CVE-2021-41773

CVSS 3.1 Score 7.5 of 10 (high)

Details

Published Oct 5, 2021
Updated: Jul 26, 2024
CWE ID 22

Summary

CVE-2021-41773 is a vulnerability affecting Apache HTTP Server 2.4.49, where a path traversal issue was discovered in a recent change to path normalization. An attacker can exploit this flaw to map URLs to files located outside the directories configured by Alias-like directives, potentially gaining unauthorized access to CGI scripts if not properly secured. This vulnerability has been observed in real-world attacks and is not present in earlier Apache versions. The fix implemented in Apache HTTP Server 2.4.50 was found to be incomplete, and additional mitigations are recommended.

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Affected Products

  • Oracle Instantis Enterprisetrack
  • Fedora Operating System
  • Apache Software Foundation Apache HTTP Server

Affected Vendors

  • Apache Software Foundation
  • Fedora Project
  • BonqDAO

Advisories, Assessments, and Mitigations

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