CVE-2019-17134 : Exploit Details and Defense Strategies

OpenStack Octavia versions >=0.10.0 <2.1.2, >=3.0.0 <3.2.0, and >=4.0.0 <4.1.0 are vulnerable to a security flaw in Amphora Images, allowing unauthorized access to the management network.

Understanding CVE-2019-17134

This CVE identifies a vulnerability in OpenStack Octavia that could be exploited to bypass client-certificate based authentication.

What is CVE-2019-17134?

The vulnerability in Amphora Images of OpenStack Octavia allows individuals with access to the management network to bypass authentication and retrieve sensitive information or issue configuration commands through simple HTTP requests to the Agent on port https/9443.

The Impact of CVE-2019-17134

The security issue arises from the misconfiguration of the cmd/agent.py gunicorn cert_reqs option, which should be set as ssl.CERT_REQUIRED but is incorrectly set as True.

Technical Details of CVE-2019-17134

OpenStack Octavia vulnerability details.

Vulnerability Description

The vulnerability enables unauthorized users to bypass client-certificate based authentication, potentially leading to unauthorized access and data leakage.

Affected Systems and Versions

OpenStack Octavia versions >=0.10.0 <2.1.2
OpenStack Octavia versions >=3.0.0 <3.2.0
OpenStack Octavia versions >=4.0.0 <4.1.0

Exploitation Mechanism

Unauthorized individuals can exploit the misconfiguration of the cmd/agent.py gunicorn cert_reqs option to bypass authentication and access sensitive information.

Mitigation and Prevention

Steps to address and prevent the CVE-2019-17134 vulnerability.

Immediate Steps to Take

Apply patches provided by the vendor promptly.
Restrict network access to critical systems.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update and patch all software components.
Implement strong authentication mechanisms.
Conduct security audits and assessments periodically.

Patching and Updates

Refer to vendor advisories for specific patching instructions.