Redis In-Memory Database Vulnerable to Heap Overflow and Remote Code Execution

CVE-2023-41056

What is CVE-2023-41056?

CVE-2023-41056 is a critical vulnerability identified in Redis, an open-source in-memory database designed for high-performance data storage and retrieval. It allows for persistent storage of data on disk and is widely used for caching, message brokering, and real-time analytics. This vulnerability arises from improper handling of memory buffer resizing, which can lead to a heap overflow. If exploited, the vulnerability could enable attackers to execute arbitrary code remotely, posing severe risks to organizations that rely on Redis for their applications and data management.

Technical Details

The flaw in CVE-2023-41056 is rooted in Redis's mishandling of certain memory buffer operations. Specifically, an integer overflow occurs during the resizing of these buffers, leading to a heap overflow condition. This programming error can be exploited by attackers to manipulate system memory, potentially allowing them to execute arbitrary code. The vulnerability has been documented, and affected versions of Redis include those prior to the patches released in versions 7.0.15 and 7.2.4.

Impact of the Vulnerability

1. Remote Code Execution: The most significant risk associated with CVE-2023-41056 is the potential for remote code execution. Attackers can exploit this vulnerability to run arbitrary code on the affected system, undermining its integrity and confidentiality.

2. Data Compromise: With access granted via code execution, attackers could manipulate or extract sensitive data stored in the Redis database, leading to data breaches and the loss of critical information.

3. Service Disruption: By executing unauthorized code, attackers may disrupt Redis services, resulting in application downtime, degraded performance, and potential fallout for the operations depending on the database's reliability.

References