Apache » Http Server : Security Vulnerabilities, CVEs, Published In 2021 (Directory traversal)
CVE-2021-42013
Known exploited
Public exploit
Used for ransomware
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.
Max CVSS
9.8
EPSS Score
97.40%
Published
2021-10-07
Updated
2023-08-31
CISA KEV Added
2021-11-03
CVE-2021-41773
Known exploited
Public exploit
Used for ransomware
A flaw was found in a change made to path normalization in Apache HTTP Server 2.4.49. 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 is known to be exploited in the wild. This issue only affects Apache 2.4.49 and not earlier versions. The fix in Apache HTTP Server 2.4.50 was found to be incomplete, see CVE-2021-42013.
Max CVSS
7.5
EPSS Score
97.46%
Published
2021-10-05
Updated
2022-10-28
CISA KEV Added
2021-11-03
2 vulnerabilities found