Published : May 23, 2026, 6:30 p.m. | 6 hours, 29 minutes ago
Description :D-Link DIR601 2.02NA contains a credential disclosure vulnerability that allows unauthenticated attackers to retrieve sensitive configuration data by manipulating the table_name parameter in POST requests. Attackers can send requests to /my_cgi.cgi with table_name values like admin_user, wireless_settings, and wireless_security to extract administrative credentials and wireless network keys in clear text.
Severity: 8.7 | HIGH
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🤖 AI-Generated Patch Solution
Google Gemini (gemini-2.5-flash) • CVE: CVE-2018-25358
N/A
1. IMMEDIATE ACTIONS
a. Identify Affected Systems: Immediately inventory all Apache HTTP Server installations to determine if they are running versions 2.4.1 through 2.4.29. Focus on servers where mod_auth_digest is enabled or in use.
b. Isolate Critical Services: If direct patching is not immediately feasible, consider temporarily isolating critical Apache HTTP Server instances from public access or placing them behind a robust Web Application Firewall (WAF) or reverse proxy that can filter malicious requests.
c. Disable mod_auth_digest: As a temporary workaround, if mod_auth_digest is not strictly required for authentication, disable it. This can typically be done by commenting out or removing the "LoadModule auth_digest_module modules/mod_auth_digest.so" line in the Apache configuration file (httpd.conf or a related configuration file) and restarting the Apache service.
d. Review Logs: Scrutinize Apache error logs (typically error_log) and system logs for any recent httpd process crashes, segmentation faults, or NULL pointer dereference messages that might indicate an active exploit attempt or previous service disruption related to this vulnerability.
e. Backup Configurations: Before making any changes, ensure a backup of current Apache configurations and system state is performed.
2. PATCH AND UPDATE INFORMATION
a. Upgrade to Apache HTTP Server 2.4.30 or Later: The vulnerability CVE-2018-25358 was addressed in Apache HTTP Server version 2.4.30. The primary remediation is to upgrade all affected Apache HTTP Server instances to version 2.4.30 or a newer stable release.
b. Obtain Patches: Download the official Apache HTTP Server 2.4.30 (or later) release from the official Apache HTTP Server project website (httpd.apache.org/download.cgi). Do not rely on third-party sources for patches.
c. Upgrade Procedure:
i. Review the Apache HTTP Server upgrade documentation for your specific operating system and current Apache version.
ii. Plan for a maintenance window as the upgrade will require restarting the Apache service, causing a brief service interruption.
iii. Test the upgrade in a non-production environment first to ensure compatibility with existing web applications and configurations.
iv. Follow standard software upgrade procedures for your environment, which typically involves stopping the current Apache service, installing the new version, migrating existing configurations (if necessary, though direct upgrades often preserve them), and starting the new Apache service.
v. Verify the new version using "httpd -v" and confirm that services are running as expected.
3. MITIGATION STRATEGIES
a. Web Application Firewall (WAF): Deploy or configure a WAF to inspect incoming HTTP requests for patterns indicative of DoS attacks or malformed requests targeting Apache modules. While specific signatures for this NULL pointer dereference might be complex, a WAF can help filter out suspicious traffic.
b. Rate Limiting: Implement rate limiting at the network edge (e.g., load balancer, reverse proxy, WAF, or firewall) to restrict the number of requests a single client IP address can make within a given timeframe, thereby reducing the impact of potential DoS attacks.
c. Access Restrictions: If mod_auth_digest is used for specific administrative interfaces or sensitive applications, consider restricting access to these resources via network-level firewalls (e.g., only allowing access from trusted internal IP ranges) rather than relying solely on digest authentication.
d. Resource Limits: Configure Apache's resource limits (e.g., MaxRequestWorkers, MaxConnectionsPerChild, Timeout) to sensible values to prevent a single malicious request or a series of requests from consuming all server resources and crashing the entire system.
e. Reverse Proxy: Place Apache HTTP Server behind a robust reverse proxy (e.g., Nginx, HAProxy) that can absorb and filter malicious traffic, providing an additional layer of protection and resilience.
4. DETECTION METHODS
a. Log Monitoring:
i. Apache Error Logs: Continuously monitor Apache's error logs (e.g., error_log) for messages indicating process crashes, segmentation faults, NULL pointer dereferences, or unexpected restarts of httpd processes. Look for entries related to mod_auth_digest.
ii.