PT-2018-23: Remote Code Execution in PRTG Network Monitor Vulnerable software PRTG Network Monitor Version: 18.3.43.2323 and earlier Link: https://www.paessler.com/prtg Severity level Severity level: High Impact: Remote Code Execution Access Vector: Remote CVSS v3: Base Score: 9.1 Vector: (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H) CVE: CVE-2018-19204 Vulnerability description The specialists of the Positive Research center have detected a Remote Code Execution vulnerability in PRTG Network Monitor. Vulnerability due to improper handling of user input in the POST parameter 'proxyport_' allows remote authenticated attackers with read-write privileges to execute an arbitrary code and OS commands with system privileges. Using a specially crafted HTTP request an attacker can override the 'writeresult' command-line parameter for the HttpAdvancedSensor.exe executable file and write arbitrary data to an arbitrary file-system location, as demonstrated by creating an executable file in the \Custom Sensors\EXE directory and executing it through creation of EXE/Script Sensor. How to fix Update your software up to the latest version Advisory status 25.05.2018 - Vendor gets vulnerability details 24.09.2018 - Vendor releases fixed version and details 25.10.2018 - Public disclosure Credits The vulnerability was detected by Anton Vaychikauskas, Dmitry Galecha, Positive Research Center (Positive Technologies Company) References http://en.securitylab.ru/lab/PT-2018-23 https://www.paessler.com/prtg/history/stable#18.3.44.2054 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.
