Apache 2.4.49 < 2.4.51 Path Traversal Vulnerability

critical Nessus Plugin ID 153952

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Synopsis

The remote web server is affected by a vulnerability.

Description

The version of Apache httpd installed on the remote host is 2.4.49 prior to 2.4.51. It is, therefore, affected by a vulnerability as referenced in the 2.4.51 advisory.

- 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.
(CVE-2021-42013)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Apache version 2.4.51 or later.

Plugin Details

Severity: Critical

ID: 153952

File Name: apache_2_4_51.nasl

Version: 1.13

Type: combined

Agent: windows, macosx, unix

Family: Web Servers

Published: 10/8/2021

Updated: 4/25/2023

Configuration: Enable thorough checks

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.0

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.2

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2021-42013

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:apache:http_server, cpe:/a:apache:httpd

Required KB Items: installed_sw/Apache

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/7/2021

Vulnerability Publication Date: 10/7/2021

CISA Known Exploited Vulnerability Due Dates: 11/17/2021

Exploitable With

CANVAS (CANVAS)

Metasploit (Apache 2.4.49/2.4.50 Traversal RCE)

Elliot (Apache 2.4.50 RCE)

Reference Information

CVE: CVE-2021-42013

Detections

Analytics