QID 150373

Date Published: 2021-10-19

QID 150373: Apache HTTP Server Remote Code Execution (CVE-2021-41773)

The Apache HTTP Server, colloquially called Apache, is a free and open-source cross-platform web server software.

The affected version of the Apache server allows remote attackers to read files via a Path Traversal vulnerability. This vulnerability only impacts Apache HTTP Server version 2.4.49 with the Require all denied access control configuration disabled. When mod_cgi module is enabled for these aliased paths, it leads to Remote Code Execution on the target server.

QID Detection Logic (Unauthenticated) :
This QID sends a crafted HTTP POST request to /bin/sh with payload to check if the target is exploitable.

Successful exploitation of the vulnerability will allow remote attacker to execute arbitrary code on the target system.

  • 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. For more information refer to Apache HTTP Server

    Vendor References

    CVEs related to QID 150373

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