PT-2018-24: Authentication Bypass, Improper Authorization and Local File Inclusion in PRTG Network Monitor Vulnerable software PRTG Network Monitor Version: 18.2.39.1661 and earlier Link: https://www.paessler.com/prtg Severity level Severity level: High Impact: Authentication Bypass, Improper Authorization, Local File Inclusion Access Vector: Remote CVSS v3: Base Score: 9.8 Vector: (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) CVE: CVE-2018-19410 Vulnerability description The specialists of the Positive Research center have detected an Authentication Bypass, Improper Authorization and Local File Inclusion in PRTG Network Monitor. Vulnerability allows remote unauthenticated attackers to create users with read-write privileges including administrators by overriding attributes of the 'include' directive in /public/login.htm and including and executing a "/api/addusers" file. How to fix Update your software up to the latest version Advisory status 25.05.2018 - Vendor gets vulnerability details 07.05.2018 - Vendor releases fixed version and details 26.10.2018 - Public disclosure Credits The vulnerability was detected by Dmitry Galecha, Positive Research Center (Positive Technologies Company) References http://en.securitylab.ru/lab/PT-2018-24 https://www.paessler.com/prtg/history/stable#18.2.40.1683 Reports on the vulnerabilities previously discovered by Positive Research: https://www.ptsecurity.com/ https://en.securitylab.ru/lab/ About Positive Technologies Positive Technologies is a leading digital security firm with over 15 years of experience in 360° protection of critical IT systems against the most advanced cyberthreats. State-of-the-art solutions are developed at the company's research center—one of the largest in Europe. Positive Technologies experts have helped to identify and fix over 250 zero-day vulnerabilities in products from Cisco, Google, Honeywell, Huawei, Microsoft, Oracle, SAP, Schneider Electric, Siemens, and others, earning a reputation for world-class expertise in protection of devices and infrastructures at all scales from ATMs to nuclear power stations. Findings by Positive Technologies researchers are used for updating the MaxPatrol knowledge base and for development of security solutions including PT Application Firewall, PT Application Inspector, MaxPatrol. These products allow securing web applications, evaluating network protection, blocking attacks in real time, ensuring compliance with industry and national standards, and training security specialists. Positive Technologies is the organizer of the annual Positive Hack Days international forum and security competition.