CVE-2021-42013

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

9.8 /10

CVSS v3 : 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
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/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/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/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/2021/10/08/1 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/2021/10/08/3 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/2021/10/08/5 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/2021/10/09/1 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/2021/10/15/3 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://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/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 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
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/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/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/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/2021/10/08/1 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/2021/10/08/3 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/2021/10/08/5 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/2021/10/09/1 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/2021/10/15/3 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://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/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 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
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:-:*:*:*:*:*:*:*
History

21 Nov 2024, 06:27

Type Values Removed Values Added
References () http://jvn.jp/en/jp/JVN51106450/index.html - Third Party Advisory () http://jvn.jp/en/jp/JVN51106450/index.html - Third Party Advisory
References () 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
References () 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
References () 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
References () 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
References () 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
References () 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
References () 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
References () 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
References () 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
References () 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
References () 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
References () 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
References () 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
References () 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
References () 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
References () 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
References () 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
References () https://httpd.apache.org/security/vulnerabilities_24.html - Release Notes, Vendor Advisory () https://httpd.apache.org/security/vulnerabilities_24.html - Release Notes, Vendor Advisory
References () 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
References () 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
References () 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
References () 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
References () 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
References () https://security.gentoo.org/glsa/202208-20 - Third Party Advisory () https://security.gentoo.org/glsa/202208-20 - Third Party Advisory
References () https://security.netapp.com/advisory/ntap-20211029-0009/ - Third Party Advisory () https://security.netapp.com/advisory/ntap-20211029-0009/ - Third Party Advisory
References () 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
References () https://www.oracle.com/security-alerts/cpuapr2022.html - Patch, Third Party Advisory () https://www.oracle.com/security-alerts/cpuapr2022.html - Patch, Third Party Advisory
References () https://www.oracle.com/security-alerts/cpujan2022.html - Patch, Third Party Advisory () https://www.oracle.com/security-alerts/cpujan2022.html - Patch, Third Party Advisory
References () 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

26 Jul 2024, 19:39

Type Values Removed Values Added
References () https://httpd.apache.org/security/vulnerabilities_24.html - Vendor Advisory () https://httpd.apache.org/security/vulnerabilities_24.html - Release Notes, Vendor Advisory
References () https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb23392fc68264c72cb3%40%3Ccvs.httpd.apache.org%3E - () https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb23392fc68264c72cb3%40%3Ccvs.httpd.apache.org%3E - Mailing List, Patch
References () https://lists.apache.org/thread.html/r7c795cd45a3384d4d27e57618a215b0ed19cb6ca8eb070061ad5d837%40%3Cannounce.apache.org%3E - () https://lists.apache.org/thread.html/r7c795cd45a3384d4d27e57618a215b0ed19cb6ca8eb070061ad5d837%40%3Cannounce.apache.org%3E - Mailing List
References () https://lists.apache.org/thread.html/rb5b0e46f179f60b0c70204656bc52fcb558e961cb4d06a971e9e3efb%40%3Cusers.httpd.apache.org%3E - () https://lists.apache.org/thread.html/rb5b0e46f179f60b0c70204656bc52fcb558e961cb4d06a971e9e3efb%40%3Cusers.httpd.apache.org%3E - Mailing List
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RMIIEFINL6FUIOPD2A3M5XC6DH45Y3CC/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RMIIEFINL6FUIOPD2A3M5XC6DH45Y3CC/ - Release Notes
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WS5RVHOIIRECG65ZBTZY7IEJVWQSQPG3/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WS5RVHOIIRECG65ZBTZY7IEJVWQSQPG3/ - Release Notes

07 Nov 2023, 03:39

Type Values Removed Values Added
References
  • {'url': 'https://lists.apache.org/thread.html/rb5b0e46f179f60b0c70204656bc52fcb558e961cb4d06a971e9e3efb@%3Cusers.httpd.apache.org%3E', 'name': '[httpd-users] 20211007 [users@httpd] CVE-2021-42013: Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773)', 'tags': ['Mailing List'], 'refsource': 'MLIST'}
  • {'url': 'https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb23392fc68264c72cb3@%3Ccvs.httpd.apache.org%3E', 'name': '[httpd-cvs] 20211008 [httpd-site] branch main updated: * Align with CVE-2021-42013 based on the latest findings', 'tags': ['Mailing List', 'Vendor Advisory'], 'refsource': 'MLIST'}
  • {'url': 'https://lists.apache.org/thread.html/r7c795cd45a3384d4d27e57618a215b0ed19cb6ca8eb070061ad5d837@%3Cannounce.apache.org%3E', 'name': '[announce] 20211007 CVE-2021-42013: Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773)', 'tags': ['Mailing List'], 'refsource': 'MLIST'}
  • {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WS5RVHOIIRECG65ZBTZY7IEJVWQSQPG3/', 'name': 'FEDORA-2021-aaf90ef84a', 'tags': ['Mailing List'], 'refsource': 'FEDORA'}
  • {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RMIIEFINL6FUIOPD2A3M5XC6DH45Y3CC/', 'name': 'FEDORA-2021-2a10bc68a4', 'tags': ['Mailing List', 'Third Party Advisory'], 'refsource': 'FEDORA'}
  • () https://lists.apache.org/thread.html/rb5b0e46f179f60b0c70204656bc52fcb558e961cb4d06a971e9e3efb%40%3Cusers.httpd.apache.org%3E -
  • () https://lists.apache.org/thread.html/r7c795cd45a3384d4d27e57618a215b0ed19cb6ca8eb070061ad5d837%40%3Cannounce.apache.org%3E -
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WS5RVHOIIRECG65ZBTZY7IEJVWQSQPG3/ -
  • () https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb23392fc68264c72cb3%40%3Ccvs.httpd.apache.org%3E -
  • () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RMIIEFINL6FUIOPD2A3M5XC6DH45Y3CC/ -

31 Aug 2023, 16:13

Type Values Removed Values Added
CWE NVD-CWE-Other
References (MISC) http://packetstormsecurity.com/files/167397/Apache-2.4.50-Remote-Code-Execution.html - Exploit, Third Party Advisory (MISC) http://packetstormsecurity.com/files/167397/Apache-2.4.50-Remote-Code-Execution.html - Exploit, Third Party Advisory, VDB Entry
Information

Published : 2021-10-07 16:15

Updated : 2025-03-21 21:02

NVD link : CVE-2021-42013

Mitre link : CVE-2021-42013

CVE.ORG link : CVE-2021-42013

JSON object : View

Products Affected

fedoraproject

  • fedora

apache

  • http_server

netapp

  • cloud_backup

oracle

  • secure_backup
  • instantis_enterprisetrack
  • jd_edwards_enterpriseone_tools
CWE
CWE-22

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

NVD-CWE-Other