QID 87465

Date Published: 2021-10-06

QID 87465: Apache Hypertext Transfer Protocol Server (HTTP Server) Path Traversal and Null Pointer Dereference Vulnerabilities

Apache HTTP Server is an HTTP web server application.

CVEs' and the type of vulnerabilities related to this are:
CVE-2021-41773: Path Traversal and File Disclosure vulnerability
CVE-2021-41524: Null Pointer Dereference Vulnerability

Affected Versions:
Apache Server version 2.4.49 only.
QID Detections Logic:
The QID sends a crafted GET request to see if the contents of /etc/passwd are revealed in the response.

An attacker could use a path traversal attack to map URLs to files outside the expected document root. If files outside of the document root are not protected by "require all denied" these requests can succeed. Additionally this flaw could leak the source of interpreted files like CGI scripts.

The Null Pointer Dereference Vulnerability could allow an external attacker to perform Denial of Service (DoS) attack on the target Apache server

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as Medium - 4.3 severity.
    • Solution
    Customers are advised to update to Apache HTTP Server 2.4.50. For more information refer to Apache HTTP Server

    Vendor References

    CVEs related to QID 87465

    CVE-2021-41773 | CVE-2021-41524 |
    Software Advisories
    Advisory ID Software Component Link
    Apache HTTP Server URL Logo httpd.apache.org/download.cgi
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