S4E

Redis Require Authentication Detection Scanner

This scanner detects the use of Redis Require Authentication in digital assets. It helps identify whether the Redis server requires authentication, ensuring security management in deployments. Detecting this aspect is crucial to prevent unauthorized access to Redis instances.

Short Info


Level

Informational

Single Scan

Single Scan

Can be used by

Asset Owner

Estimated Time

10 seconds

Time Interval

17 days 10 hours

Scan only one

Domain, IPv4

Toolbox

-

Redis is a widely-used, open-source, in-memory data structure store, which is often utilized as a cache, message broker, and database. It is employed by developers to provide high-speed transaction capabilities in web applications and other software that require real-time data processing. Many tech companies and enterprises integrate Redis into their technology stack due to its efficiency and scalability. Redis is utilized by data engineers and developers working on platforms that need rapid data retrieval and storage solutions. The software is typically deployed on cloud servers or on-premise systems to allow for low latency applications. Its architecture supports multiple data types such as strings, hashes, lists, sets, and more, making it versatile for various use cases.

The enumeration vulnerability in Redis involves checking whether the Redis server requires authentication. This vulnerability can lead to unauthorized access to the database if proper authentication is not configured. Attackers may probe Redis servers to discern these security configurations, potentially exploiting weak or default access parameters. It’s significant because Redis does not enable authentication by default, increasing exposure risk to external threats. The vulnerability generally tests the server's response to authentication demands through probing processes. Detecting this can help system administrators to update settings ensuring Redis servers require authenticated access.

On a technical level, the vulnerability check involves sending commands to the Redis server to determine if authentication is required. The scanner executes a preliminary check to see if the necessary ports are open and then utilizes specialized redis commands for validation. Through this script-driven process, verification is made on whether the Redis instance enforces the password authentication mechanism. The detection process employs both default port scanning and communication protocol scripting to ascertain the authentication requirement. Errors or status messages in response to the authentication probe can indicate a misconfigured or exposed Redis instance. The vulnerability check uses a matchers DSL to evaluate server authentication success status.

If an attacker discovers that a Redis server doesn't require authentication, they can exploit this to gain unauthorized access to stored data and potentially manipulate database content. This exposure could lead to data breaches, operational disruptions, or even corruption of stored information. Malicious users may exploit this vector to inject or alter data, crucially affecting application integrity and confidentiality. Unauthorized access via this vector exposes all data in the Redis instance, risking intellectual property or personally identifiable information. Without authentication measures, attackers can also leverage the instance for further network intrusion activities. Furthermore, the absence of authentication could allow an attacker to perform Denial of Service attacks by overloading the server operations.

REFERENCES

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