CVE-2017-11468 : Security Advisory and Response

Docker Registry in Docker Distribution versions prior to 2.6.2 is vulnerable to a denial of service attack due to inadequate content restriction, allowing remote attackers to consume excessive memory through the manifest endpoint.

Understanding CVE-2017-11468

What is CVE-2017-11468?

This CVE refers to a vulnerability in Docker Registry that enables remote attackers to trigger a denial of service attack by overloading the system's memory.

The Impact of CVE-2017-11468

The vulnerability can be exploited by malicious actors to exhaust system memory, leading to a denial of service condition and potential service disruption.

Technical Details of CVE-2017-11468

Vulnerability Description

The Docker Distribution in Docker Registry versions prior to 2.6.2 does not effectively limit the volume of content accepted from a user, allowing attackers to consume excessive memory through the manifest endpoint.

Affected Systems and Versions

Product: Docker Distribution
Vendor: Docker
Versions Affected: All versions prior to 2.6.2

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a large volume of content through the manifest endpoint, causing the system to consume excessive memory and resulting in a denial of service.

Mitigation and Prevention

Immediate Steps to Take

Upgrade Docker Registry to version 2.6.2 or later to mitigate the vulnerability.
Monitor system resources for unusual memory consumption that could indicate a potential attack.

Long-Term Security Practices

Regularly update Docker Registry and other software components to patch known vulnerabilities.
Implement network security measures to detect and block malicious traffic targeting the manifest endpoint.

Patching and Updates

Apply patches and updates provided by Docker to address the vulnerability and enhance system security.