CVE-2024-46981
CVE-2024-46981 is a critical vulnerability in Redis that allows for potential remote code execution. This flaw exists because an authenticated user can craft a malicious Lua script to manipulate the garbage collector. With an SVRS score of 46, while not immediately critical, this vulnerability should still be addressed promptly, especially in environments where users have the ability to execute Lua scripts. The vulnerability is resolved in Redis versions 7.4.2, 7.2.7, and 6.2.17. To mitigate this security risk without patching, restrict user access to EVAL and EVALSHA commands using ACL. Failing to address CVE-2024-46981 could lead to unauthorized code execution, compromising the integrity and availability of your Redis database. This vulnerability is significant because it highlights the risks associated with allowing users to execute arbitrary code within a database environment.
Description
CVE-2024-46981 is a vulnerability in Redis, an open-source, in-memory database. This vulnerability allows an authenticated user to execute arbitrary code on the server by manipulating the garbage collector using a specially crafted Lua script. This vulnerability is considered high severity due to the possibility of remote code execution.
SVRS: 46 indicates the vulnerability is significant but not immediately critical. While it doesn't reach the critical threshold of 80, it still demands attention and proactive action to mitigate the risks.
Key Insights
- Authenticated Exploitation: This vulnerability can be exploited by authenticated users, meaning an attacker needs to have valid credentials to access the Redis server.
- Lua Script Manipulation: The vulnerability relies on the ability of an attacker to manipulate Lua scripts within the Redis environment. This highlights the importance of secure Lua scripting practices and careful validation of any scripts executed within Redis.
- Potential for Remote Code Execution: The most severe consequence of this vulnerability is the possibility of remote code execution. This means an attacker could gain control of the compromised server and potentially access sensitive data or launch further attacks.
- Workaround Available: While patching is the ideal solution, the provided workaround of disabling Lua script execution through ACLs can serve as an immediate mitigation step to reduce the risk.
Mitigation Strategies
- Patching: Upgrade Redis to version 7.4.2, 7.2.7, or 6.2.17 to implement the official fix for this vulnerability.
- ACLs: Restrict the use of the
EVALandEVALSHAcommands through Access Control Lists (ACLs) to prevent users from executing Lua scripts unless absolutely necessary. - Input Validation: Carefully validate and sanitize any input received from users, especially if those inputs are used in Lua scripts.
- Network Segmentation: Isolate Redis servers from other critical systems to minimize the potential damage if a server is compromised.
Additional Information
If users have additional queries regarding this incident, they can use the 'Ask to Analyst' feature, contact SOCRadar directly, or open a support ticket for more information if necessary.
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CWE Details
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