Compass Security Blog

Offensive Defense

Author: Alexandre Herzog (page 1 of 3)

Aftermath of the Netgear Advisory Disclosure

Update – 13.10.2015: Netgear published a new firmware (version 1.1.0.32) which fixes the reported authentication bypass. My most recently appointed colleague, Daniel Haake, described in the previous blog article “Authentication Bypass in Netgear WNR1000v4 Router” how he found an authentication bypass in commonly used Netgear firmwares. Due to the rediscovery of the issue and its […]

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Presentation about Windows Phone 8.1

Earlier this month, my colleague Cyrill Bannwart and I held two Compass Security Beer Talk presentations in Bern and Jona about Windows Phone 8.1 security. The slides are now online and cover: Our (unsuccessful) black box attempts to break out from a Windows perspective A review of the implemented security features in Windows Phone 8.1 from a mobile perspective Our findings […]

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Security Advisories for SAP BusinessObjects Explorer and neuroML

Compass Security employees identify and report on a regular basis security vulnerabilities as part of their daily assessments (or just out curiosity). Stefan Horlacher identified and reported back in June 2013 several flaws in SAP BusinessObjects Explorer. We’re happy to publish today the details as the flaws have been patched and a reasonable grace period […]

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Disabling Viewstate’s MAC: why you deserve having now a broken ASP.NET web application

Lots of things happened since my first (and unique) blog post about ASP.NET Viewstate and its related weakness. This blog post will not yet disclose all the details or contain tools to exploit applications, but give some ideas why it’s really mandatory to both correct your web applications and install the ASP.NET patch. Back in […]

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iPhone & iPad Security Kurs in Bern

Mobile Geräte sind ein wesentlicher Teil unseres Lebens, sowohl im Privaten als auch im Unternehmensumfeld. Diesen September führt Compass Security das erste Mal in Bern den iPhone & iPad Security Kurs durch. Was sind die Sicherheitskonzepte bei iOS-Geräten? Wie können iOS-Devices ins Unternehmensumfeld eingebunden werden? Welches sind die gängigen Angriffe und wie kann man sich […]

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Advisories regarding Leed and Secure Entry Server (SES)

Today I’m happy to release the following security advisories: SQL injection in Leed (CSNC-2013-005 / CVE-2013-2627) Cross-site request forgery in Leed (CSNC-2013-006 / CVE-2013-2628 Authentication bypass in Leed (CSNC-2013-007 / CVE-2013-2629) URL redirection in Secure Entry Server (SES) I would take the opportunity to thanks Valentin CARRUESCO aka Idleman for the timely patches he implemented […]

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ASFWS slides and OWASP meeting tomorrow

As announced a while ago, I had the chance to organize both a workshop about our hacking-lab.com and present my talk “Advances in secure (ASP).NET development – break the hackers’ spirit” at the AppSec Forum Western Switzerland in Yverdon-les-Bains last week. I hope to soon summarize the conferences I attended in an upcoming blog article. […]

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Compass Security at ASFWS in Yverdon-les-Bains

Compass Security is proud to be part and sponsor of the Application Security Forum – Western Switzerland (ASFWS), a conference about application, identity and cyber security which will be take place in a week’s time in Yverdon-les-Bains (15-16 October 2013). I will run the AppSec Lab 1 (featuring the Hacking-Lab), on Wednesday 16 October in the […]

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Microsoft Security Bulletin MS13-067 – Critical

As part of today’s monthly patch day, Microsoft fixed an issue I reported in September 2012 around (ASP).NET and SharePoint. The vulnerability opens a new type of attack surface on ASP.NET if a given precondition regarding the Viewstate field is met. The impact is at least a breach of data integrity on the server side resulting […]

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Access control in Windows

According to [Access Control, 2013], “Access control refers to security features that control who [sic] can access resources in the operating system. Applications call access control functions to set who can access specific resources or control access to resources provided by the application.” The Windows access control model is founded on two base components: access […]

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