9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.975 High
EPSS
Percentile
100.0%
Severity: Critical
Date : 2021-10-21
CVE-ID : CVE-2021-42013
Package : apache
Type : directory traversal
Remote : Yes
Link : https://security.archlinux.org/AVG-2450
The package apache before version 2.4.51-1 is vulnerable to directory
traversal.
Upgrade to 2.4.51-1.
The problem has been fixed upstream in version 2.4.51.
None.
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 βrequire all deniedβ, 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.
A remote attacker could trick the HTTP server into executing arbitrary
executables in its file system through path traversal.
https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2021-42013
https://twitter.com/roman_soft/status/1446252280597078024
https://github.com/icing/blog/blob/main/httpd-2.4.50.md
https://svn.apache.org/viewvc?view=revision&revision=1893971
https://security.archlinux.org/CVE-2021-42013
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.975 High
EPSS
Percentile
100.0%