CVE-2021-41773 Vulnerability Details

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CVE-2021-41773 Metadata Quick Info

CVE Published: 05/10/2021 | CVE Updated: 04/08/2024 | CVE Year: 2021
Source: apache | Vendor: Apache Software Foundation | Product: Apache HTTP Server
Status : PUBLISHED

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CVE-2021-41773 Description

A flaw was found in a change made to path normalization in Apache HTTP Server 2.4.49. 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 is known to be exploited in the wild. This issue only affects Apache 2.4.49 and not earlier versions. The fix in Apache HTTP Server 2.4.50 was found to be incomplete, see CVE-2021-42013.

Metrics

CVSS Version: 3.1 | Base Score: n/a
Vector: n/a

l➤ Exploitability Metrics:
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    Privileges Required (PR)*
    User Interaction (UI)*
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l➤ Impact Metrics:
    Confidentiality Impact (C)*
    Integrity Impact (I)*
    Availability Impact (A)*

Weakness Enumeration (CWE)

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

Common Attack Pattern Enumeration and Classification (CAPEC)

CAPEC-ID:
CAPEC Description:


Source: NVD (National Vulnerability Database).