CVE-2019-11279 : Exploit Details and Defense Strategies

CF UAA versions prior to 74.1.0 have a vulnerability that allows a client to request unauthorized scopes, potentially leading to privilege escalation and unauthorized control over the UAA system and its resources.

Understanding CVE-2019-11279

This CVE involves a security issue in Cloud Foundry's UAA Release (OSS) where a client can manipulate scopes to gain unauthorized privileges.

What is CVE-2019-11279?

Versions of CF UAA prior to 74.1.0 allow clients to request scopes they should not have, enabling a malicious user to escalate their privileges remotely.

The Impact of CVE-2019-11279

The vulnerability poses a high severity risk, with a CVSS base score of 8.7, potentially leading to unauthorized control over the UAA system and its managed resources.

Technical Details of CVE-2019-11279

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

CF UAA versions earlier than 74.1.0 allow clients to request scopes they are not supposed to have, enabling a malicious user to escalate their privileges to any scope.

Affected Systems and Versions

Product: UAA Release (OSS)
Vendor: Cloud Foundry
Versions Affected: Prior to 74.1.0

Exploitation Mechanism

Attack Vector: Network
Attack Complexity: Low
Privileges Required: High
Scope: Changed

Mitigation and Prevention

To address CVE-2019-11279, follow these mitigation strategies.

Immediate Steps to Take

Upgrade CF UAA to version 74.1.0 or later.
Monitor and restrict scope requests from clients.

Long-Term Security Practices

Regularly review and update access control policies.
Conduct security training to raise awareness of privilege escalation risks.

Patching and Updates

Apply security patches promptly.