CVE-2019-11278 : Security Advisory and Response

CVE-2019-11278, published on September 10, 2019, addresses a vulnerability in Cloud Foundry UAA versions prior to 74.1.0 that allows unauthorized users to escalate privileges and gain control over UAA scopes.

Understanding CVE-2019-11278

What is CVE-2019-11278?

CVE-2019-11278 is a security vulnerability in Cloud Foundry UAA that enables unauthorized remote users to exploit a blind SCIM injection, leading to information disclosure and privilege escalation.

The Impact of CVE-2019-11278

The vulnerability has a CVSS base score of 8.7, indicating a high severity level. It allows malicious users with specific access rights to gain unauthorized control over UAA scopes, compromising confidentiality and integrity.

Technical Details of CVE-2019-11278

Vulnerability Description

Cloud Foundry UAA versions prior to 74.1.0 are susceptible to external input queries, enabling a remote user with 'client.write' and 'groups.update' access to craft a SCIM query, resulting in information disclosure and privilege escalation.

Affected Systems and Versions

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

Exploitation Mechanism

The vulnerability allows unauthorized users to create a SCIM query, leading to the disclosure of sensitive information and subsequent unauthorized control over UAA scopes.

Mitigation and Prevention

Immediate Steps to Take

Upgrade Cloud Foundry UAA to version 74.1.0 or later to mitigate the vulnerability.
Monitor and restrict user access rights to prevent unauthorized privilege escalation.

Long-Term Security Practices

Regularly review and update access control policies to limit the impact of potential vulnerabilities.
Conduct security training for users to raise awareness of social engineering tactics and phishing attempts.

Patching and Updates

Stay informed about security updates and patches released by Cloud Foundry to address known vulnerabilities and enhance system security.