1. Introduction
IBM Domino Web Administrator is affected by multiple vulnerabilities, allowing authenticated users to perform actions they should not be able to. This can lead to cross-site request forgery (CSRF) and cross-site scripting attacks. These issues primarily affect systems running IBM Domino versions 8.5.x and 9.0.x. A successful exploit could compromise the confidentiality, integrity, or availability of the affected system.
2. Technical Explanation
The vulnerabilities stem from features within the IBM Domino Web Administrator (webadmin.nsf). Specifically, an unspecified CSRF vulnerability allows an attacker to entice a user into following a malicious URL, and cross-site scripting vulnerabilities allow an authenticated user to inject scripts that can be executed in the context of their session. Exploitation requires authentication to the Domino web server.
- Root cause: The Domino Web Administrator does not properly validate requests or sanitize input, leading to CSRF and XSS issues.
- Exploit mechanism: An attacker could craft a malicious URL containing a CSRF payload or an XSS script and deliver it to an authenticated user via phishing or other means.
- Scope: IBM Domino versions 8.5.x and 9.0.x are affected.
3. Detection and Assessment
You can confirm if a system is vulnerable by checking whether the Domino Web Administrator interface is accessible. A thorough assessment involves scanning for XSS and CSRF vulnerabilities using dedicated security tools.
- Quick checks: Access the Domino Web Administrator interface in a web browser (typically at
https://your_domino_server/webadmin.nsf). If it loads, the component is present. - Scanning: Nessus vulnerability ID 12d94515 can be used to check for accessibility of Domino Web Administrator. Other scanners may have specific checks for XSS and CSRF in web applications.
- Logs and evidence: Review Domino server logs for suspicious requests or script injections related to the webadmin.nsf application.
# Example command placeholder:
# Accessing the URL via a browser is the primary check.
4. Solution / Remediation Steps
The recommended solution is to discontinue use of Domino Web Administrator as it has been deprecated. Refer to IBM’s documentation for alternative administration methods and remediation recommendations.
4.1 Preparation
- Consider a change window if you are disabling access to the webadmin interface, as it may be used by administrators.
4.2 Implementation
- Step 1: Disable access to the Domino Web Administrator interface (webadmin.nsf). This can typically be done through Domino server configuration settings.
- Step 2: Configure alternative administration tools and methods for managing your IBM Domino environment.
4.3 Config or Code Example
Before
# Access to webadmin.nsf is enabled by default. No specific configuration required for access.
After
# Disable access to webadmin.nsf through Domino server settings or firewall rules.
# Example: Block access via firewall rule, or remove the application from the list of accessible applications in Domino's configuration.
4.4 Security Practices Relevant to This Vulnerability
Several security practices can help prevent similar vulnerabilities. Least privilege reduces the impact if an attacker gains unauthorized access. Input validation prevents malicious scripts from being injected into web applications.
- Practice 1: Implement least privilege principles, granting users only the necessary permissions to perform their tasks.
- Practice 2: Enforce input validation on all user-supplied data to prevent XSS and other injection attacks.
4.5 Automation (Optional)
5. Verification / Validation
Confirm the fix by verifying that access to the Domino Web Administrator interface is disabled and that alternative administration methods are functioning correctly. Perform a negative test to ensure an attacker cannot exploit the vulnerabilities.
- Post-fix check: Attempt to access
https://your_domino_server/webadmin.nsfin a web browser. You should receive an error message or be redirected. - Re-test: Re-run the quick check from Section 3. Access to the interface should no longer be possible.
- Smoke test: Verify that you can still administer your Domino server using alternative tools and methods, such as the Domino Administrator client.
- Monitoring: Monitor Domino server logs for any attempts to access the webadmin.nsf application.
# Example command and expected output:
# Attempting to access https://your_domino_server/webadmin.nsf should result in a "Page Not Found" or similar error message.
6. Preventive Measures and Monitoring
Update security baselines to reflect the deprecation of Domino Web Administrator. Implement checks in CI/CD pipelines to prevent the deployment of vulnerable configurations. Establish a regular patch review cycle for all Domino servers.
- Baselines: Update your security baseline or policy to explicitly prohibit the use of Domino Web Administrator.
- Pipelines: Add static analysis tools (SAST) to your CI/CD pipeline to identify potential XSS and CSRF vulnerabilities in web applications.
- Asset and patch process: Implement a regular review cycle for all Domino servers to ensure they are running the latest security patches and configurations.
7. Risks, Side Effects, and Roll Back
Disabling access to Domino Web Administrator may disrupt existing administration workflows if alternative tools have not been configured. The roll back steps involve re-enabling access to the interface through Domino server configuration settings.
- Roll back: Step 1: Re-enable access to the Domino Web Administrator interface through Domino server configuration settings.
8. References and Resources
- Vendor advisory or bulletin: http://www-01.ibm.com/support/docview.wss?uid=swg21652988
- NVD or CVE entry: http://www.nessus.org/u?12d94515