what you don't know can hurt you
Home Files News &[SERVICES_TAB]About Contact Add New

PRTG Command Injection

PRTG Command Injection
Posted Jun 27, 2018
Authored by Josh Berry

PRTG versions prior to 18.2.39 suffer from a command execution vulnerability.

tags | exploit
advisories | CVE-2018-9276
SHA-256 | be172df4e5e049f038651f97c69949e433053a898b84ab8c3c1091021c78c536

PRTG Command Injection

Change Mirror Download
Bugtraq,

I (Josh Berry) discovered an authenticated command injection vulnerability
in the Demo PowerShell notification script provided by versions of PRTG
Network Monitor prior to 18.2.39. The PowerShell notifications demo script
on versions of the application prior to 18.2.39 do not properly sanitize
input in the Parameter field. The web application provides a security
control around running executables/scripts as part of a notification, but
the demo PowerShell script contains a command injection vulnerability. As a
proof of concept, the following value can be passed in the Parameter
field, resulting in the creation of a test account named pentest:

Test.txt;net user pentest p3nT3st! /add

This bypasses the security control in place for the application. I notified
Paessler AG, the developer of the application, and they have since patched
the issue and assigned a CVE of CVE-2018-9276. Additional details are
provided below:

# Vulnerability Title: PRTG < 18.2.39 Command Injection Vulnerability
# Google Dork: N/A, but more details at:
https://www.codewatch.org/blog/?p=453
# Date: Initial report: 2/14/2018, disclosed on 6/25/2018
# Exploit Author: Josh Berry
# Vendor Homepage: https://www.paessler.com
# Software Link: https://www.paessler.com/download/prtg-download?download=1
# Vulnerable Version Tested: 18.1.37.12158
# Patched Version: 18.2.39
# Tested on: Windows 7 and Windows Server 2012 R2
# CVE : CVE-2018-9276

Outside of patching, a workaround would be to just remove the PowerShell
demo script from the notifications directory found in the documentation:
https://www.paessler.com/manuals/prtg/notifications_settings#program.

Note that exploiting this issue requires authenticated access. The tool
installs with the default credentials of prtgadmin / prtgadmin
(https://kb.paessler.com/en/topic/433-what-s-the-login-name-and-password-for
-the-prtg-web-interface-and-enterprise-console-how-to-change), and it is
common for organizations to leave defaults in place or take time in changing
them based on my penetration testing experience.

Thanks,

Josh Berry, OSCP & GCIA Gold
Project Lead - CodeWatch

Cell 469.831.8543 | josh.berry@codewatch.org | www.codewatch.org

Login or Register to add favorites

File Archive:

June 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Jun 1st
    0 Files
  • 2
    Jun 2nd
    0 Files
  • 3
    Jun 3rd
    18 Files
  • 4
    Jun 4th
    21 Files
  • 5
    Jun 5th
    0 Files
  • 6
    Jun 6th
    57 Files
  • 7
    Jun 7th
    6 Files
  • 8
    Jun 8th
    0 Files
  • 9
    Jun 9th
    0 Files
  • 10
    Jun 10th
    12 Files
  • 11
    Jun 11th
    27 Files
  • 12
    Jun 12th
    38 Files
  • 13
    Jun 13th
    16 Files
  • 14
    Jun 14th
    0 Files
  • 15
    Jun 15th
    0 Files
  • 16
    Jun 16th
    0 Files
  • 17
    Jun 17th
    0 Files
  • 18
    Jun 18th
    0 Files
  • 19
    Jun 19th
    0 Files
  • 20
    Jun 20th
    0 Files
  • 21
    Jun 21st
    0 Files
  • 22
    Jun 22nd
    0 Files
  • 23
    Jun 23rd
    0 Files
  • 24
    Jun 24th
    0 Files
  • 25
    Jun 25th
    0 Files
  • 26
    Jun 26th
    0 Files
  • 27
    Jun 27th
    0 Files
  • 28
    Jun 28th
    0 Files
  • 29
    Jun 29th
    0 Files
  • 30
    Jun 30th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close