Apache 2.4.x < 2.4.38 Multiple Vulnerabilities

high Nessus Plugin ID 121355


The remote web server is affected by multiple vulnerabilities.


According to its banner, the version of Apache running on the remote host is 2.4.x prior to 2.4.38. It is, therefore, affected by multiple vulnerabilities:

- A denial of service (DoS) vulnerability exists in HTTP/2 steam handling. An unauthenticated, remote attacker can exploit this issue, via sending request bodies in a slow loris way to plain resources, to occupy a server thread. (CVE-2018-17189)

- A vulnerability exists in mod_sesion_cookie, as it does not properly check the expiry time of cookies. (CVE-2018-17199)

- A denial of service (DoS) vulnerability exists in mod_ssl when used with OpenSSL 1.1.1 due to an interaction in changes to handling of renegotiation attempts. An unauthenticated, remote attacker can exploit this issue to cause mod_ssl to stop responding. (CVE-2019-0190)

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


Upgrade to Apache version 2.4.38 or later.

See Also



Plugin Details

Severity: High

ID: 121355

File Name: apache_2_4_38.nasl

Version: 1.6

Type: combined

Agent: windows, macosx, unix

Family: Web Servers

Published: 1/24/2019

Updated: 4/11/2022

Configuration: Enable thorough checks

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

Risk Information


Risk Factor: Medium

Score: 5.1


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2018-17199


Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

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

Required KB Items: installed_sw/Apache

Exploit Ease: No known exploits are available

Patch Publication Date: 1/22/2019

Vulnerability Publication Date: 1/22/2019

Reference Information

CVE: CVE-2018-17189, CVE-2018-17199, CVE-2019-0190