ICS Advisory (ICSA-21-287-02)

Uffizio GPS Tracker

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1. EXECUTIVE SUMMARY

  • CVSS v3 9.8
  • ATTENTION: Exploitable remotely/low attack complexity
  • Vendor: Uffizio
  • Equipment: GPS Tracker
  • Vulnerabilities: Improper Access Control, Unrestricted Upload of File with Dangerous Type, Open Redirect, Cross-site Scripting, Cross-site Request Forgery

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker with access to the host to view sensitive information, gain code execution, cause a redirection to an arbitrary external domain, and perform actions on behalf of an unsuspecting user.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

  • All versions of GPS Tracker software

3.2 VULNERABILITY OVERVIEW

3.2.1    IMPROPER ACCESS CONTROL CWE-284

Visiting through the browser or doing curl on the vulnerable host at Port 9000 responds with JSON body, revealing information about deployed GPS devices.

CVE-2020-17483 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

3.2.2    UNRESTRICTED UPLOAD OF FILE WITH DANGEROUS TYPE CWE-434

The web server can be compromised by uploading and executing a web/reverse shell. An attacker could then run commands, browse system files, and browse local resources.

CVE-2020-17485 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

3.2.3    URL REDIRECTION TO UNTRUSTED SITE ('OPEN REDIRECT') CWE-601

An attacker can construct a URL within the application that causes a redirection to an arbitrary external domain.

CVE-2020-17484 has been assigned to this vulnerability. A CVSS v3 base score of 4.7 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N).

3.2.4    IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE SCRIPTING') CWE-79

An attacker may be able to inject client-side JavaScript code on multiple instances within the application.

CVE-2021-32927 has been assigned to this vulnerability. A CVSS v3 base score of 7.1 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L).

3.2.5    CROSS-SITE REQUEST FORGERY CWE-352

This application-wide vulnerability may allow an attacker to perform unintended actions on behalf of a user.

CVE-2021-32929 has been assigned to this vulnerability. A CVSS v3 base score of 4.3 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Transportation Systems
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: India

3.4 RESEARCHER

Harshit Shukla reported these vulnerabilities to CISA.

4. MITIGATIONS

Uffizio is aware of these vulnerabilities and has not supplied any mitigations or workarounds. Contact Uffizio for more information.

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 VPN is only as secure as its 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.


Contact Information

For any questions related to this report, please contact the CISA at:

Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870

For industrial control systems cybersecurity information:  https://us-cert.cisa.gov/ics 
or incident reporting:  https://us-cert.cisa.gov/report

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