CVE-2021-27715:Authentication Bypass in MoFi Network MOFI4500-4GXeLTE-V2 Router

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A critical authentication bypass vulnerability exists in MoFi Network MOFI4500-4GXeLTE-V2 router running firmware version 3.5.6-xnet-5052. This vulnerability allows remote attackers to bypass authentication mechanisms and execute arbitrary code on the affected device through specially crafted HTTP requests. The issue is classified as CWE-287 (Improper Authentication) and could lead to complete compromise of the router.

Overview

The MoFi Network MOFI4500-4GXeLTE-V2 router contains an authentication bypass vulnerability that affects firmware version 3.5.6-xnet-5052. When exploited, this vulnerability allows attackers to send specially crafted HTTP requests that circumvent the router's authentication mechanisms. Once authentication is bypassed, an attacker can execute arbitrary code on the device, potentially leading to full control of the router. This could allow attackers to modify network configurations, intercept network traffic, use the router as a pivot point for further attacks, or compromise connected devices. This vulnerability is particularly severe as it requires no user interaction and could be exploited remotely.

Remediation

To mitigate this vulnerability, users should:

  1. Update the router firmware to the latest version as provided by MoFi Network if a patch is available.
  2. If no patch is available, consider implementing network-level protections:
    • Place the router behind another firewall if possible
    • Restrict remote access to the router's management interface
    • Configure access control lists to limit which IP addresses can access the router
    • Monitor for suspicious access attempts to the router
  3. Change default credentials on all network devices
  4. Regularly check the MoFi Network website for security updates and patches
  5. Consider network segmentation to limit potential damage if the router is compromised

References

  1. MoFi Network website: http://mofi.com
  2. Nagarro Security Advisory: https://www.nagarro.com/services/security/mofi-cve-security-advisory
  3. Common Weakness Enumeration: CWE-287 (Improper Authentication)
  4. MITRE CVE Entry: CVE-2021-27715

Industry ExposureMost to least
This section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.

  1. Accommodation & Food Services
    Accommodation & Food Services
  2. Administrative, Support, Waste Management & Remediation Services
    Administrative, Support, Waste Management & Remediation Services
  3. Agriculture, Forestry Fishing & Hunting
    Agriculture, Forestry Fishing & Hunting
  4. Arts, Entertainment & Recreation
    Arts, Entertainment & Recreation
  5. Construction
    Construction
  6. Educational Services
    Educational Services
  7. Finance and Insurance
    Finance and Insurance
  8. Health Care & Social Assistance
    Health Care & Social Assistance
  9. Information
    Information
  10. Management of Companies & Enterprises
    Management of Companies & Enterprises
  11. Manufacturing
    Manufacturing
  12. Mining
    Mining
  13. Other Services (except Public Administration)
    Other Services (except Public Administration)
  14. Professional, Scientific, & Technical Services
    Professional, Scientific, & Technical Services
  15. Public Administration
    Public Administration
  16. Real Estate Rental & Leasing
    Real Estate Rental & Leasing
  17. Retail Trade
    Retail Trade
  18. Transportation & Warehousing
    Transportation & Warehousing
  19. Utilities
    Utilities
  20. Wholesale Trade
    Wholesale Trade

Focus on What Matters

  1. See Everything.
  2. Identify True Risk.
  3. Proactively Mitigate Threats.

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