and my passphrase – that’s it. But what happened behind the scenes? I visited the control interface of my router and saw that along with the other devices there was a new one with the network name HF-LPB100 and a local IP address in my case 192.168.0.235. First of all i wondered about the name itself, but ignored that and kept on looking for open ports.
Continue reading “IoT the S is for Secure – Unknown Administration Interface in Wireless Plug”
Continue readingSorry about the larger delay between the previous post and this one, but I was very busy the last weeks.
(And the technology I wanted to show wasn’t completely implemented in radare2, which means that I had to implement it on my own 😉 ). In case you’re new to this series, you’ll find the previous posts here.
As you may already know, we’ll deal with the third challenge today. The purpose for this one is to introduce
some constructs which are often used in real programs.
Continue reading “Reverse Engineering With Radare2 – Part 3”
Continue readingAs you might have read, I recently had a closer look at how easy it actually is to become part of an IoT Botnet. To start a further discussion and share some of my findings I gave a quick overview at the recent Dayton Security Summit. The Mirai Botnet was supposed to be one of the case studies here. But the way things go if one starts diving into code…I eventually gave an overview of how the Mirai Bot actually works and what it does. As such: Here a quick summary of the Mirai Botnet bot.
Continue reading “A Quick Insight Into the Mirai Botnet”
Embedded devices often serve as an entry point for an attack on a private or corporate network. The infamous attack on HackingTeam, for example, followed exactly this path as was revealed here. Although the attack may have been for the greater good (refer also to this great keynote), such incidents demonstrate that it is important to properly secure your embedded devices. In a recent blog post, Niklaus presented how he analyzed the security posture of a MAX! Cube LAN Gateway. Moreover, Brian reported a few weeks ago on the security posture of IoT devices (and in particular on one of his cameras). With this post I would like to share my experiences with analyzing another embedded device: the IC-3116W IP camera by Edimax. Continue reading “Setting up a Research Environment for IP Cameras”
Continue readingSome of you (especially the .Net guys) might have heard of the query language Linq (Language Integrated Query) used by Microsoft .Net applications and web sites. It’s used to access data from various sources like databases, files and internal lists. It can internally transform the accessed data in application objects and provides filter mechanisms similar to SQL. As it is used directly inside the application source code, it will be processed at compile time and not interpreted at runtime. While this provides a great type safety and almost no attack surface for injection attacks (except from possible handling problems in the different backends), it is extremely difficult to implement a dynamic filter system (e.g. for datatables which should allow users to select the column to filter on). That’s probably the reason why Scott Guthrie (Executive Vice President of the Cloud and Enterprise group in Microsoft, also one of the founders of the .Net project) presented the System.Linq.Dynamic package as part of the VS-2008 samples in 2008. This library allows to build Linq queries at runtime and therefore simplify dynamic filters. But as you may know, dynamic interpretation of languages based on user input is most of the time not the best option….
Continue reading “Linq Injection – From Attacking Filters to Code Execution”
Continue readingIn course of a recent research project, I had a look at SolarWinds DameWare, which is a commercial Remote Access Software product running on Windows Server. I identified a remote file download vulnerability in the download function for the client software that can be exploited remotely and unauthenticated and that allows to download arbitrary files from the server that is running the software.
Continue reading “DameWare Vulnerability”
Continue readingI suppose there are many people out there who want to achieve a greater good, fight evil corp and “show those guys”. So why not set a statement and become part of a botnet? #Irony!!! Of course I suppose (hope) that none of you actually want to be part of something like an IoT botnet, but joining could in theory be dead easy. So quite a while back I bought a dead cheap WiFi camera for use at home. It was kind of just as insecure as I had expected, so it got it’s own VLAN and stuff and here is why….
Continue reading “How to Become Part of an IoT Botnet”
Continue reading