CVE-2018-12608 : Security Advisory and Response
Discover the security vulnerability in Docker Moby prior to 17.06.0 allowing improper client authentication with domain-validated certificates signed by system-trusted root CAs. Learn how to mitigate and prevent unauthorized access.
A vulnerability was found in Docker Moby prior to version 17.06.0 that allowed clients with domain-validated certificates signed by system-trusted root CAs to authenticate improperly.
Understanding CVE-2018-12608
This CVE relates to a security issue in Docker Moby that affected the TLS certificate validation process.
What is CVE-2018-12608?
In Docker Moby versions before 17.06.0, the Docker engine incorrectly validated client TLS certificates, allowing clients with domain-validated certificates signed by system-trusted root CAs to authenticate erroneously.
The Impact of CVE-2018-12608
This vulnerability could potentially lead to unauthorized access by clients with certificates signed by system-trusted root CAs, bypassing the intended authentication mechanisms.
Technical Details of CVE-2018-12608
This section provides more in-depth technical insights into the vulnerability.
Vulnerability Description
The Docker engine in versions prior to 17.06.0 incorrectly validated client TLS certificates, leading to improper authentication of clients with domain-validated certificates signed by system-trusted root CAs.
Affected Systems and Versions
- Affected Product: Docker Moby
- Affected Versions: Prior to 17.06.0
Exploitation Mechanism
Clients possessing domain-validated certificates signed by system-trusted root CAs could exploit this vulnerability to authenticate improperly.
Mitigation and Prevention
To address and prevent the exploitation of CVE-2018-12608, follow these mitigation strategies:
Immediate Steps to Take
- Upgrade Docker Moby to version 17.06.0 or newer to mitigate the vulnerability.
- Review and update TLS certificate validation processes to ensure proper authentication.
Long-Term Security Practices
- Regularly monitor and update TLS certificate validation mechanisms.
- Implement strict certificate signing policies to prevent unauthorized access.
Patching and Updates
- Apply patches and updates provided by Docker to fix the vulnerability and enhance security measures.