GoSecure Blog
Beware of the Magic SpEL(L) – Part 1 (CVE-2018-1273)
This February, we ran a Find Security Bugs scan on over at least one hundred components from the Spring Framework, including the core components (spring-core, spring-mvc) but also optional components (spring-data, spring-social, spring-oauth, etc.). From this...
How I Indexed the Darknet and Pastebin During My First University Internship
This blog is the outcome of my 4 months of internship at GoSecure. This research internship was goal oriented and I had to pick out of 5 different research projects. I selected a topic I knew little about in order to challenge myself: crawling and indexing data.
Beyond XSS: Edge Side Include Injection
Update: A new blog post has been published as a follow up to this article : ESI Part 2: Abusing specific implementations. Abusing Caching Servers into SSRF and Client-Side Attacks While conducting a security assessment, we noticed an unexpected behavior in the...
IDC Technology and Customer Spotlights
A few months ago, the International Data Corporation (IDC) conducted a Technology Spotlight and a Customer Spotlight on our company. The two reports: Advanced Managed Security in a New Era: Simple Steps to Rapid Response Advanced Managed Security and Yellow Pages: Better Security, Great User Experience reaffirm our position as a high-quality provider of managed security services, one that follows a flexible and customer-centric approach.
Chaos: a Stolen Backdoor Rising Again
This post describes a backdoor that spawns a fully encrypted and integrity checked reverse shell that was found in our SSH honeypot, and that was presented at GoSec 2017 in Montreal. We named the backdoor ‘Chaos’, following the name the attacker gave it on the system. After more research, we found out this backdoor was originally part of the ‘sebd’ rootkit that was active around 2013.
