CVE-2024-38476 Overview
Vulnerability in core of Apache HTTP Server 2.4.59 and earlier are vulnerably to information disclosure, SSRF or local script execution via backend applications whose response headers are malicious or exploitable.
Users are recommended to upgrade to version 2.4.60, which fixes this issue.
Critical Impact
This vulnerability can lead to unauthorized information disclosure, SSRF, and possible local script execution.
Affected Products
- Apache HTTP Server 2.4.59 and earlier
- NetApp Clustered Data ONTAP 9.0
- Additional variations of Apache HTTP Server
Discovery Timeline
- Not Available - Vulnerability discovered
- Not Available - Responsible disclosure to Apache
- Not Available - CVE CVE-2024-38476 assigned
- Not Available - Apache releases security patch
- 2024-07-01 - CVE CVE-2024-38476 published to NVD
- 2025-11-03 - Last updated in NVD database
Technical Details for CVE-2024-38476
Vulnerability Analysis
Vulnerability arises when Apache HTTP Server interacts with backend applications that may return malicious response headers. These headers could potentially lead to unauthorized information disclosure, server-side request forgery (SSRF), or execution of local scripts.
Root Cause
The root cause of this vulnerability is improper handling of response headers from backend applications.
Attack Vector
Attackers exploit this vulnerability remotely by sending crafted requests to a vulnerable Apache HTTP Server setup.
# Hypothetical exploitation example
curl -H "Exploit-Header: MaliciousContent" http://vulnerable-apache-server/
Detection Methods for CVE-2024-38476
Indicators of Compromise
- Unexpected response headers in Apache logs
- Anomalous network traffic patterns
- Unusual script execution on local server environments
Detection Strategies
Monitor for unexpected response headers and anomalies in HTTP requests, especially from external sources attempt to probe internal networks.
Monitoring Recommendations
Implement logging for all HTTP headers received and analyze for anomalies. Utilize SentinelOne's XDR solutions for real-time threat detection and contextual analysis.
How to Mitigate CVE-2024-38476
Immediate Actions Required
- Upgrade Apache HTTP Server to version 2.4.60
- Implement stricter HTTP header validation
- Audit and secure backend applications interacting with Apache
Patch Information
Patches are available from Apache’s official website. Upgrade to version 2.4.60 to mitigate this vulnerability.
Workarounds
Until a full upgrade can be performed, configure Apache to restrict and validate external requests and responses.
# Example Apache configuration to mitigate vulnerability
<Location "/">
RequestHeader unset "Exploit-Header"
Header always set X-Content-Type-Options "nosniff"
</Location>
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
