CVE-2019-8991 Explained : Impact and Mitigation

TIBCO Active Matrix Service Grid Administrator With Multiple Cross-Site Scripting and Cross-Site Request Forgery Vulnerabilities

Understanding CVE-2019-8991

This CVE involves multiple vulnerabilities in the administrator web interface of various TIBCO software products, potentially leading to cross-site scripting (XSS) and cross-site request forgery (CSRF) attacks.

What is CVE-2019-8991?

The vulnerabilities in the web interfaces of TIBCO ActiveMatrix BPM, TIBCO ActiveMatrix Policy Director, TIBCO ActiveMatrix Service Bus, TIBCO ActiveMatrix Service Grid, and TIBCO Silver Fabric Enablers may allow attackers to execute XSS and CSRF attacks.

The Impact of CVE-2019-8991

The vulnerabilities could enable unprivileged remote attackers to gain full access to the capabilities of the affected software's web interface.

Technical Details of CVE-2019-8991

Vulnerability Description

The vulnerabilities in the administrator web interfaces of TIBCO products could result in XSS and CSRF attacks.

Affected Systems and Versions

TIBCO ActiveMatrix BPM: versions up to and including 4.2.0
TIBCO ActiveMatrix BPM Distribution for TIBCO Silver Fabric: versions up to and including 4.2.0
TIBCO ActiveMatrix Policy Director: versions up to and including 1.1.0
TIBCO ActiveMatrix Service Bus: versions up to and including 3.3.0
TIBCO ActiveMatrix Service Grid: versions up to and including 3.3.1
TIBCO Silver Fabric Enabler for ActiveMatrix BPM: versions up to and including 1.4.1
TIBCO Silver Fabric Enabler for ActiveMatrix Service Grid: versions up to and including 1.3.1

Exploitation Mechanism

The vulnerabilities could be exploited through malicious scripts injected via the affected web interfaces.

Mitigation and Prevention

Immediate Steps to Take

Update TIBCO ActiveMatrix BPM to version 4.3.0 or higher
Update TIBCO ActiveMatrix BPM Distribution for TIBCO Silver Fabric to version 4.3.0 or higher
Update TIBCO ActiveMatrix Policy Director to version 2.0.0 or higher
Update TIBCO ActiveMatrix Service Bus to TIBCO ActiveMatrix Service Grid version 3.4.0 or higher
Update TIBCO ActiveMatrix Service Grid to version 3.4.0 or higher
Update TIBCO Silver Fabric Enabler for ActiveMatrix BPM to version 1.4.2 or higher
Update TIBCO Silver Fabric Enabler for ActiveMatrix Service Grid to version 1.3.2 or higher

Long-Term Security Practices

Regularly monitor and update software versions
Implement security best practices for web interfaces

Patching and Updates

TIBCO has released updated versions for the affected components to address these vulnerabilities.