CVE-2017-8033 : Security Advisory and Response

A vulnerability in the Cloud Controller API of Cloud Foundry Foundation CAPI-release versions before v1.35.0 and cf-release versions before v268 allows privilege escalation by deploying a specially crafted application.

Understanding CVE-2017-8033

This CVE involves a filesystem traversal vulnerability in the Cloud Controller API, enabling a space developer to elevate their privileges.

What is CVE-2017-8033?

This vulnerability in Cloud Foundry Foundation CAPI-release and cf-release versions allows a space developer to escalate privileges by deploying a specific application that can write arbitrary files to the Cloud Controller's virtual machine.

The Impact of CVE-2017-8033

Attackers can exploit this vulnerability to gain unauthorized access and potentially compromise the Cloud Controller API.
Privilege escalation can lead to unauthorized control over the Cloud Controller's virtual machine.

Technical Details of CVE-2017-8033

This section provides detailed technical information about the CVE.

Vulnerability Description

An issue was discovered in the Cloud Controller API of Cloud Foundry Foundation CAPI-release versions before v1.35.0 and cf-release versions before v268. A filesystem traversal vulnerability exists, allowing a space developer to escalate privileges by deploying a specially crafted application.

Affected Systems and Versions

Cloud Controller API CAPI-release versions prior to v1.35.0
cf-release versions prior to v268

Exploitation Mechanism

The vulnerability can be exploited by deploying a specifically designed application that has the capability to write arbitrary files to the Cloud Controller's virtual machine.

Mitigation and Prevention

Protecting systems from CVE-2017-8033 is crucial to maintaining security.

Immediate Steps to Take

Update Cloud Controller API to version v1.35.0 or higher.
Update cf-release to version v268 or above.
Monitor and restrict space developers' privileges.

Long-Term Security Practices

Regularly review and update access controls within the Cloud Controller API.
Conduct security training for developers to raise awareness of privilege escalation risks.

Patching and Updates

Apply security patches promptly to address known vulnerabilities.