CVE-2021-42013 | Severity.io

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.

Related CPE's

apache

http_server

fedoraproject

fedora

oracle

instantis_enterprisetrack

oracle

jd_edwards_enterpriseone_tools

Vulnerable

Vulnerable

Vulnerable

References

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

ExploitThird Party AdvisoryVDB Entry

http://packetstormsecurity.com/files/164609/Apache-HTTP-Server-2.4.50-Remote-Code-Execution.html

ExploitThird Party AdvisoryVDB Entry

http://packetstormsecurity.com/files/164629/Apache-2.4.49-2.4.50-Traversal-Remote-Code-Execution.html

ExploitThird Party AdvisoryVDB Entry

http://packetstormsecurity.com/files/164941/Apache-HTTP-Server-2.4.50-Remote-Code-Execution.html

ExploitThird Party AdvisoryVDB Entry

http://packetstormsecurity.com/files/165089/Apache-HTTP-Server-2.4.50-CVE-2021-42013-Exploitation.html

Third Party AdvisoryVDB Entry

http://packetstormsecurity.com/files/167397/Apache-2.4.50-Remote-Code-Execution.html

ExploitThird Party AdvisoryVDB Entry

http://www.openwall.com/lists/oss-security/2021/10/07/6

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/08/1

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/08/2

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/08/3

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/08/4

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/08/5

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/08/6

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/09/1

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/11/4

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/15/3

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/16/1

Mailing ListThird Party Advisory

https://httpd.apache.org/security/vulnerabilities_24.html

Release NotesVendor Advisory

https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb23392fc68264c72cb3%40%3Ccvs.httpd.apache.org%3E

Mailing ListPatch

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.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://security.gentoo.org/glsa/202208-20

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://www.oracle.com/security-alerts/cpuapr2022.html

PatchThird Party Advisory

https://www.oracle.com/security-alerts/cpujan2022.html

PatchThird Party Advisory

https://www.povilaika.com/apache-2-4-50-exploit/

ExploitThird 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

ExploitThird Party AdvisoryVDB Entry

http://packetstormsecurity.com/files/164609/Apache-HTTP-Server-2.4.50-Remote-Code-Execution.html

ExploitThird Party AdvisoryVDB Entry

http://packetstormsecurity.com/files/164629/Apache-2.4.49-2.4.50-Traversal-Remote-Code-Execution.html

ExploitThird Party AdvisoryVDB Entry

http://packetstormsecurity.com/files/164941/Apache-HTTP-Server-2.4.50-Remote-Code-Execution.html

ExploitThird Party AdvisoryVDB Entry

http://packetstormsecurity.com/files/165089/Apache-HTTP-Server-2.4.50-CVE-2021-42013-Exploitation.html

Third Party AdvisoryVDB Entry

http://packetstormsecurity.com/files/167397/Apache-2.4.50-Remote-Code-Execution.html

ExploitThird Party AdvisoryVDB Entry

http://www.openwall.com/lists/oss-security/2021/10/07/6

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/08/1

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/08/2

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/08/3

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/08/4

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/08/5

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/08/6

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/09/1

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/11/4

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/15/3

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/16/1

Mailing ListThird Party Advisory

https://httpd.apache.org/security/vulnerabilities_24.html

Release NotesVendor Advisory

https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb23392fc68264c72cb3%40%3Ccvs.httpd.apache.org%3E

Mailing ListPatch

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.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://security.gentoo.org/glsa/202208-20

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://www.oracle.com/security-alerts/cpuapr2022.html

PatchThird Party Advisory

https://www.oracle.com/security-alerts/cpujan2022.html

PatchThird Party Advisory

https://www.povilaika.com/apache-2-4-50-exploit/

ExploitThird Party Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42013

US Government Resource

Weaknesses

[email protected]

Secondary

CWE-22

[email protected]

Primary

CWE-22NVD-CWE-Other

CVSS impact metrics

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

9.8 · Critical

Information

Source identifier

[email protected]

Vulnerability status

Analyzed

Published

2021-10-07T14:15:09.270Z

4 years ago

Last modified

2025-10-27T16:36:49.387Z

4 months ago