Events

35C3: Refreshing Memories

Hello fellow Troopers and Happy new Year!

35C3 is over, and the recordings are available so in case you did not have the chance or the time to watch the live streams during the holidays or overwhelmed with the number of talks, see in the following a list of recommended talks to fill your evenings or weekends. Apart from the broad coverage of topics in different areas (Ethics, Society & Politics, Hardware & Making, Resilience, Art and Culture, Security, Science, Resilience), foundation talks were aiming for the very basics following this year’s motto “Refreshing Memories.”

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Breaking

Cisco: Magic WebEx URL Allows Arbitrary Remote Command Execution – Project Zero

Tavis did it again[1]. As stated in the title it is possible to remotely execute commands via the Chrome extension for the popular meeting software Cisco WebEx. This post summarizes the most relevant information for you.

A test page with working demo code is available to check for the issue on Windows systems [2]. From our point of view the Chrome extension is affected by this issue as well as the Firefox extension as both extension APIs are quite similar. However, Mozilla blocked the FireFox plugin to protect users from the risk of being exploited through the plugin[3][4]. IE seems to be fine thanks to Cisco’s decision to invoke the WebEx Meeting Center via e.g. ActiveX.

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Breaking

Some infos about SAP Security Note 2258786

On the 8th of March SAP released the security note for a vulnerability we reported during an assessment of a SAP landscape. The issue affects the SAP NetWeaver Web Administration Interface.  By knowing a special URL a malicious user can acquire version information about the services enabled in the SAP system as well as the operating system used.  We wanted to share some details on the issue.

The vulnerability is a bypass of the HTTP Basic Authorization for the SAP Web Administration Interface. It discloses version information about the system respectively operating system, a brief SAP patch level overview and running services including their corresponding ports.

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Events

ERNW@HAXPO/HITB 2015

Last week we enjoyed quite a wonderful HAXPO exhibition and HITB conference in Amsterdam. A number of great talks could be heard at the main HITB conference such as “Bootkit via SMS: 4G Access Level Security Assessment” or “Stegosploit: Hacking with Pictures“. And not only that: there were also several engaging hands-on workshops.

Apart from the main conference, there was the HAXPO – a hacker exhibition. At this exhibition you could connect with people from different companies, get a lot of merchandise, and also listen to several briefings on security and its philosophy. Fortunately, we had the pleasure to present two of these briefings and maybe you tested your web application skills at the ERNW booth.

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Breaking

HackRF One the story continues…

Hello fellow frequency hoppers,

once again, we welcomed Michael Ossmann at the ERNW headquarters for fun with SDR. This time with Mike´s advanced SDR workshop. And to be up front about it…it was plain awesome. For everybody who is not familiar with Software Defined Radio (SDR): Let’s regard it as the ultimate tool when working with radio signals. Take a look a this to learn more.

Mike showed us the new revision of his HackRF One and explained us some more advanced techniques when it comes to Radio Frequnecies hacking. Compared to last time, the workshop focused on reversing signals and how to synthesize them. So this time we were crafting RF packets ourselves instead of just replaying a capture. This introduces different attack types which can be carried out over the air for  example bruteforcing or fuzzing of radio devices.

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