SCRT Team Blog – Page 5 – Orange Cyberdefense Switzerland's technical blog

Public Intrusion Test of Swiss Post’s E-Voting System

Context

The Swiss Cantons have offered online voting to members of their electorate since 2004. Meanwhile, more than 200 binding trials at Federal votes and elections have taken place in 15 cantons over the years.

In order to expand online voting to a broader public, the Federal regulation obliges the Cantons to meet an additional set of requirements. These include the system feature of full verifiability, performing numerous audits and publishing the software components’ source code.

Magento – RCE & Local File Read with low privilege admin rights

I regularly search for vulnerabilities on big services that allow it and have a Bug Bounty program. Here is a second paper which covers two vulnerabilities I discovered on Magento, a big ecommerce CMS that’s now part of Adobe Experience Cloud. These vulnerabilities have been responsibly disclosed to Magento team, and patched for Magento 2.3.0, 2.2.7 and 2.1.16.

winhttpd writeup: private heaps pwning on Windows

Following last week-end’s Insomni’hack teaser and popular demand, here is a detailed write-up for my winhttpd challenge, that implemented a custom multi-threaded httpd and was running on the latest version of Windows 10:

PHPMyAdmin multiple vulnerabilities

During an assignment, I found several serious vulnerabilities in phpMyAdmin, which is an application massively used to manage MariaDB and MySQL databases. One of them potentially leads to arbitrary code execution by exploiting a Local file inclusion, while the other is a CSRF allowing any table entry to be edited.

Remote Code Execution on a Facebook server

I regularly search for vulnerabilities on big services that allow it and have a Bug Bounty program. Here is my first paper which covers a vulnerability I discovered on one of Facebook’s servers.

While scanning an IP range that belongs to Facebook (199.201.65.0/24), I found a Sentry service hosted on 199.201.65.36, with the hostname sentryagreements.thefacebook.com. Sentry is a log collection web application, written in Python with the Django framework.

Insomni’hack 2018 – vba03-strikeBack writeup

Here is a write-up for the challenge “vba03-strikeBack”, since none was posted yet on CTFtime.

All the source code for the malware and cookie logger are available on GitHub.

WPA2 KRACK – What you should know so far … (in simple terms)

As most people, we have been waiting for the release of the technical details surrounding the WPA2 vulnerabilities discovered by Mathy Vanhoef (@vanhoefm).

While the details and the full paper (https://papers.mathyvanhoef.com/ccs2017.pdf) are now available, here is a summary aimed at providing the big picture as well as a few recommendations about this attack.

PassFilt.dll – Complexifier sa politique de mot de passe Windows

La gestion des mots de passe en entreprise est un challenge très complexe à appréhender. Les bonnes pratiques que l’on peut trouver un peu partout sont toutes d’accord pour augmenter la taille minimum d’un mot de passe tout en imposant un mélange de tous types de caractères.

Numerous Swiss domain names temporarily hijacked

Last Friday at around 14:05 we noticed that our website (www.scrt.ch) along with some other services we use internally were no longer accessible. We immediately tried to figure out why that was and quickly noticed that our DNS requests were not returning the correct IP addresses.

A pentester’s take on (Not)Petya

By now, everybody has probably read many articles on the latest viral outbreak, ranging from detailed analysis of the virus itself to rants about why companies don’t apply updates in a timely fashion and why employees continue to open malicious attachments in emails.