CVE-2023-3032

Mobatime offers various time-related products, such as check-in solutions. In versions up to 06.7.2022, an arbitrary file upload allowed an authenticated user to possibly gain remote code execution. The application makes possible to upload documentary proofs, and does not properly validate uploaded files. The latter are stored in a folder that is a child of the webroot.

A link in the interface makes possible to get access to this file, and if the uploaded file can be interpreted by the server, the user can gain remote code (and possibly command) execution.

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2024

Exploiting CVE-2024-37148

3 minute read

Intro When it comes to input sanitisation, who is responsible, the function or the caller ? Or both ? And if no one does, hoping that the other one will do t...

Exploiting CVE-2024-27096

7 minute read

Intro A few weeks ago, I discovered during an intrusion test two vulnerabilities affecting GLPI 10.0.12, that was the latest public version at this time. The...

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2023

From SSRF to authentication bypass

4 minute read

I won’t insult you by explaining once again what JSON Web Tokens (JWTs) are, and how to attack them. A plethora of awesome articles exists on the Web, descri...

Hidden in plain sight - Part 2

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A few days ago, I published a blog post about PHP webshells, ending with a discussion about filters evasion by getting rid of the pattern $_. The latter is c...

I want to talk to your managed code

12 minute read

TL;DR A few experiments about mixed managed/unmanaged assemblies. To begin with, we start by presenting a C# programme that hides a part of its payload in an...

Qakbot JScript dropper analysis

11 minute read

It was a sunny and warm summer afternoon, and while normal people would rush to the beach, I decided to devote myself to one of my favourite activities: suff...

CVE-2023-3033

3 minute read

This walkthrough presents another vulnerability discovered on the Mobatime web application (see CVE-2023-3032, same version 06.7.2022 affected). This vulnera...

CVE-2023-3032

less than 1 minute read

Mobatime offers various time-related products, such as check-in solutions. In versions up to 06.7.2022, an arbitrary file upload allowed an authenticated use...

CVE-2023-3031

less than 1 minute read

King-Avis is a Prestashop module developed by Webbax. In versions older than 17.3.15, the latter suffers from an authenticated path traversal, leading to loc...

FuckFastCGI made simpler

3 minute read

Let’s render unto Caesar the things that are Caesar’s, the exploit FuckFastCGI is not mine and is a brilliant one, bypassing open_basedir and disable_functio...

PHP .user.ini risks

7 minute read

I have to admit, PHP is not my favourite, but such powerful language sometimes really amazes me. Two days ago, I found a bypass of the directive open_basedir...

PHP open_basedir bypass

3 minute read

PHP is a really powerful language, and as a wise man once said, with great power comes great responsibilities. There is nothing more frustrating than obtaini...

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2020

Self modifying C program - Polymorphic

17 minute read

A few weeks ago, a good friend of mine asked me if it was possible to create such a program, as it could modify itself. After some thoughts, I answered that ...

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