SB2018092404 - Multiple vulnerabilities in PRTG Network Monitor

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Improper input validation (CVE-ID: CVE-2018-19203)

The vulnerability allows a remote attacker to cause DoS condition.

The vulnerability exists due to an error when processing malicious input. A remote attacker can send a specially crafted HTTP request and terminate the PRTG Core Server Service resulting in denial of service.

2) OS command injection (CVE-ID: CVE-2018-19204)

The vulnerability allows a remote high-privileged attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to the user's input in the POST parameter 'proxyport_' is mishandled when creating an HTTP Advanced Sensor. A remote attacker can craft an HTTP request and override the 'writeresult' command-line parameter for HttpAdvancedSensor.exe and store arbitrary data in an arbitrary place on the file system to create an executable file in the Custom SensorsEXE directory and execute it by creating EXE/Script Sensor.

Remediation

Install update from vendor's website.

References

• https://www.ptsecurity.com/ww-en/analytics/threatscape/pt-2018-22/
• https://www.ptsecurity.com/ww-en/analytics/threatscape/pt-2018-23/