1. Introduction
HP SiteScope is an agentless network monitoring application running on remote web servers. It allows administrators to monitor system performance and availability, but its presence can indicate a potential attack surface. Successful exploitation could lead to information disclosure or denial of service. This vulnerability has a low impact on confidentiality, integrity, and availability.
2. Technical Explanation
The remote host is running HP SiteScope, which exposes an identifiable web interface. While not directly exploitable as a software flaw, its detection indicates potential reconnaissance activity or unauthorized monitoring of the network. Attackers may use this information to map the internal network and identify valuable assets. There are no known CVEs associated with simply *detecting* the presence of HP SiteScope; however, identifying it is often the first step in targeting systems running vulnerable versions of the application itself.
- Root cause: The presence of a monitoring application on a web server.
- Exploit mechanism: An attacker identifies the application and its version to determine potential vulnerabilities or misconfigurations.
- Scope: Web servers running HP SiteScope (formerly Mercury SiteScope).
3. Detection and Assessment
Confirming whether a system is vulnerable involves identifying if HP SiteScope is running on the web server. A quick check can be performed by examining the application banner or response headers. A thorough method includes port scanning and service enumeration.
- Quick checks: Examine the HTTP response headers for banners indicating “HP SiteScope” or similar identifiers.
- Scanning: Nessus vulnerability scan ID 67c7561c can identify HP SiteScope installations. This is an example only, and other scanners may also provide detection capabilities.
- Logs and evidence: Web server access logs may show requests to paths associated with the SiteScope web interface (e.g., /SiteScope/).
curl -I http://target_server | grep "Server: HP SiteScope"4. Solution / Remediation Steps
The primary solution is to assess whether HP SiteScope is legitimately required and, if not, remove it from the system. If required, ensure it’s running a supported version with the latest security patches. Only include steps that apply to this vulnerability.
4.1 Preparation
- Services: Stop the web server service if removing HP SiteScope.
- Dependencies: Verify no other systems depend on data collected by HP SiteScope. A roll back plan involves restoring the snapshot or reinstalling the application.
- Change window: Coordinate with system owners for a planned maintenance window.
4.2 Implementation
- Step 1: Determine if HP SiteScope is required for legitimate monitoring purposes.
- Step 2: If not required, uninstall the application using standard operating system procedures (e.g., Control Panel in Windows).
- Step 3: If required, verify the installed version of HP SiteScope and check for available updates from the vendor’s website.
- Step 4: Apply any available security patches or upgrade to a supported version.
4.3 Config or Code Example
Before
After
4.4 Security Practices Relevant to This Vulnerability
List only practices that directly address this vulnerability type. Use neutral wording and examples instead of fixed advice. For example: least privilege, input validation, safe defaults, secure headers, patch cadence.
- Practice 1: Asset inventory: Maintain an accurate list of all software installed on systems to identify unauthorized or unnecessary applications like HP SiteScope.
- Practice 2: Patch management: Regularly update all software with the latest security patches to address known vulnerabilities in legitimate applications.
4.5 Automation (Optional)
5. Verification / Validation
Confirming the fix involves verifying that HP SiteScope has been removed or updated to a secure version. Check HTTP response headers and scan results to ensure it’s no longer detectable. A simple service smoke test should confirm core web server functionality remains operational.
- Post-fix check: Run `curl -I http://target_server` and verify that the “Server” header does not include “HP SiteScope”.
- Re-test: Re-run the Nessus scan (ID 67c7561c) to confirm it no longer detects HP SiteScope.
- Smoke test: Verify core web server functionality by accessing a standard webpage hosted on the server.
- Monitoring: Monitor web server access logs for any unexpected requests related to HP SiteScope.
curl -I http://target_server | grep "Server"6. Preventive Measures and Monitoring
Suggest only measures that are relevant to the vulnerability type. Use “for example” to keep advice conditional, not prescriptive.
- Baselines: Update security baselines or policies to include a list of approved software applications and prohibit unauthorized installations.
- Pipelines: Implement application whitelisting in CI/CD pipelines to prevent the deployment of unapproved software.
- Asset and patch process: Establish a regular asset inventory review cycle and patch management schedule to identify and address potential vulnerabilities promptly.
7. Risks, Side Effects, and Roll Back
- Risk or side effect 1: Removing HP SiteScope may disrupt monitoring capabilities if it’s legitimately used by other systems.
- Risk or side effect 2: Incorrectly uninstalling software can cause system instability.
8. References and Resources
- Vendor advisory or bulletin: http://www.nessus.org/u?67c7561c
- NVD or CVE entry: Not applicable (detection of software, not a specific vulnerability).
- Product or platform documentation relevant to the fix: https://support.microfocus.com/kbdoc39824