Apache 2.2.x < 2.2.33-dev / 2.4.x < 2.4.26 Multiple Vulnerabilities

High Nessus Plugin ID 100995

Synopsis

The remote web server is affected by multiple vulnerabilities.

Description

According to its banner, the version of Apache running on the remote host is 2.2.x prior to 2.2.33-dev or 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 Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Apache version 2.2.33-dev / 2.4.26 or later.

See Also

https://archive.apache.org/dist/httpd/CHANGES_2.2.32

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

https://httpd.apache.org/security/vulnerabilities_22.html

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

Plugin Details

Severity: High

ID: 100995

File Name: apache_2_4_26.nasl

Version: 1.13

Type: remote

Family: Web Servers

Published: 2017/06/22

Updated: 2018/09/17

Dependencies: 48204

Risk Information

Risk Factor: High

CVSS Score Source: CVE-2017-7679

CVSS v2.0

Base Score: 7.5

Temporal Score: 5.5

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 7.3

Temporal Score: 6.4

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

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

Vulnerability Information

CPE: cpe:/a:apache:http_server

Required KB Items: installed_sw/Apache

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/06/19

Vulnerability Publication Date: 2017/06/19

Reference Information

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

BID: 99132, 99134, 99135, 99137, 99170