CVE-2019-11268 : Security Advisory and Response

Cloud Foundry UAA version prior to 73.3.0 has a vulnerability that allows an authenticated malicious user to escalate their privileges and access private information across identity zones.

Understanding CVE-2019-11268

This CVE involves a flaw in the escaping mechanism of Cloud Foundry UAA endpoints, enabling unauthorized access to sensitive data.

What is CVE-2019-11268?

The vulnerability in Cloud Foundry UAA prior to version 73.3.0 allows a malicious user with basic read privileges in one identity zone to extend their access to other zones, compromising user, client, and group data.

The Impact of CVE-2019-11268

CVSS Base Score: 6.5 (Medium Severity)
Confidentiality Impact: High
Attack Vector: Network
Privileges Required: Low
An attacker can exploit this flaw to gain unauthorized access to private information in multiple identity zones.

Technical Details of CVE-2019-11268

The technical aspects of the vulnerability in Cloud Foundry UAA version prior to 73.3.0.

Vulnerability Description

The flaw in the escaping mechanism of UAA endpoints allows an authenticated user to elevate their privileges and access private data in various identity zones.

Affected Systems and Versions

Affected Product: UAA Release (OSS)
Vendor: Cloud Foundry
Vulnerable Versions: Prior to v73.3.0

Exploitation Mechanism

An authenticated malicious user with basic read privileges in one identity zone can exploit the vulnerability to gain unauthorized access to private information in other identity zones.

Mitigation and Prevention

Steps to mitigate and prevent the exploitation of CVE-2019-11268.

Immediate Steps to Take

Update Cloud Foundry UAA to version 73.3.0 or later to patch the vulnerability.
Monitor and restrict user privileges to minimize the risk of unauthorized access.

Long-Term Security Practices

Regularly review and update access control policies to prevent privilege escalation.
Conduct security training for users to raise awareness of potential vulnerabilities.

Patching and Updates

Apply security patches and updates promptly to ensure the system is protected against known vulnerabilities.