Detections
Analytics

Apache 2.4.x < 2.4.35 Denial of Service

medium Web App Scanning Plugin ID 98916

Language:

Synopsis

Apache 2.4.x < 2.4.35 Denial of Service

Description

According to its banner, the version of Apache running on the remote host is 2.4.x prior to 2.4.35. By sending continuous SETTINGS frames of maximum size an ongoing HTTP/2 connection could be kept busy and would never time out. This can be abused for a DoS on the server. This only affect a server that has enabled the h2 protocol.

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

Solution

Upgrade to Apache version 2.4.35 or later.

See Also

https://archive.apache.org/dist/httpd/CHANGES_2.4.35

https://httpd.apache.org/security/vulnerabilities_24.html#2.4.35

Plugin Details

Severity: Medium

ID: 98916

Type: remote

Published: 1/31/2019

Updated: 3/14/2023

Scan Template: api, basic, full, pci, scan

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

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

CVSS Score Source: CVE-2018-11763

CVSS v3

Risk Factor: Medium

Base Score: 5.9

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

CVSS Score Source: CVE-2018-11763

Vulnerability Information

CPE: cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*

Exploit Ease: No known exploits are available

Patch Publication Date: 9/25/2018

Vulnerability Publication Date: 9/25/2018

Reference Information

CVE: CVE-2018-11763

BID: 105414