NVD - CVE-2021-42013

CVE-2021-42013 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

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.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score: 9.8 CRITICAL

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 7.5 HIGH

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

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
http://jvn.jp/en/jp/JVN51106450/index.html	Third Party Advisory
http://jvn.jp/en/jp/JVN51106450/index.html	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
http://packetstormsecurity.com/files/164501/Apache-HTTP-Server-2.4.50-Path-Traversal-Code-Execution.html	Exploit Third Party Advisory VDB Entry
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/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
http://packetstormsecurity.com/files/164629/Apache-2.4.49-2.4.50-Traversal-Remote-Code-Execution.html	Exploit Third Party Advisory VDB Entry
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/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
http://packetstormsecurity.com/files/165089/Apache-HTTP-Server-2.4.50-CVE-2021-42013-Exploitation.html	Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/167397/Apache-2.4.50-Remote-Code-Execution.html	Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/167397/Apache-2.4.50-Remote-Code-Execution.html	Exploit Third Party Advisory VDB Entry
http://www.openwall.com/lists/oss-security/2021/10/07/6	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/07/6	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/08/1	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/08/1	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/08/2	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/08/2	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/2021/10/08/3	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/2021/10/08/4	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/2021/10/08/5	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/2021/10/08/6	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/2021/10/09/1	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/11/4	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/11/4	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/15/3	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/15/3	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/16/1	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/10/16/1	Mailing List Third Party Advisory
https://httpd.apache.org/security/vulnerabilities_24.html	Release Notes Vendor Advisory
https://httpd.apache.org/security/vulnerabilities_24.html	Release Notes Vendor Advisory
https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb23392fc68264c72cb3%40%3Ccvs.httpd.apache.org%3E	Mailing List Patch
https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb23392fc68264c72cb3%40%3Ccvs.httpd.apache.org%3E	Mailing List Patch
https://lists.apache.org/thread.html/r7c795cd45a3384d4d27e57618a215b0ed19cb6ca8eb070061ad5d837%40%3Cannounce.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/r7c795cd45a3384d4d27e57618a215b0ed19cb6ca8eb070061ad5d837%40%3Cannounce.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/rb5b0e46f179f60b0c70204656bc52fcb558e961cb4d06a971e9e3efb%40%3Cusers.httpd.apache.org%3E	Mailing List
https://lists.apache.org/thread.html/rb5b0e46f179f60b0c70204656bc52fcb558e961cb4d06a971e9e3efb%40%3Cusers.httpd.apache.org%3E	Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RMIIEFINL6FUIOPD2A3M5XC6DH45Y3CC/	Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RMIIEFINL6FUIOPD2A3M5XC6DH45Y3CC/	Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WS5RVHOIIRECG65ZBTZY7IEJVWQSQPG3/	Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WS5RVHOIIRECG65ZBTZY7IEJVWQSQPG3/	Release Notes
https://security.gentoo.org/glsa/202208-20	Third Party Advisory
https://security.gentoo.org/glsa/202208-20	Third Party Advisory
https://security.netapp.com/advisory/ntap-20211029-0009/	Third Party Advisory
https://security.netapp.com/advisory/ntap-20211029-0009/	Third Party Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-pathtrv-LAzg68cZ	Third Party Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-pathtrv-LAzg68cZ	Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html	Patch Third Party Advisory
https://www.povilaika.com/apache-2-4-50-exploit/	Exploit Third Party Advisory
https://www.povilaika.com/apache-2-4-50-exploit/	Exploit Third Party Advisory

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability Name	Date Added	Due Date	Required Action
Apache HTTP Server Path Traversal Vulnerability	11/03/2021	11/17/2021	Apply updates per vendor instructions.

Weakness Enumeration

CWE-ID	CWE Name	Source
NVD-CWE-Other	Other	NIST
CWE-22	Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')	NIST Apache Software Foundation

Known Affected Software Configurations Switch to CPE 2.2

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Change History

34 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-42013
NVD Published Date:
10/07/2021
NVD Last Modified:
11/21/2024
Source:
Apache Software Foundation

CVE-2021-42013 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Change History

CVE Modified by CVE 11/21/2024 1:27:04 AM

Modified Analysis by NIST 7/26/2024 3:39:26 PM

CVE Modified by Apache Software Foundation 5/14/2024 5:29:56 AM

CVE Modified by Apache Software Foundation 11/06/2023 10:39:05 PM

Reanalysis by NIST 8/31/2023 12:13:27 PM

Modified Analysis by NIST 10/05/2022 2:14:33 PM

CVE Modified by Apache Software Foundation 8/15/2022 7:15:31 AM

CVE Modified by Apache Software Foundation 6/09/2022 12:15:10 AM

CVE Modified by Apache Software Foundation 6/06/2022 1:15:10 PM

CVE Modified by Apache Software Foundation 4/19/2022 8:16:25 PM

Modified Analysis by NIST 3/25/2022 2:20:25 PM

CVE Modified by Apache Software Foundation 2/07/2022 11:16:30 AM

Modified Analysis by NIST 11/30/2021 3:18:10 PM

CVE Modified by Apache Software Foundation 11/29/2021 3:15:08 PM

CVE Modified by Apache Software Foundation 11/11/2021 12:15:07 PM

Modified Analysis by NIST 11/04/2021 8:33:55 AM

CVE Modified by Apache Software Foundation 10/29/2021 9:15:09 AM

CVE Modified by Apache Software Foundation 10/25/2021 3:15:10 PM

CVE Modified by Apache Software Foundation 10/16/2021 5:15:09 AM

CVE Modified by Apache Software Foundation 10/15/2021 5:15:08 PM

Initial Analysis by NIST 10/15/2021 12:34:37 PM

CVE Modified by Apache Software Foundation 10/14/2021 11:15:06 PM

CVE Modified by Apache Software Foundation 10/13/2021 1:15:07 PM

CVE Modified by Apache Software Foundation 10/12/2021 10:15:10 PM

CVE Modified by Apache Software Foundation 10/11/2021 11:15:07 AM

CVE Modified by Apache Software Foundation 10/09/2021 5:15:07 PM

CVE Modified by Apache Software Foundation 10/08/2021 8:15:07 PM

CVE Modified by Apache Software Foundation 10/08/2021 5:15:07 PM

CVE Modified by Apache Software Foundation 10/08/2021 10:15:08 AM

CVE Modified by Apache Software Foundation 10/08/2021 5:15:08 AM

CVE Modified by Apache Software Foundation 10/08/2021 2:15:06 AM

CVE Modified by Apache Software Foundation 10/07/2021 7:15:08 PM

CVE Modified by Apache Software Foundation 10/07/2021 2:15:08 PM

CVE Modified by Apache Software Foundation 10/07/2021 1:15:08 PM

Quick Info