All information products included in https://us-cert.cisa.gov/ics are provided "as is" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see https://us-cert.cisa.gov/tlp/.
1. EXECUTIVE SUMMARY
- CVSS v3 10.0
- ATTENTION: Exploitable remotely/low skill level to exploit
- Vendor: Advantech
- Equipment: Spectre RT Industrial Routers
- Vulnerabilities: Improper Neutralization of Input During Web Page Generation, Cleartext Transmission of Sensitive Information, Improper Restriction of Excessive Authentication Attempts, Use of a Broken or Risky Cryptographic Algorithm, Use of Platform-Dependent Third-party Components
2. RISK EVALUATION
Successful exploitation of these vulnerabilities may allow information disclosure, deletion of files, and remote code execution.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of Advantech Spectre RT Industrial Routers are affected:
- Spectre RT ERT351 firmware Versions 5.1.3 and prior
3.2 VULNERABILITY OVERVIEW
The affected product does not neutralize special characters in the error response, allowing attackers to use a reflected XSS attack.
Login and password are transmitted in clear text form, which may allow an attacker to intercept the request.
Insufficient login authentication parameters required for the web application may allow an attacker to gain full access using a brute-force password attack.
Outdated version of BusyBox password encryption is in use, which may allow an attacker to discover passwords.
CVE-2018-20679, CVE-2016-6301, CVE-2015-9261, and others have been assigned to this version of BusyBox. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Outdated version of OpenSSL is in use, which may allow an attacker to exploit known vulnerabilities in OpenSSL.
CVE-2016-2842, CVE-2016-0799, CVE-2016-6304 and others have been assigned to this version of OpenSSL. A CVSS v3 base score of 10.0 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).
- CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing, Energy, Water and Wastewater Systems
- COUNTRIES/AREAS DEPLOYED: East Asia, Europe, United States, South America, Middle East
- COMPANY HEADQUARTERS LOCATION: Taiwan
Ilya Karpov and Evgeniy Druzhinin of Rostelecom-Solar and Vlad Komarov of ScadaX reported these vulnerabilities to CISA.
For additional information, please see Advantech Security Advisory SA-2021-01-01
Advantech recommends users update to Version 6.2.7 or later.
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
- Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet.
- Locate control system networks and remote devices behind firewalls, and isolate them from the business network.
- When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize a VPN is only as secure as the connected devices.
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on us-cert.cisa.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.cisa.gov in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.
No known public exploits specifically target these vulnerabilities.
For any questions related to this report, please contact the CISA at:
Toll Free: 1-888-282-0870
CISA continuously strives to improve its products and services. You can help by choosing one of the links below to provide feedback about this product.
Please share your thoughts.
We recently updated our anonymous product survey; we'd welcome your feedback.