Since the PoC for the VMware vCenter RCE (CVE-2021-21972) is now readily available, we’re publishing our article covering all of the technical details.
In fall of 2020, I discovered couple vulnerabilities in the vSphere Client component of VMware vCenter. These vulnerabilities allowed non-authorized clients to execute arbitrary commands and send requests on behalf of the targeted server via various protocols:
Unauthorized file upload leading to remote code execution (RCE) (CVE-2021- 21972)
An unauthorized server-side request forgery (SSRF) vulnerabilities (CVE-2021-21973)
In this article, I will cover how I discovered the VMware vSphere client RCE vulnerability, divulge the technical details, and explain how it can be exploited on various platforms.
Palo Alto Networks next-generation firewall (NGFW) is one of the leading enterprise firewalls used by companies around the world to protect against various cyber-attacks. It runs on its own operating system «PAN-OS».
In this article, we will analyze the vulnerabilities that lead to:
This August, I discovered three vulnerabilities in McAfee ePolicy Orchestrator (ePO) version 5.10.0. McAfee ePO is software that helps IT administrators unify security management across endpoints, networks, data, and compliance solutions from McAfee and third-party solutions. McAfee ePO provides flexible automated management capabilities for identifying, handling, and responding to security issues and threats.
My testing uncovered three vulnerabilities:
A CSRF + SSRF + MITM chain that, if successfully exploited, allows an attacker who is not logged in to perform remote code execution on the server
Remote code execution by a logged-in user as the result of a ZipSlip attack
Today we will be analysing multiple vulnerabilities that we found in a component of Checkpoint Security Management, which is used in Check Point products. The component in question is the ICA Management Tool.
Citrix Endpoint Management, aka XenMobile, is used for managing employee mobile devices and mobile applications. Usually it is deployed on the network perimeter and has access to the internal network due to Active Directory integration. This makes XenMobile a prime target for security research.
During such research a path traversal vulnerability was discovered. This vulnerability allowed an unauthorized user to read arbitrary files, including configuration files containing passwords.
We compiled a list of several techniques for improved exploition of MSSQL injections. All the vectors have been tested on at least three of the latest versions of Microsoft SQL Server: 2019, 2017, 2016SP2.
From time to time in certain situations one needs to have a possibility to view a customer’s user screen to make some proofed screenshots or to get access to an open GUI application window which contains secrets for lateral movement while the legitimate user is connected via RDP and you don’t want to kick them out of the session.
There is a number of third-party software such as VNC, radmin, TeamViewer, etc. on the market to achieve it, but it involves additional actions such as binary delivery, its installation and so on. Moreover, these actions are too noisy and leave a lot of garbage on a remote host.
Luckily, Windows-based systems have an awesome built-in feature (as part of Remote Desktop Protocol) that is unfairly ignored or forgotten. It is called Remote Desktop Services Shadowing.
IDA Pro is the most common software for reverse engineering in the industry. It can decompile the five most common architectures (x86/x64/ARM/PowerPC/MIPS), disassemble more than a hundred rare architectures, and debug most of them.
This article is a selection of my favorite tips for IDA Pro. Let’s get to it!
Service principal names (SPNs) are records in an Active Directory (AD) database that show which services are registered to which accounts:
If an account has an SPN or multiple SPNs, you can request a service ticket to one of these SPNs via Kerberos, and since a part of the service ticket will be encrypted with the key derived from the account’s password, you will be able to brute force this password offline. This is how Kerberoasting works.
There is a way to perform the Kerberoasting attack without knowing SPNs of the target services. I’ll show how it could be done, how it works, and when it could be useful.