Quick Summary
Default Apache Status Page Enabled is a security misconfiguration where the Apache mod_status module is enabled and publicly accessible. This may expose sensitive server information including active connections, internal IP addresses, request details, and server performance metrics, aiding attackers in reconnaissance and targeted attacks.
Vulnerability Classification
| Field | Value |
|---|---|
| Vulnerability Type | Information Disclosure |
| CWE ID | CWE-200 – Exposure of Sensitive Information to an Unauthorized Actor |
| CVE ID | N/A (Configuration Issue) |
| CVSS 4.0 Base Score | 6.8 (Medium) |
| CVSS Vector | AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N |
| OWASP Category | A05:2021 – Security Misconfiguration |
| Attack Surface | External / Internal Network |
Affected Asset / Environment
- Service: Apache HTTP Server
- Module: mod_status
- Common Path: /server-status
- Ports: 80, 443
- Testing Method: External / Black-box Assessment
- Tools Used: Nmap, curl, Browser Access
Description
The assessor observed that the Apache server-status page is accessible without authentication or IP restriction. The mod_status module provides real-time information about server performance, active requests, client IP addresses, and worker status.
When exposed publicly, attackers can gather intelligence about server activity, identify valid endpoints, monitor active user sessions, and determine backend architecture.
Although not directly exploitable for code execution, exposed status pages significantly enhance reconnaissance capabilities.
Root Cause
The issue occurs due to improper Apache configuration where the mod_status module is enabled without access restrictions.
Common root causes include:
- Default Apache configuration left unchanged
- No IP-based restriction applied
- Lack of authentication for status page
- Misconfigured virtual host settings
Business Impact
Exploitation of this vulnerability may allow attackers to gather operational intelligence about the web server. This information may assist in identifying high-value targets, session identifiers, or backend systems.
Exposure of internal IP addresses and request details may increase the likelihood of targeted attacks.
In high-traffic environments, disclosure of server performance metrics may reveal infrastructure capacity and behavior patterns.
Technical Impact
An attacker can:
- View active HTTP requests
- Identify client IP addresses
- Enumerate accessed URLs
- Discover server load metrics
- Identify worker process details
This information may assist in planning denial-of-service or application-layer attacks.
Proof of Concept (PoC)
Step1: Identify Apache Service
nmap -sV -p 80,443 <target-ip>
If Apache HTTP Server is detected, proceed to check status page.
Step2: Access Server Status Page
curl http://<target-ip>/server-status
If detailed server statistics are displayed without authentication, exposure is confirmed.
Step3: Check Extended Status (If Enabled)
curl http://<target-ip>/server-status?auto
If structured output with active connections is returned, detailed status is publicly accessible.
Exploitation Prerequisites
- Web server accessible
- mod_status enabled
- No authentication or IP restriction configured
Remediation
It is recommended that access to the Apache status page be restricted.
Recommended actions:
- Disable mod_status module if not required
- Restrict access to localhost or trusted IP addresses
- Implement authentication for /server-status
- Configure proper virtual host security settings
- Regularly audit web server configurations
After applying changes, verify that unauthorized users cannot access the status page.
Detection and Monitoring
- Monitor web logs for access to /server-status
- Alert on repeated external access attempts
- Conduct periodic configuration reviews
- Restrict management endpoints from public exposure