Exploited
critical
9.8
CWE
22
Advisory Published
Updated

CVE-2021-42013: Apache HTTP Server Path Traversal Vulnerability

First published: Thu Oct 07 2021(Updated: )

Apache HTTP Server contains a path traversal vulnerability that allows an attacker to perform remote code execution if files outside directories configured by Alias-like directives are not under default require all denied or if CGI scripts are enabled. This CVE ID resolves an incomplete patch for CVE-2021-41773.

Credit: security@apache.org security@apache.org security@apache.org

Affected SoftwareAffected VersionHow to fix
Apache HTTP server=2.4.49
Apache HTTP server=2.4.50
Fedoraproject Fedora=34
Fedoraproject Fedora=35
Oracle Instantis Enterprisetrack=17.1
Oracle Instantis Enterprisetrack=17.2
Oracle Instantis Enterprisetrack=17.3
Oracle Jd Edwards Enterpriseone Tools<9.2.6.0
Oracle Secure Backup<18.1.0.1.0
Netapp Cloud Backup
Apache HTTP server
=2.4.49
=2.4.50
=34
=35
=17.1
=17.2
=17.3
<9.2.6.0
<18.1.0.1.0

Remedy

https://www.oracle.com/security-alerts/cpuapr2022.html

Remedy

https://www.oracle.com/security-alerts/cpujan2022.html

Remedy

https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb23392fc68264c72cb3%40%3Ccvs.httpd.apache.org%3E

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Reference Links

Frequently Asked Questions

  • What is the vulnerability ID?

    The vulnerability ID is CVE-2021-42013.

  • What is the title of the vulnerability?

    The title of the vulnerability is Apache HTTP Server Path Traversal Vulnerability.

  • What is the severity of CVE-2021-42013?

    The severity of CVE-2021-42013 is critical with a CVSS score of 9.8.

  • How does CVE-2021-42013 affect Apache HTTP Server?

    CVE-2021-42013 affects Apache HTTP Server versions 2.4.49 and 2.4.50.

  • How can I fix the Apache HTTP Server Path Traversal Vulnerability (CVE-2021-42013)?

    To fix the vulnerability, update Apache HTTP Server to version 2.4.51 or apply the necessary patches provided by the vendor.

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