CVE-2021-42013

KEV
Published: Ott 07, 2021 Last Modified: Ott 27, 2025
ExploitDB:
Other exploit source:
Google Dorks:
CRITICAL 9,8
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
HIGH 7,5
Source: [email protected]
Access Vector: network
Access Complexity: low
Authentication: none
Confidentiality: partial
Integrity: partial
Availability: partial

Description

AI Translation Available

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.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,9441
Percentile
1,0th
Updated

EPSS Score Trend (Last 90 Days)

22

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

Stable
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Confidentiality Availability
Potential Impacts:
Execute Unauthorized Code Or Commands Modify Files Or Directories Read Files Or Directories Dos: Crash, Exit, Or Restart
Applicable Platforms
Technologies: AI/ML
Likelihood of Exploit: High
View CWE Details
Exploit

Apache HTTP Server 2.4.50 - Path Traversal & …

Verified

Apache HTTP Server 2.4.50 - Path Traversal & Remote Code Execution (RCE)

Author: Lucas Souza Published: Status: Verified
View Exploit Code →
Exploit

Apache HTTP Server 2.4.50 - Remote Code Execution …

Apache HTTP Server 2.4.50 - Remote Code Execution (RCE) (2)

Author: ThelastVvV Published:
View Exploit Code →
Exploit

Apache HTTP Server 2.4.50 - Remote Code Execution …

Verified

Apache HTTP Server 2.4.50 - Remote Code Execution (RCE) (3)

Author: Valentin Lobstein Published: Status: Verified
View Exploit Code →
Application

Cloud Backup by Netapp

Product Information
Vendor Netapp
Product Cloud Backup
Version -
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Instantis Enterprisetrack by Oracle

Product Information
Vendor Oracle
Product Instantis Enterprisetrack
Version 17.3
cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Fedora by Fedoraproject

Product Information
Vendor Fedoraproject
Product Fedora
Version 35
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Instantis Enterprisetrack by Oracle

Product Information
Vendor Oracle
Product Instantis Enterprisetrack
Version 17.1
cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Jd Edwards Enterpriseone Tools by Oracle

Product Information
Vendor Oracle
Product Jd Edwards Enterpriseone Tools
Version Range Affected
To 9.2.6.0 (exclusive)
cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Fedora by Fedoraproject

Product Information
Vendor Fedoraproject
Product Fedora
Version 34
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Http Server by Apache

Product Information
Vendor Apache
Product Http Server
Version 2.4.49
cpe:2.3:a:apache:http_server:2.4.49:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Instantis Enterprisetrack by Oracle

Product Information
Vendor Oracle
Product Instantis Enterprisetrack
Version 17.2
cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Secure Backup by Oracle

Product Information
Vendor Oracle
Product Secure Backup
Version Range Affected
To 18.1.0.1.0 (exclusive)
cpe:2.3:a:oracle:secure_backup:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Http Server by Apache

Product Information
Vendor Apache
Product Http Server
Version 2.4.50
cpe:2.3:a:apache:http_server:2.4.50:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://www.cisa.gov/known-exploited-vulnerabilities-catalo…
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021…
http://jvn.jp/en/jp/JVN51106450/index.html
http://jvn.jp/en/jp/JVN51106450/index.html
http://packetstormsecurity.com/files/164501/Apache-HTTP-Ser…
http://packetstormsecurity.com/files/164501/Apache-HTTP-Server-2.4.50-Path-Trav…
http://packetstormsecurity.com/files/164609/Apache-HTTP-Ser…
http://packetstormsecurity.com/files/164609/Apache-HTTP-Server-2.4.50-Remote-Co…
http://packetstormsecurity.com/files/164629/Apache-2.4.49-2…
http://packetstormsecurity.com/files/164629/Apache-2.4.49-2.4.50-Traversal-Remo…
http://packetstormsecurity.com/files/164941/Apache-HTTP-Ser…
http://packetstormsecurity.com/files/164941/Apache-HTTP-Server-2.4.50-Remote-Co…
http://packetstormsecurity.com/files/165089/Apache-HTTP-Ser…
http://packetstormsecurity.com/files/165089/Apache-HTTP-Server-2.4.50-CVE-2021-…
http://packetstormsecurity.com/files/167397/Apache-2.4.50-R…
http://packetstormsecurity.com/files/167397/Apache-2.4.50-Remote-Code-Execution…
https://httpd.apache.org/security/vulnerabilities_24.html
https://httpd.apache.org/security/vulnerabilities_24.html
https://lists.apache.org/thread.html/r17a4c6ce9aff662efd945…
https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb233…
https://lists.apache.org/thread.html/r7c795cd45a3384d4d27e5…
https://lists.apache.org/thread.html/r7c795cd45a3384d4d27e57618a215b0ed19cb6ca8…
https://lists.apache.org/thread.html/rb5b0e46f179f60b0c7020…
https://lists.apache.org/thread.html/rb5b0e46f179f60b0c70204656bc52fcb558e961cb…
https://lists.fedoraproject.org/archives/list/package-annou…
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapr…
https://lists.fedoraproject.org/archives/list/package-annou…
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapr…
https://security.gentoo.org/glsa/202208-20
https://security.gentoo.org/glsa/202208-20
https://security.netapp.com/advisory/ntap-20211029-0009/
https://security.netapp.com/advisory/ntap-20211029-0009/
https://tools.cisco.com/security/center/content/CiscoSecuri…
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-…
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.oracle.com/security-alerts/cpujan2022.html
https://www.oracle.com/security-alerts/cpujan2022.html
https://www.povilaika.com/apache-2-4-50-exploit/
https://www.povilaika.com/apache-2-4-50-exploit/
http://www.openwall.com/lists/oss-security/2021/10/07/6
http://www.openwall.com/lists/oss-security/2021/10/07/6
http://www.openwall.com/lists/oss-security/2021/10/08/1
http://www.openwall.com/lists/oss-security/2021/10/08/1
http://www.openwall.com/lists/oss-security/2021/10/08/2
http://www.openwall.com/lists/oss-security/2021/10/08/2
http://www.openwall.com/lists/oss-security/2021/10/08/3
http://www.openwall.com/lists/oss-security/2021/10/08/3
http://www.openwall.com/lists/oss-security/2021/10/08/4
http://www.openwall.com/lists/oss-security/2021/10/08/4
http://www.openwall.com/lists/oss-security/2021/10/08/5
http://www.openwall.com/lists/oss-security/2021/10/08/5
http://www.openwall.com/lists/oss-security/2021/10/08/6
http://www.openwall.com/lists/oss-security/2021/10/08/6
http://www.openwall.com/lists/oss-security/2021/10/09/1
http://www.openwall.com/lists/oss-security/2021/10/09/1
http://www.openwall.com/lists/oss-security/2021/10/11/4
http://www.openwall.com/lists/oss-security/2021/10/11/4
http://www.openwall.com/lists/oss-security/2021/10/15/3
http://www.openwall.com/lists/oss-security/2021/10/15/3
http://www.openwall.com/lists/oss-security/2021/10/16/1
http://www.openwall.com/lists/oss-security/2021/10/16/1
http://jvn.jp/en/jp/JVN51106450/index.html
http://jvn.jp/en/jp/JVN51106450/index.html
http://packetstormsecurity.com/files/164501/Apache-HTTP-Ser…
http://packetstormsecurity.com/files/164501/Apache-HTTP-Server-2.4.50-Path-Trav…
http://packetstormsecurity.com/files/164609/Apache-HTTP-Ser…
http://packetstormsecurity.com/files/164609/Apache-HTTP-Server-2.4.50-Remote-Co…
http://packetstormsecurity.com/files/164629/Apache-2.4.49-2…
http://packetstormsecurity.com/files/164629/Apache-2.4.49-2.4.50-Traversal-Remo…
http://packetstormsecurity.com/files/164941/Apache-HTTP-Ser…
http://packetstormsecurity.com/files/164941/Apache-HTTP-Server-2.4.50-Remote-Co…
http://packetstormsecurity.com/files/165089/Apache-HTTP-Ser…
http://packetstormsecurity.com/files/165089/Apache-HTTP-Server-2.4.50-CVE-2021-…
http://packetstormsecurity.com/files/167397/Apache-2.4.50-R…
http://packetstormsecurity.com/files/167397/Apache-2.4.50-Remote-Code-Execution…
https://httpd.apache.org/security/vulnerabilities_24.html
https://httpd.apache.org/security/vulnerabilities_24.html
https://lists.apache.org/thread.html/r17a4c6ce9aff662efd945…
https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb233…
https://lists.apache.org/thread.html/r7c795cd45a3384d4d27e5…
https://lists.apache.org/thread.html/r7c795cd45a3384d4d27e57618a215b0ed19cb6ca8…
https://lists.apache.org/thread.html/rb5b0e46f179f60b0c7020…
https://lists.apache.org/thread.html/rb5b0e46f179f60b0c70204656bc52fcb558e961cb…
https://lists.fedoraproject.org/archives/list/package-annou…
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapr…
https://lists.fedoraproject.org/archives/list/package-annou…
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapr…
https://security.gentoo.org/glsa/202208-20
https://security.gentoo.org/glsa/202208-20
https://security.netapp.com/advisory/ntap-20211029-0009/
https://security.netapp.com/advisory/ntap-20211029-0009/
https://tools.cisco.com/security/center/content/CiscoSecuri…
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-…
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.oracle.com/security-alerts/cpujan2022.html
https://www.oracle.com/security-alerts/cpujan2022.html
https://www.povilaika.com/apache-2-4-50-exploit/
https://www.povilaika.com/apache-2-4-50-exploit/
http://www.openwall.com/lists/oss-security/2021/10/07/6
http://www.openwall.com/lists/oss-security/2021/10/07/6
http://www.openwall.com/lists/oss-security/2021/10/08/1
http://www.openwall.com/lists/oss-security/2021/10/08/1
http://www.openwall.com/lists/oss-security/2021/10/08/2
http://www.openwall.com/lists/oss-security/2021/10/08/2
http://www.openwall.com/lists/oss-security/2021/10/08/3
http://www.openwall.com/lists/oss-security/2021/10/08/3
http://www.openwall.com/lists/oss-security/2021/10/08/4
http://www.openwall.com/lists/oss-security/2021/10/08/4
http://www.openwall.com/lists/oss-security/2021/10/08/5
http://www.openwall.com/lists/oss-security/2021/10/08/5
http://www.openwall.com/lists/oss-security/2021/10/08/6
http://www.openwall.com/lists/oss-security/2021/10/08/6
http://www.openwall.com/lists/oss-security/2021/10/09/1
http://www.openwall.com/lists/oss-security/2021/10/09/1
http://www.openwall.com/lists/oss-security/2021/10/11/4
http://www.openwall.com/lists/oss-security/2021/10/11/4
http://www.openwall.com/lists/oss-security/2021/10/15/3
http://www.openwall.com/lists/oss-security/2021/10/15/3
http://www.openwall.com/lists/oss-security/2021/10/16/1
http://www.openwall.com/lists/oss-security/2021/10/16/1