CVE-2018-12453 : Security Advisory and Response

Redis before version 5.0 is vulnerable to a type confusion flaw in the xgroupCommand function, allowing remote attackers to launch denial-of-service attacks. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2018-12453

What is CVE-2018-12453?

CVE-2018-12453 is a type confusion vulnerability in Redis versions prior to 5.0. It specifically affects the xgroupCommand function in t_stream.c within redis-server.

The Impact of CVE-2018-12453

The vulnerability enables remote attackers to execute denial-of-service attacks by exploiting an XGROUP command with a key that is not a stream.

Technical Details of CVE-2018-12453

Vulnerability Description

The xgroupCommand function in t_stream.c in Redis before version 5.0 allows remote attackers to cause denial-of-service by using an XGROUP command with a non-stream key.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: Not applicable

Exploitation Mechanism

The vulnerability can be exploited remotely by sending a crafted XGROUP command with an incorrect key that is not a stream.

Mitigation and Prevention

Immediate Steps to Take

Update Redis to version 5.0 or later to mitigate the vulnerability.
Monitor security advisories for any patches or updates related to CVE-2018-12453.

Long-Term Security Practices

Regularly update and patch all software to prevent known vulnerabilities.
Implement network security measures to restrict access to critical systems.

Patching and Updates

Ensure that Redis is regularly updated to the latest version to address security issues like CVE-2018-12453.