Known Exploited Vulnerability
9.8
CRITICAL
CVE-2021-42013
Apache HTTP Server Path Traversal Vulnerability - [Actively Exploited]
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.

INFO

Published Date :

Oct. 7, 2021, 4:15 p.m.

Last Modified :

July 26, 2024, 7:39 p.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Description :

Apache HTTP Server contains a path traversal vulnerability that allows an attacker to perform remote code execution if files outside directories configured by Alias-like directives are not under default �require all denied� or if CGI scripts are enabled. This CVE ID resolves an incomplete patch for CVE-2021-41773.

Required Action :

Apply updates per vendor instructions.

Public PoC/Exploit Available at Github

CVE-2021-42013 has a 152 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-42013 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Oracle jd_edwards_enterpriseone_tools
2 Oracle secure_backup
3 Oracle instantis_enterprisetrack
1 Fedoraproject fedora
1 Netapp cloud_backup
1 Apache http_server
: Total Affected Vendor : 4 | Products : 6
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-42013.

URL 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

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
XiaomingX/awesome-poc-for-red-team

None

Updated: 1 week ago
0 stars 2 fork 2 watcher
Born at : Nov. 17, 2024, 11:53 a.m. This repo has been linked 414 different CVEs too.
Profile Photo
Faizan-Khanx/OSCP

This repository is designed to provide a comprehensive collection of study materials, notes, and resources for the Offensive Security Certified Professional (OSCP) exam. It covers all key topics from basic to advanced, helping aspiring penetration testers to prepare efficiently for the exam.

cybersecurity hacking oscp oscp-guide oscp-journey oscp-prep

Updated: 1 month, 2 weeks ago
1 stars 0 fork 0 watcher
Born at : Oct. 4, 2024, 4:43 p.m. This repo has been linked 75 different CVEs too.
Profile Photo
EnriqueSanchezdelVillar/NotesHck

None

Python C Shell PHP PowerShell ASP.NET

Updated: 1 month, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : Oct. 1, 2024, 2:21 p.m. This repo has been linked 66 different CVEs too.
Profile Photo
lucagioacchini/auto-pen-bench

This repo contains the codes of the penetration test benchmark for Generative Agents presented in the paper "AutoPenBench: Benchmarking Generative Agents for Penetration Testing". It contains also the instructions to install, develop and test new vulnerable containers to include in the benchmark.

benchmark generative-agents generative-ai penetration-testing

Python Shell Dockerfile C PHP Hack CSS HTML Ruby Groovy

Updated: 1 month, 2 weeks ago
4 stars 0 fork 0 watcher
Born at : Sept. 30, 2024, 3:13 p.m. This repo has been linked 11 different CVEs too.
Profile Photo
Davida-AduGyamfi/INPT

None

Updated: 2 months ago
0 stars 0 fork 0 watcher
Born at : Sept. 17, 2024, 7:33 p.m. This repo has been linked 6 different CVEs too.
Profile Photo
daffum3/internal-network-pentesting

None

Updated: 2 months ago
0 stars 0 fork 0 watcher
Born at : Sept. 16, 2024, 2:56 a.m. This repo has been linked 2 different CVEs too.
Profile Photo
Samue290/INPT-REPORT

None

Updated: 2 months ago
0 stars 0 fork 0 watcher
Born at : Sept. 16, 2024, 12:42 a.m. This repo has been linked 5 different CVEs too.
Profile Photo
Dorsaa-Francis/inpt_report

None

Updated: 2 months ago
0 stars 0 fork 0 watcher
Born at : Sept. 14, 2024, 2:58 p.m. This repo has been linked 5 different CVEs too.
Profile Photo
adugyeni/INPT_Report

None

Updated: 2 months, 1 week ago
0 stars 0 fork 0 watcher
Born at : Sept. 14, 2024, 11:18 a.m. This repo has been linked 5 different CVEs too.
Profile Photo
AhenKay/INPT_report

None

Updated: 2 months ago
1 stars 0 fork 0 watcher
Born at : Sept. 13, 2024, 3:40 p.m. This repo has been linked 5 different CVEs too.
Profile Photo
israelbarnabas/inpt-report

Israel Barnabas' report

Updated: 2 months ago
0 stars 1 fork 1 watcher
Born at : Sept. 12, 2024, 11:47 a.m. This repo has been linked 5 different CVEs too.
Profile Photo
Farrhouq/Inpt-report

Imoro Umar Farouq's report on Internal Network Penetration Testing

Shell

Updated: 2 months, 1 week ago
0 stars 0 fork 0 watcher
Born at : Sept. 12, 2024, 11:46 a.m. This repo has been linked 161 different CVEs too.
Profile Photo
Zyx2440/Apache-HTTP-Server-2.4.50-RCE

Apache-HTTP-Server-2.4.50-RCE This tool is designed to test Apache servers for the CVE-2021-41773 / CVE-2021-42013 vulnerability. It is intended for educational purposes only and should be used responsibly on systems you have explicit permission to test.

apache apache2 check-version cve-2021-41773 cve-2021-41773-poc cve-2021-42013 rce

Python

Updated: 2 months, 4 weeks ago
1 stars 0 fork 0 watcher
Born at : Aug. 26, 2024, 1:54 a.m. This repo has been linked 2 different CVEs too.
Profile Photo
amessedad/autoexploitGPT

New Version of Autoexploit - No MIT License

Python

Updated: 1 month, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : Aug. 19, 2024, 2:32 p.m. This repo has been linked 5 different CVEs too.
Profile Photo
bananoname/cve-2021-42013

None

Dockerfile Python PHP Shell

Updated: 3 months, 3 weeks ago
1 stars 0 fork 0 watcher
Born at : July 31, 2024, 7:48 a.m. This repo has been linked 1 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-42013 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-42013 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Modified Analysis by [email protected]

    Jul. 26, 2024

    Action Type Old Value New Value
    Changed Reference Type https://httpd.apache.org/security/vulnerabilities_24.html Vendor Advisory https://httpd.apache.org/security/vulnerabilities_24.html Release Notes, Vendor Advisory
    Changed Reference Type https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb23392fc68264c72cb3%40%3Ccvs.httpd.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb23392fc68264c72cb3%40%3Ccvs.httpd.apache.org%3E Mailing List, Patch
    Changed Reference Type https://lists.apache.org/thread.html/r7c795cd45a3384d4d27e57618a215b0ed19cb6ca8eb070061ad5d837%40%3Cannounce.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/r7c795cd45a3384d4d27e57618a215b0ed19cb6ca8eb070061ad5d837%40%3Cannounce.apache.org%3E Mailing List
    Changed Reference Type https://lists.apache.org/thread.html/rb5b0e46f179f60b0c70204656bc52fcb558e961cb4d06a971e9e3efb%40%3Cusers.httpd.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/rb5b0e46f179f60b0c70204656bc52fcb558e961cb4d06a971e9e3efb%40%3Cusers.httpd.apache.org%3E Mailing List
    Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RMIIEFINL6FUIOPD2A3M5XC6DH45Y3CC/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RMIIEFINL6FUIOPD2A3M5XC6DH45Y3CC/ Release Notes
    Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WS5RVHOIIRECG65ZBTZY7IEJVWQSQPG3/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WS5RVHOIIRECG65ZBTZY7IEJVWQSQPG3/ Release Notes
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Apache Software Foundation https://lists.apache.org/thread.html/r7c795cd45a3384d4d27e57618a215b0ed19cb6ca8eb070061ad5d837%40%3Cannounce.apache.org%3E [No types assigned]
    Added Reference Apache Software Foundation https://lists.apache.org/thread.html/rb5b0e46f179f60b0c70204656bc52fcb558e961cb4d06a971e9e3efb%40%3Cusers.httpd.apache.org%3E [No types assigned]
    Added Reference Apache Software Foundation https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb23392fc68264c72cb3%40%3Ccvs.httpd.apache.org%3E [No types assigned]
    Added Reference Apache Software Foundation https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RMIIEFINL6FUIOPD2A3M5XC6DH45Y3CC/ [No types assigned]
    Added Reference Apache Software Foundation https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WS5RVHOIIRECG65ZBTZY7IEJVWQSQPG3/ [No types assigned]
    Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/r7c795cd45a3384d4d27e57618a215b0ed19cb6ca8eb070061ad5d837@%3Cannounce.apache.org%3E
    Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/rb5b0e46f179f60b0c70204656bc52fcb558e961cb4d06a971e9e3efb@%3Cusers.httpd.apache.org%3E
    Removed Reference Apache Software Foundation https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb23392fc68264c72cb3@%3Ccvs.httpd.apache.org%3E
    Removed Reference Apache Software Foundation https://lists.fedoraproject.org/archives/list/[email protected]/message/RMIIEFINL6FUIOPD2A3M5XC6DH45Y3CC/
    Removed Reference Apache Software Foundation https://lists.fedoraproject.org/archives/list/[email protected]/message/WS5RVHOIIRECG65ZBTZY7IEJVWQSQPG3/
  • Reanalysis by [email protected]

    Aug. 31, 2023

    Action Type Old Value New Value
    Changed Reference Type http://packetstormsecurity.com/files/167397/Apache-2.4.50-Remote-Code-Execution.html Exploit, Third Party Advisory http://packetstormsecurity.com/files/167397/Apache-2.4.50-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry
    Added CWE NIST NVD-CWE-Other
  • Modified Analysis by [email protected]

    Oct. 05, 2022

    Action Type Old Value New Value
    Changed Reference Type http://packetstormsecurity.com/files/167397/Apache-2.4.50-Remote-Code-Execution.html No Types Assigned http://packetstormsecurity.com/files/167397/Apache-2.4.50-Remote-Code-Execution.html Exploit, Third Party Advisory
    Changed Reference Type https://security.gentoo.org/glsa/202208-20 No Types Assigned https://security.gentoo.org/glsa/202208-20 Third Party Advisory
    Changed Reference Type https://www.oracle.com/security-alerts/cpuapr2022.html No Types Assigned https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
    Changed Reference Type https://www.povilaika.com/apache-2-4-50-exploit/ No Types Assigned https://www.povilaika.com/apache-2-4-50-exploit/ Exploit, Third Party Advisory
    Changed CPE Configuration 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:secure_backup:*:*:*:*:*:*:*:* versions up to (excluding) 18.1.0.1.0 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:*:*:*:*:*:*:*:* versions up to (excluding) 9.2.6.0 *cpe:2.3:a:oracle:secure_backup:*:*:*:*:*:*:*:* versions up to (excluding) 18.1.0.1.0
  • CVE Modified by [email protected]

    Aug. 15, 2022

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/202208-20 [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 09, 2022

    Action Type Old Value New Value
    Added Reference https://www.povilaika.com/apache-2-4-50-exploit/ [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 06, 2022

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/167397/Apache-2.4.50-Remote-Code-Execution.html [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 20, 2022

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpuapr2022.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Mar. 25, 2022

    Action Type Old Value New Value
    Changed Reference Type https://www.oracle.com/security-alerts/cpujan2022.html No Types Assigned https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory
    Added CPE Configuration 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:secure_backup:*:*:*:*:*:*:*:* versions up to (excluding) 18.1.0.1.0
    Added CPE Configuration OR *cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Feb. 07, 2022

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpujan2022.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Nov. 30, 2021

    Action Type Old Value New Value
    Changed Reference Type http://packetstormsecurity.com/files/164941/Apache-HTTP-Server-2.4.50-Remote-Code-Execution.html No Types Assigned http://packetstormsecurity.com/files/164941/Apache-HTTP-Server-2.4.50-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry
    Changed Reference Type http://packetstormsecurity.com/files/165089/Apache-HTTP-Server-2.4.50-CVE-2021-42013-Exploitation.html No Types Assigned http://packetstormsecurity.com/files/165089/Apache-HTTP-Server-2.4.50-CVE-2021-42013-Exploitation.html Third Party Advisory, VDB Entry
  • CVE Modified by [email protected]

    Nov. 29, 2021

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/165089/Apache-HTTP-Server-2.4.50-CVE-2021-42013-Exploitation.html [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 11, 2021

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/164941/Apache-HTTP-Server-2.4.50-Remote-Code-Execution.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Nov. 04, 2021

    Action Type Old Value New Value
    Changed Reference Type http://packetstormsecurity.com/files/164501/Apache-HTTP-Server-2.4.50-Path-Traversal-Code-Execution.html Exploit, 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
    Changed Reference Type http://packetstormsecurity.com/files/164609/Apache-HTTP-Server-2.4.50-Remote-Code-Execution.html No Types Assigned http://packetstormsecurity.com/files/164609/Apache-HTTP-Server-2.4.50-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry
    Changed Reference Type http://packetstormsecurity.com/files/164629/Apache-2.4.49-2.4.50-Traversal-Remote-Code-Execution.html No Types Assigned http://packetstormsecurity.com/files/164629/Apache-2.4.49-2.4.50-Traversal-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry
    Changed Reference Type http://www.openwall.com/lists/oss-security/2021/10/15/3 No Types Assigned http://www.openwall.com/lists/oss-security/2021/10/15/3 Mailing List, Third Party Advisory
    Changed Reference Type http://www.openwall.com/lists/oss-security/2021/10/16/1 No Types Assigned http://www.openwall.com/lists/oss-security/2021/10/16/1 Mailing List, Third Party Advisory
    Changed Reference Type https://security.netapp.com/advisory/ntap-20211029-0009/ No Types Assigned https://security.netapp.com/advisory/ntap-20211029-0009/ Third Party Advisory
  • CVE Modified by [email protected]

    Oct. 29, 2021

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20211029-0009/ [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 25, 2021

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/164609/Apache-HTTP-Server-2.4.50-Remote-Code-Execution.html [No Types Assigned]
    Added Reference http://packetstormsecurity.com/files/164629/Apache-2.4.49-2.4.50-Traversal-Remote-Code-Execution.html [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 16, 2021

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2021/10/16/1 [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 15, 2021

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2021/10/15/3 [No Types Assigned]
  • Initial Analysis by [email protected]

    Oct. 15, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://jvn.jp/en/jp/JVN51106450/index.html No Types Assigned http://jvn.jp/en/jp/JVN51106450/index.html Third Party Advisory
    Changed Reference Type http://packetstormsecurity.com/files/164501/Apache-HTTP-Server-2.4.50-Path-Traversal-Code-Execution.html No Types Assigned http://packetstormsecurity.com/files/164501/Apache-HTTP-Server-2.4.50-Path-Traversal-Code-Execution.html Exploit, Third Party Advisory
    Changed Reference Type http://www.openwall.com/lists/oss-security/2021/10/07/6 No Types Assigned http://www.openwall.com/lists/oss-security/2021/10/07/6 Mailing List, Third Party Advisory
    Changed Reference Type http://www.openwall.com/lists/oss-security/2021/10/08/1 No Types Assigned http://www.openwall.com/lists/oss-security/2021/10/08/1 Mailing List, Third Party Advisory
    Changed Reference Type http://www.openwall.com/lists/oss-security/2021/10/08/2 No Types Assigned http://www.openwall.com/lists/oss-security/2021/10/08/2 Mailing List, Third Party Advisory
    Changed Reference Type http://www.openwall.com/lists/oss-security/2021/10/08/3 No Types Assigned http://www.openwall.com/lists/oss-security/2021/10/08/3 Mailing List, Third Party Advisory
    Changed Reference Type http://www.openwall.com/lists/oss-security/2021/10/08/4 No Types Assigned http://www.openwall.com/lists/oss-security/2021/10/08/4 Mailing List, Third Party Advisory
    Changed Reference Type http://www.openwall.com/lists/oss-security/2021/10/08/5 No Types Assigned http://www.openwall.com/lists/oss-security/2021/10/08/5 Mailing List, Third Party Advisory
    Changed Reference Type http://www.openwall.com/lists/oss-security/2021/10/08/6 No Types Assigned http://www.openwall.com/lists/oss-security/2021/10/08/6 Mailing List, Third Party Advisory
    Changed Reference Type http://www.openwall.com/lists/oss-security/2021/10/09/1 No Types Assigned http://www.openwall.com/lists/oss-security/2021/10/09/1 Mailing List, Third Party Advisory
    Changed Reference Type http://www.openwall.com/lists/oss-security/2021/10/11/4 No Types Assigned http://www.openwall.com/lists/oss-security/2021/10/11/4 Mailing List, Third Party Advisory
    Changed Reference Type https://httpd.apache.org/security/vulnerabilities_24.html No Types Assigned https://httpd.apache.org/security/vulnerabilities_24.html Vendor Advisory
    Changed Reference Type https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb23392fc68264c72cb3@%3Ccvs.httpd.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb23392fc68264c72cb3@%3Ccvs.httpd.apache.org%3E Mailing List, Vendor Advisory
    Changed Reference Type https://lists.apache.org/thread.html/r7c795cd45a3384d4d27e57618a215b0ed19cb6ca8eb070061ad5d837@%3Cannounce.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/r7c795cd45a3384d4d27e57618a215b0ed19cb6ca8eb070061ad5d837@%3Cannounce.apache.org%3E Mailing List
    Changed Reference Type https://lists.apache.org/thread.html/rb5b0e46f179f60b0c70204656bc52fcb558e961cb4d06a971e9e3efb@%3Cusers.httpd.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/rb5b0e46f179f60b0c70204656bc52fcb558e961cb4d06a971e9e3efb@%3Cusers.httpd.apache.org%3E Mailing List
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/RMIIEFINL6FUIOPD2A3M5XC6DH45Y3CC/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/RMIIEFINL6FUIOPD2A3M5XC6DH45Y3CC/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/WS5RVHOIIRECG65ZBTZY7IEJVWQSQPG3/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/WS5RVHOIIRECG65ZBTZY7IEJVWQSQPG3/ Mailing List
    Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-pathtrv-LAzg68cZ No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-pathtrv-LAzg68cZ Third Party Advisory
    Added CWE NIST CWE-22
    Added CPE Configuration OR *cpe:2.3:a:apache:http_server:2.4.49:*:*:*:*:*:*:* *cpe:2.3:a:apache:http_server:2.4.50:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Oct. 15, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/WS5RVHOIIRECG65ZBTZY7IEJVWQSQPG3/ [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 13, 2021

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/164501/Apache-HTTP-Server-2.4.50-Path-Traversal-Code-Execution.html [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 13, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/RMIIEFINL6FUIOPD2A3M5XC6DH45Y3CC/ [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 11, 2021

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2021/10/11/4 [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 09, 2021

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2021/10/08/6 [No Types Assigned]
    Added Reference http://www.openwall.com/lists/oss-security/2021/10/08/5 [No Types Assigned]
    Added Reference http://www.openwall.com/lists/oss-security/2021/10/09/1 [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 09, 2021

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2021/10/08/4 [No Types Assigned]
    Added Reference http://www.openwall.com/lists/oss-security/2021/10/08/3 [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 08, 2021

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2021/10/08/2 [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 08, 2021

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb23392fc68264c72cb3@%3Ccvs.httpd.apache.org%3E [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 08, 2021

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2021/10/08/1 [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 08, 2021

    Action Type Old Value New Value
    Added Reference http://jvn.jp/en/jp/JVN51106450/index.html [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 07, 2021

    Action Type Old Value New Value
    Added Reference https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-pathtrv-LAzg68cZ [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 07, 2021

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2021/10/07/6 [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 07, 2021

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/r7c795cd45a3384d4d27e57618a215b0ed19cb6ca8eb070061ad5d837@%3Cannounce.apache.org%3E [No Types Assigned]
    Added Reference https://lists.apache.org/thread.html/rb5b0e46f179f60b0c70204656bc52fcb558e961cb4d06a971e9e3efb@%3Cusers.httpd.apache.org%3E [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-42013 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-42013 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

97.24 }} -0.04%

score

0.99878

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: