CVE-2018-11218 : Security Advisory and Response

A stack-based buffer overflow vulnerability in the cmsgpack library within the Redis Lua subsystem has been identified, leading to memory corruption in certain Redis versions.

Understanding CVE-2018-11218

This CVE involves a memory corruption issue due to stack-based buffer overflows in Redis versions prior to 3.2.12, 4.x before 4.0.10, and 5.x before 5.0 RC2.

What is CVE-2018-11218?

The vulnerability arises from stack-based buffer overflows in the cmsgpack library within the Redis Lua subsystem, potentially allowing attackers to corrupt memory.

The Impact of CVE-2018-11218

The vulnerability could be exploited by malicious actors to trigger memory corruption, leading to potential system crashes, unauthorized access, or arbitrary code execution.

Technical Details of CVE-2018-11218

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The vulnerability stems from stack-based buffer overflows in the cmsgpack library within the Redis Lua subsystem, resulting in memory corruption.

Affected Systems and Versions

Redis versions prior to 3.2.12
Redis 4.x before 4.0.10
Redis 5.x before 5.0 RC2

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious inputs to trigger the buffer overflows, potentially leading to memory corruption.

Mitigation and Prevention

Protecting systems from CVE-2018-11218 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Redis to versions 3.2.12, 4.0.10, or 5.0 RC2 to mitigate the vulnerability.
Monitor network traffic for any suspicious activities that could indicate exploitation.

Long-Term Security Practices

Implement secure coding practices to prevent buffer overflows and memory corruption vulnerabilities.
Regularly update and patch software to address known security issues.

Patching and Updates

Apply the latest patches and updates provided by Redis to fix the vulnerability and enhance system security.