CVE-2019-11289 : Exploit Details and Defense Strategies

Cloud Foundry Routing prior to version 0.193.0 is vulnerable to a nonce input validation issue that could allow unauthorized remote users to manipulate HTTP route service requests, potentially causing the Gorouter component to crash.

Understanding CVE-2019-11289

Versions of Cloud Foundry Routing prior to 0.193.0 have a vulnerability in nonce input validation, enabling unauthorized remote users to manipulate HTTP route service requests.

What is CVE-2019-11289?

This CVE refers to a security flaw in Cloud Foundry Routing that allows unauthorized users to disrupt the system by exploiting a nonce input validation vulnerability.

The Impact of CVE-2019-11289

The vulnerability poses a high availability impact, with a CVSS base score of 8.6, indicating a severe threat to the affected systems.

Technical Details of CVE-2019-11289

Cloud Foundry Routing vulnerability details and impact.

Vulnerability Description

Cloud Foundry Routing versions before 0.193.0 lack proper validation of nonce input, enabling remote unauthorized users to crash the Gorouter component.

Affected Systems and Versions

Product: Routing
Vendor: Cloud Foundry
Versions Affected: All versions before 0.193.0

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Availability Impact: High
Scope: Changed
Privileges Required: None

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2019-11289.

Immediate Steps to Take

Update Cloud Foundry Routing to version 0.193.0 or later to patch the vulnerability.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update and patch all software components to prevent security vulnerabilities.
Implement network security measures to detect and block unauthorized access attempts.

Patching and Updates

Apply security patches and updates provided by Cloud Foundry promptly to address known vulnerabilities.