Finding #128 — CVE-2021-42013
| Inventory item | apache-test 2.4.37 (software, apache) |
|---|---|
| Title | Apache HTTP Server: Apache HTTP Server Path Traversal Vulnerability |
| Match | keyword / confidence low |
| Status | new |
| First seen | 2026-06-11T07:35:12Z |
| Last updated | 2026-06-11T07:35:12Z |
| CVE | CVE-2021-42013 KEV since 2021-11-03 |
| CVSS | 9.8 (CRITICAL)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Description | It was found that the fix for CVE-2021-41773 in Apache HTTP Server 2.4.50 was insufficient. An attacker could use a path traversal attack to map URLs to files outside the directories configured by Alias-like directives. If files outside of these directories are not protected by the usual default configuration "require all denied", these requests can succeed. If CGI scripts are also enabled for these aliased pathes, this could allow for remote code execution. This issue only affects Apache 2.4.49 and Apache 2.4.50 and not earlier versions. |
| Source advisory | Apache HTTP Server: Apache HTTP Server Path Traversal Vulnerability 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. The original patch issued under this CVE ID is insufficient, please review remediation information under CVE-2021-42013. |
| References | http://jvn.jp/en/jp/JVN51106450/index.html http://packetstormsecurity.com/files/164501/Apache-HTTP-Server-2.4.50-Path-Traversal-Code-Execution.html http://packetstormsecurity.com/files/164609/Apache-HTTP-Server-2.4.50-Remote-Code-Execution.html http://packetstormsecurity.com/files/164629/Apache-2.4.49-2.4.50-Traversal-Remote-Code-Execution.html http://packetstormsecurity.com/files/164941/Apache-HTTP-Server-2.4.50-Remote-Code-Execution.html http://packetstormsecurity.com/files/165089/Apache-HTTP-Server-2.4.50-CVE-2021-42013-Exploitation.html http://packetstormsecurity.com/files/167397/Apache-2.4.50-Remote-Code-Execution.html http://www.openwall.com/lists/oss-security/2021/10/07/6 http://www.openwall.com/lists/oss-security/2021/10/08/1 http://www.openwall.com/lists/oss-security/2021/10/08/2 http://www.openwall.com/lists/oss-security/2021/10/08/3 http://www.openwall.com/lists/oss-security/2021/10/08/4 http://www.openwall.com/lists/oss-security/2021/10/08/5 http://www.openwall.com/lists/oss-security/2021/10/08/6 http://www.openwall.com/lists/oss-security/2021/10/09/1 |