Apache HTTP Server CVE-2021-42013 Path Traversal Vulnerability

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.

Outbreak Alert

Zerobot is a Go-based botnet that spreads primarily through IoT and web application vulnerabilities. According to Fortinet research analysis the most recent distribution of Zerobot includes additional capabilities such a new DDoS attack capabilities and exploiting Apache vulnerabilities.

View the full Outbreak Alert Report

Affected Applications

HTTP Server

CVE References

Other References