CVE-2018-1000538 : Security Advisory and Response

Minio Inc. Minio S3 server prior to RELEASE.2018-05-16T23-35-33Z had a vulnerability related to memory allocation without limits, potentially leading to denial of service.

Understanding CVE-2018-1000538

This CVE involves a vulnerability in the Minio S3 server that could be exploited to cause a denial of service attack.

What is CVE-2018-1000538?

The vulnerability in the Minio S3 server allowed attackers to exploit the write-to-RAM functionality by sending large V4-(pre)signed requests, potentially resulting in a denial of service.

The Impact of CVE-2018-1000538

The vulnerability could lead to a denial of service if exploited, affecting the availability of the Minio S3 server.

Technical Details of CVE-2018-1000538

This section provides technical details about the vulnerability.

Vulnerability Description

The vulnerability in the Minio S3 server involved memory allocation without limits, making it susceptible to denial of service attacks.

Affected Systems and Versions

Product: Minio Inc. Minio S3 server
Versions affected: Prior to RELEASE.2018-05-16T23-35-33Z

Exploitation Mechanism

Attackers could exploit the vulnerability by sending V4-(pre)signed requests with large bodies.

Mitigation and Prevention

Protect your systems from CVE-2018-1000538 with these steps:

Immediate Steps to Take

Update to the version that comes after commit 9c8b7306f55f2c8c0a5c7cea9a8db9d34be8faa7.

Long-Term Security Practices

Regularly monitor and update your Minio S3 server to ensure all security patches are applied.
Implement network security measures to detect and prevent denial of service attacks.

Patching and Updates

Stay informed about security updates and patches released by Minio Inc. to address vulnerabilities like CVE-2018-1000538.