Apache 2.4.x < 2.4.26 Multiple Vulnerabilities

critical Web Application Scanning Plugin ID 98911
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Synopsis

Apache 2.4.x < 2.4.26 Multiple Vulnerabilities

Description

According to its banner, the version of Apache running on the remote host is 2.4.x prior to 2.4.26. It is, therefore, affected by the following vulnerabilities :

- An authentication bypass vulnerability exists due to third-party modules using the ap_get_basic_auth_pw() function outside of the authentication phase. An unauthenticated, remote attacker can exploit this to bypass authentication requirements. (CVE-2017-3167)

- A NULL pointer dereference flaw exists due to third-party module calls to the mod_ssl ap_hook_process_connection() function during an HTTP request to an HTTPS port. An unauthenticated, remote attacker can exploit this to cause a denial of service condition. (CVE-2017-3169)

- A NULL pointer dereference flaw exists in mod_http2 that is triggered when handling a specially crafted HTTP/2 request. An unauthenticated, remote attacker can exploit this to cause a denial of service condition. Note that this vulnerability does not affect 2.2.x. (CVE-2017-7659)

- An out-of-bounds read error exists in the ap_find_token() function due to improper handling of header sequences. An unauthenticated, remote attacker can exploit this, via a specially crafted header sequence, to cause a denial of service condition. (CVE-2017-7668)

- An out-of-bounds read error exists in mod_mime due to improper handling of Content-Type response headers. An unauthenticated, remote attacker can exploit this, via a specially crafted Content-Type response header, to cause a denial of service condition or the disclosure of sensitive information. (CVE-2017-7679)

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 2.4.26 or later.

See Also

https://archive.apache.org/dist/httpd/CHANGES_2.4.26

https://httpd.apache.org/security/vulnerabilities_24.html#2.4.26

Plugin Details

Severity: Critical

ID: 98911

Type: remote

Published: 1/9/2019

Updated: 9/7/2021

Scan Template: api, scan, pci

Risk Information

CVSS v2

Risk Factor: High

Base Score: 7.5

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

CVSS v3

Risk Factor: Critical

Base Score: 9.8

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

Vulnerability Information

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/20/2017

Vulnerability Publication Date: 6/20/2017

Reference Information

CVE: CVE-2017-3167, CVE-2017-3169, CVE-2017-7659, CVE-2017-7668, CVE-2017-7679