CVE-2024-31449:Redis Lua scripting vulnerability: An authenticated user can craft Lua scripts to trigger a stack buffer overflow in the bit library, potentially enabling remote code execution. Affects multiple Redis versions; fixed in 6.2.16, 7.2.6, and 7.4.1.

splash
Back

Description Preview

CVE-2024-31449 describes a vulnerability in Redis where Lua library commands may allow an authenticated user to trigger a stack-based buffer overflow via a specially crafted Lua script, potentially leading to remote code execution on the Redis server. The root cause is improper input validation within Lua scripting functionality, specifically impacting the bit library operations. The issue is available in all Redis versions that include Lua scripting prior to the patched releases. Affected versions include 2.6.x up to before 6.2.16, 7.0.x up to before 7.2.6, and 7.3.x up to before 7.4.1. The problem has been fixed in Redis releases 6.2.16, 7.2.6, and 7.4.1. There are no known workarounds for this vulnerability, so upgrading to a patched version is strongly recommended.

Overview

This vulnerability stems from improper input validation in Redis’s Lua scripting capabilities, which can be exploited by an authenticated user through a specially crafted Lua script to trigger a stack-based buffer overflow in the bit library. The resulting overflow can potentially allow remote code execution on the Redis server, making this a high-severity, local-attack vector issue with drastic implications for confidentiality, integrity, and availability. The flaw affects multiple Redis version families prior to the patched releases and is mitigated by upgrading to the fixed versions (6.2.16, 7.2.6, or 7.4.1).

Remediation

  1. Upgrade Redis to a fixed version: move to one of the patched releases, specifically 6.2.16, 7.2.6, or 7.4.1 or newer. Use your platform’s package manager or compile from source as appropriate for your deployment.
  2. Apply vendor advisories: review and follow guidance in the referenced security advisory and patches from Redis (and the linked GHSA advisory) to ensure all relevant components are updated.
  3. Strengthen access controls (temporary risk reduction): ensure Redis instances require strong authentication and are network-isolated to trusted clients. If possible, enforce TLS in transit and restrict network exposure to minimize the window for exploitation until an upgrade can be performed.
  4. Validate after patch: run regression and security tests in a staging environment to confirm the Lua scripting feature behaves as expected and that the patched version is active in production.
  5. Monitor and document: subscribe to Redis security advisories and CVE notifications for any follow-up guidance, and audit systems to verify patched versions are running.

References

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

Focus on What Matters

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

Let's talk!

background