CVE-2017-18262 : Vulnerability Insights and Analysis

Blackboard Learn has a vulnerability that enables Unvalidated Redirects for logged-in users through Shibboleth logins.

Understanding CVE-2017-18262

Blackboard Learn allows Unvalidated Redirects for signed-in users, posing a security risk.

What is CVE-2017-18262?

This CVE highlights a flaw in Blackboard Learn that permits Unvalidated Redirects for any authenticated user via Shibboleth login endpoints.

The Impact of CVE-2017-18262

The vulnerability can be exploited to redirect users to malicious websites, potentially leading to phishing attacks or the installation of malware.

Technical Details of CVE-2017-18262

Blackboard Learn's security issue is detailed below.

Vulnerability Description

Unvalidated Redirects are enabled for all logged-in users through the Shibboleth login endpoints in Blackboard Learn.

Affected Systems and Versions

Product: Blackboard Learn
Vendor: Blackboard
Versions: All versions are affected

Exploitation Mechanism

The vulnerability is exploited by manipulating the webapps/bb-auth-provider-shibboleth-BBLEARN/execute/shibbolethLogin?returnUrl= URI.

Mitigation and Prevention

Protect your system from CVE-2017-18262 with the following steps.

Immediate Steps to Take

Disable Unvalidated Redirects in Blackboard Learn settings.
Educate users about phishing risks and suspicious URLs.
Monitor and restrict outbound traffic to unknown domains.

Long-Term Security Practices

Regularly update and patch Blackboard Learn to address security vulnerabilities.
Implement multi-factor authentication to enhance user login security.

Patching and Updates

Apply security patches provided by Blackboard promptly to mitigate the vulnerability.