CVEPublished 2021-10-071 article on news7 live referencesNVD data

CVE-2021-42013

Vulnerability data via CVEDB (Shodan)

CISA KEVKnown exploited in the wild.Used in ransomware
CISA action: 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.
CVSS v3.1
9.8
CRITICAL
EPSS percentile
100
Exploit Prediction Scoring System · top 0% of all CVEs
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.

Timeline
Published 2021-10-07

External references

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Known PoCs on GitHub (8)