Tag: exploit

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.

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Exploiting a misused C++ shared pointer on Windows 10

In this post I describe a detailed solution to my “winworld” challenge from Insomni’hack CTF Teaser 2017. winworld was a x64 windows binary coded in C++11 and with most of Windows 10 built-in protections enabled, notably AppContainer (through the awesome AppJailLauncher), Control Flow Guard and the recent mitigation policies.

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Insomni’hack finals – smtpwn writeup

This challenge was solved by several teams during the contest, however it seems that most teams didn’t have the intended solution, so here it is 😉
The source, binary and exploit for this challenge can be found on our github here!
smtpwn was a very simple local SMTP service. Basically you write a message to its stdin, and it’ll write a file to /tmp/ with the following content:

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