CVE-2021-42013

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.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://httpd.apache.org/security/vulnerabilities_24.html	Vendor Advisory
https://lists.apache.org/thread.html/r7c795cd45a3384d4d27e57618a215b0ed19cb6ca8eb070061ad5d837@%3Cannounce.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/rb5b0e46f179f60b0c70204656bc52fcb558e961cb4d06a971e9e3efb@%3Cusers.httpd.apache.org%3E	Mailing List
http://www.openwall.com/lists/oss-security/2021/10/07/6	Mailing List Third Party Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-pathtrv-LAzg68cZ	Third Party Advisory
http://jvn.jp/en/jp/JVN51106450/index.html	Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/08/1	Mailing List Third Party Advisory
https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb23392fc68264c72cb3@%3Ccvs.httpd.apache.org%3E	Mailing List Vendor Advisory
http://www.openwall.com/lists/oss-security/2021/10/08/2	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/08/4	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/08/3	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/08/6	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/08/5	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/09/1	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/11/4	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RMIIEFINL6FUIOPD2A3M5XC6DH45Y3CC/	Mailing List Third Party Advisory
http://packetstormsecurity.com/files/164501/Apache-HTTP-Server-2.4.50-Path-Traversal-Code-Execution.html	Exploit Third Party Advisory VDB Entry
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WS5RVHOIIRECG65ZBTZY7IEJVWQSQPG3/	Mailing List
http://www.openwall.com/lists/oss-security/2021/10/15/3	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/16/1	Mailing List Third Party Advisory
http://packetstormsecurity.com/files/164609/Apache-HTTP-Server-2.4.50-Remote-Code-Execution.html	Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/164629/Apache-2.4.49-2.4.50-Traversal-Remote-Code-Execution.html	Exploit Third Party Advisory VDB Entry
https://security.netapp.com/advisory/ntap-20211029-0009/	Third Party Advisory
http://packetstormsecurity.com/files/164941/Apache-HTTP-Server-2.4.50-Remote-Code-Execution.html	Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/165089/Apache-HTTP-Server-2.4.50-CVE-2021-42013-Exploitation.html	Third Party Advisory VDB Entry
https://www.oracle.com/security-alerts/cpujan2022.html	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html	Patch Third Party Advisory
http://packetstormsecurity.com/files/167397/Apache-2.4.50-Remote-Code-Execution.html	Exploit Third Party Advisory
https://www.povilaika.com/apache-2-4-50-exploit/	Exploit Third Party Advisory
https://security.gentoo.org/glsa/202208-20	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:apache:http_server:2.4.49:::::::*
	cpe:2.3:a:apache:http_server:2.4.50:::::::*

Configuration 2 (hide)

OR	cpe:2.3:o:fedoraproject:fedora:34:::::::*
	cpe:2.3:o:fedoraproject:fedora:35:::::::*

Configuration 3 (hide)

OR	cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:::::::*
	cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:::::::*
	cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:::::::*
	cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools::::::::
	cpe:2.3:a:oracle:secure_backup::::::::

Configuration 4 (hide)

cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*

Information

Published : 2021-10-07 09:15

Updated : 2022-10-05 11:14

NVD link : CVE-2021-42013

Mitre link : CVE-2021-42013

JSON object : View

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Products Affected

netapp

cloud_backup

oracle

instantis_enterprisetrack
secure_backup
jd_edwards_enterpriseone_tools

apache

http_server

fedoraproject

fedora

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9.8 /10