Apache 2.4.x < 2.4.46 Multiple Vulnerabilities

critical Nessus Plugin ID 139574
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Synopsis

The remote web server is affected by multiple vulnerabilities.

Description

The version of Apache httpd installed on the remote host is prior to 2.4.46. It is, therefore, affected by multiple vulnerabilities as referenced in the 2.4.46 advisory.

- Apache HTTP server 2.4.32 to 2.4.44 mod_proxy_uwsgi info disclosure and possible RCE (CVE-2020-11984)

- Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above info will mitigate this vulnerability for unpatched servers. (CVE-2020-11993)

- Apache HTTP Server versions 2.4.20 to 2.4.43. A specially crafted value for the 'Cache-Digest' header in a HTTP/2 request would result in a crash when the server actually tries to HTTP/2 PUSH a resource afterwards.
Configuring the HTTP/2 feature via H2Push off will mitigate this vulnerability for unpatched servers.
(CVE-2020-9490)

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 2.4.46 or later.

Plugin Details

Severity: Critical

ID: 139574

File Name: apache_2_4_46.nasl

Version: 1.11

Type: combined

Agent: windows, macosx, unix

Family: Web Servers

Published: 8/13/2020

Updated: 6/4/2021

Dependencies: apache_http_version.nasl, apache_http_server_nix_installed.nbin, apache_httpd_win_installed.nbin

Risk Information

CVSS Score Source: CVE-2020-11984

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

Temporal Vector: E:POC/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

Temporal Vector: E:P/RL:O/RC:C

Vulnerability Information

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

Required KB Items: installed_sw/Apache

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/7/2020

Vulnerability Publication Date: 8/7/2020

Reference Information

CVE: CVE-2020-9490, CVE-2020-11984, CVE-2020-11993

IAVA: 2020-A-0376-S