How to remediate – Novell Identity Manager Role Based Provisioning Module Detection

1. Introduction

Novell Identity Manager Role Based Provisioning Module Detection indicates a web interface for Novell Identity Manager is accessible on your network. This identity management solution controls access to systems and data, so exposure creates a potential attack surface. Affected systems are typically enterprise servers running the Novell Identity Manager software suite. A successful exploit could compromise user accounts and allow unauthorised access to sensitive information. Confidentiality, integrity, and availability may all be impacted.

2. Technical Explanation

The vulnerability is the presence of a publicly accessible web interface for Novell Identity Manager. Attackers can attempt to exploit known weaknesses in the application or use it as a stepping stone to other attacks. Preconditions include network connectivity to the exposed interface and potential default credentials or weak authentication. There is no specific CVE currently associated with simply detecting the interface, but vulnerabilities within the software itself may exist.

• Root cause: The web interface is accessible from outside of intended networks without sufficient protection.
• Exploit mechanism: An attacker could attempt to brute-force login credentials or exploit known application flaws via HTTP requests. For example, an attacker might use a tool like Burp Suite to identify and target vulnerable endpoints within the web interface.
• Scope: Affected platforms are servers running Novell Identity Manager Role Based Provisioning Module. Specific versions depend on your deployment.

3. Detection and Assessment

Confirm exposure by checking for the presence of the web interface. A quick check can identify if it is listening on standard ports. Thorough assessment involves identifying the version and configuration.

• Quick checks: Use netstat -an | grep 80 or netstat -an | grep 443 to see if the interface is listening on HTTP/HTTPS ports.
• Scanning: Nessus plugin ID 16729 can detect Novell Identity Manager, but results may vary depending on configuration. This is an example only.
• Logs and evidence: Check web server logs for requests targeting paths associated with the Novell Identity Manager interface (e.g., /idm/). Event IDs will depend on your logging setup.

netstat -an | grep 80

4. Solution / Remediation Steps

Fix this issue by restricting access to the web interface or removing it if not required. Follow these steps carefully.

4.1 Preparation

• Dependencies include network configuration and firewall rules. Roll back by restoring the snapshot or reverting configuration changes.
• A change window may be required, depending on your organisation’s policies. Approval from a system owner is recommended.

4.2 Implementation

1. Step 1: Configure the firewall to block external access to ports 80 and 443 for the Novell Identity Manager server.
2. Step 2: If the interface is not required, uninstall the Role Based Provisioning Module.
3. Step 3: Verify that internal access remains functional if needed.

4.3 Config or Code Example

Before

# iptables rule allowing access from any source
iptables -A INPUT -p tcp --dport 80 -j ACCEPT

After

# iptables rule blocking access from all sources except trusted networks
iptables -A INPUT -p tcp --dport 80 -s / -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP

4.4 Security Practices Relevant to This Vulnerability

Several security practices can help prevent this issue. Least privilege reduces the impact of exploitation, while network segmentation limits exposure.

• Practice 1: Implement least privilege access controls to restrict who can access sensitive systems and data.
• Practice 2: Use network segmentation to isolate critical servers from public networks.

4.5 Automation (Optional)

# Example Ansible playbook snippet to block external access via firewall
- name: Block external access to Novell Identity Manager ports
  firewalld:
    port: 80/tcp
    permanent: true
    state: disabled
    zone: public
  become: true

5. Verification / Validation

Confirm the fix by checking firewall rules and verifying that external access is blocked. A smoke test ensures functionality remains.

• Post-fix check: Run iptables -L | grep 80 to confirm the blocking rule is in place.
• Re-test: Repeat the quick check (netstat -an | grep 80) and ensure no external connections are allowed.
• Smoke test: Verify that internal users can still access any required functionality through the interface, if applicable.
• Monitoring: Monitor firewall logs for blocked connection attempts to ports 80 and 443 from untrusted sources. This is an example only.

iptables -L | grep 80

6. Preventive Measures and Monitoring

Update security baselines and implement CI/CD checks to prevent similar issues. A regular patch cycle helps address known vulnerabilities.

• Baselines: Update your server baseline or hardening guide to include firewall rules blocking unnecessary external access.
• Pipelines: Add static analysis (SAST) tools to your CI pipeline to identify insecure configurations and potential vulnerabilities in code.
• Asset and patch process: Implement a regular patch cycle for all servers, including Novell Identity Manager components.

7. Risks, Side Effects, and Roll Back

Blocking access could disrupt legitimate users if not configured correctly. Restore the snapshot or revert firewall changes to roll back.

8. References and Resources

• Vendor advisory or bulletin: https://www.netiq.com/products/identity-manager/advanced/