Attack Research

NodeZero compromises the "Active" machine on Hack The Box by chaining classic Active Directory vulnerabilities: GPP password exposure, Kerberoasting, and CVE-2020-1472 (ZeroLogon). This advanced walkthrough builds on earlier feedback and demonstrates multiple escalation paths to Domain Admin.

In August, Orange Tsai released details and also spoke at BlackHat and DEFCON detailing his security research into Microsoft Exchange. His latest blog post details a series of vulnerabilities dubbed ProxyShell. ProxyShell is a chain of three vulnerabilities: CVE-2021-34473 - Pre-auth Path Confusion leads to ACL Bypass CVE-2021-34523 - Elevation of Privilege on Exchange PowerShell Backend CVE-2021-31207 - Post-auth Arbitrary-File-Write leads to…

The engineering team has been working tirelessly to improve the "what to wow" user experience, add more attack content, add indicators of best practices and improve analytical insights. Improving our "what to wow" user experience – In security, there are two types of findings: critical problems that require you skip lunch, or cancel plans with…

NodeZero exploited EternalBlue on HTB’s Blue machine to gain system access and dump credentials, showing the risk of unpatched SMB vulnerabilities.

Zabbix is an enterprise IT network and application monitoring solution. In a routine review of its source code, we discovered a CSRF (cross-site request forgery) vulnerability in the authentication component of the Zabbix UI. Using this vulnerability, an unauthenticated attacker can take over the Zabbix administrator's account if the attacker can persuade the Zabbix administrator…

Write the file supplied in the --file argument to the location specified in the --path argument. The file will be written in the context of the vsphere-ui user. If the target is vulnerable, but the exploit fails, it is likely that the vsphere-ui user does not have permissions to write to the specified path.

LibreNMS is an open source solution for network monitoring based on PHP, MySQL and SNMP. While reviewing its source code, we discovered a second-order SQL injection vulnerability, CVE-2020-35700, in the Dashboard feature. This vulnerability is exploitable by any authenticated user inside LibreNMS. The vulnerability is fixed in LibreNMS 21.1.0.

Mautic is widely used open source software for marketing automation. While researching the application and its source code on Github, we discovered an attack chain whereby an unauthenticated attacker could gain remote code execution privileges on the server hosting Mautic by abusing a stored XSS vulnerability. The issues raised in this post, CVE-2020-35124 and CVE-2020-35125,…

OrangeHRM is software for Human Resource Management (HRM). In a routine audit of the open source version of OrangeHRM, we discovered a SQL injection vulnerability in the "Buzz" module, an integrated social media tool within the software. Authenticated low privilege users can use this vulnerability to disclose the full contents of the OrangeHRM database, including…