CVE-2017-1000248: Unsafe Object Loading in redis-store

The core of this vulnerability lies in the redis-store gem's handling of data retrieved from Redis. Prior to version 1.4.0, the gem does not adequately sanitize or validate objects deserialized from Redis. An attacker who can inject malicious data into Redis—for example, by exploiting another vulnerability in the Redis server itself or through a compromised application—can then trigger the redis-store gem to load and execute this malicious data. This could lead to complete compromise of the Ruby application, including data theft, modification, and remote code execution. The blast radius extends to any sensitive data stored or processed by the application, and potentially to other systems accessible from the compromised application server.

1. Published2017-12-06
2. Modified2024-02-16
3. EPSS updated2026-04-02

The primary mitigation for CVE-2017-1000248 is to upgrade the redis-store gem to version 1.4.0 or later. If upgrading is not immediately feasible due to compatibility issues or breaking changes, consider implementing stricter input validation and sanitization on any data stored in Redis. Additionally, review and harden the Redis server itself to prevent unauthorized data injection. While a WAF cannot directly address this vulnerability, it can help mitigate the impact of potential exploits by filtering malicious payloads. Implement robust access controls and authentication mechanisms for the Redis server to limit potential attack vectors.