CVE-2019-3788 : Security Advisory and Response
Learn about CVE-2019-3788, a high-severity vulnerability in Cloud Foundry UAA Release versions prior to 71.0. Understand the impact, affected systems, exploitation mechanism, and mitigation steps.
Before version 71.0, it was possible to configure an insecure redirect URI for clients in Cloud Foundry UAA Release. An issue arises when a UAA client is configured with a wildcard in the subdomain of the redirect URI. In such cases, a remote malicious user without authentication can create a phishing link that tricks the victim into providing a UAA access code.
Understanding CVE-2019-3788
This CVE highlights a vulnerability in Cloud Foundry UAA Release that allows for an insecure redirect URI configuration, potentially leading to phishing attacks.
What is CVE-2019-3788?
CVE-2019-3788 is a security vulnerability in Cloud Foundry UAA Release versions prior to 71.0 that enables the configuration of an insecure redirect URI, allowing malicious users to craft phishing links.
The Impact of CVE-2019-3788
The vulnerability poses a high severity risk with a CVSS base score of 8.7. It can result in unauthorized access to UAA access codes and potential phishing attacks.
Technical Details of CVE-2019-3788
This section delves into the technical aspects of the CVE.
Vulnerability Description
The vulnerability allows for the configuration of an insecure redirect URI with a wildcard in the subdomain, enabling remote unauthenticated users to create phishing links.
Affected Systems and Versions
- Product: UAA Release (OSS)
- Vendor: Cloud Foundry
- Versions Affected: All versions less than v71.0
- Product: Pivotal Application Service
- Vendor: Pivotal
- Versions Affected: 2.5 and versions less than 2.5.1
Exploitation Mechanism
The vulnerability can be exploited by crafting phishing links with wildcard subdomains in the redirect URI to deceive victims into providing UAA access codes.
Mitigation and Prevention
Protecting systems from CVE-2019-3788 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Upgrade Cloud Foundry UAA Release to version 71.0 or higher to mitigate the vulnerability.
- Avoid configuring wildcards in redirect URIs to prevent exploitation.
Long-Term Security Practices
- Regularly review and update security configurations to address emerging threats.
- Educate users on phishing awareness to prevent falling victim to such attacks.
Patching and Updates
- Stay informed about security patches and updates from Cloud Foundry and Pivotal to address vulnerabilities promptly.