Attack Blogs

Introduction On January 10, 2023, ManageEngine released a security advisory for CVE-2022-47966 (discovered by Khoadha of Viettel Cyber Security) affecting a wide range of products. The vulnerability allows an attacker to gain remote code execution by issuing a HTTP POST request containing a malicious SAML response. This vulnerability is a result of  using an outdated…

Introduction The recent ManageEngine CVE-2022-47966 is a pre-authentication remote code execution vulnerability. Depending on the specific ManageEngine product, this vulnerability is exploitable if SAML single-sign-on is enabled or has ever been enabled. ManageEngine products are some of the most widely used across enterprises and perform business functions such as authentication, authorization, and identity management. Given the nature…

After compromising a Windows domain controller, one of the actions that NodeZero, our autonomous pentest product, performs is dumping all domain user password hashes from the Active Directory database. This is a common attacker technique, and the resulting dump is highly valuable to attackers. But did you know that this data is a great source…

On Tuesday, October 25 a new OpenSSL hot-fix release was announced which will patch a critical vulnerability that exists within the v3.0.X branch. OpenSSL 3.0.7 will be released on Tuesday, November 1 and in tandem the details of the vulnerability and its associated CVE will be made public. OpenSSL is an open source project that…

Fortinet recently patched a critical authentication bypass vulnerability in their FortiOS, FortiProxy, and FortiProxySwitchManager projects (CVE-2022-40684). This vulnerability gives an attacker the ability to login as an administrator on the effected system. To demonstrate the vulnerability in this writeup, we will be using FortiOS version 7.2.1

Introduction The recent FortiOS / FortiProxy / FortiSwitchManager CVE has been reportedly exploited in the wild. We would like to provide additional insight into the vulnerability so users can begin to determine if they have been compromised. In this post we discuss enabling logging and IOCs for FortiOS 7.2.1. These steps will likely work on…

It's been more than six months since the Log4Shell vulnerability (CVE-2021-44228) was disclosed, and a number of post-mortems have come out talking about lessons learned and ways to prevent the next Log4Shell-type event from happening.

VMware recently patched a critical authentication bypass vulnerability in their VMware Workspace ONE Access, Identity Manager and vRealize Automation products (CVE-2022-22972). This vulnerability allows an attacker to login as any known local user.

F5 recently patched a critical vulnerability in their BIG-IP iControl REST endpoint CVE-2022-1388. This vulnerability particularly worrisome for users because it is simple to exploit and provides an attacker with a method to execute arbitrary system commands.

Log4Shell is a "once-in-a-decade" type of vulnerability that will linger in environments for years to come. For a vulnerability with such a broad, lasting impact, it's important to establish a principled and disciplined approach for discovering and remediating it. NodeZero both detects and exploits Log4Shell, surfacing a wealth of information that can be used to…