Apache 2.2.x < 2.2.34 Multiple Vulnerabilities

critical Nessus Plugin ID 101787
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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 2.2.34. It is, therefore, affected by the following vulnerabilities :

- An authentication bypass vulnerability exists in httpd 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 denial of service vulnerability exists in httpd due to a NULL pointer dereference flaw that is triggered when a third-party module calls 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 denial of service vulnerability exists in httpd due to an out-of-bounds read error in the ap_find_token() function that is triggered when handling a specially crafted request header sequence. An unauthenticated, remote attacker can exploit this to crash the service or force ap_find_token() to return an incorrect value. (CVE-2017-7668)

- A denial of service vulnerability exists in httpd due to an out-of-bounds read error in the mod_mime that is triggered when handling a specially crafted Content-Type response header. An unauthenticated, remote attacker can exploit this to disclose sensitive information or cause a denial of service condition. (CVE-2017-7679)

- A denial of service vulnerability exists in httpd due to a failure to initialize or reset the value placeholder in [Proxy-]Authorization headers of type 'Digest' before or between successive key=value assignments by mod_auth_digest. An unauthenticated, remote attacker can exploit this, by providing an initial key with no '=' assignment, to disclose sensitive information or cause a denial of service condition. (CVE-2017-9788)

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 2.2.34 or later.

See Also

https://archive.apache.org/dist/httpd/CHANGES_2.2.34

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

Plugin Details

Severity: Critical

ID: 101787

File Name: apache_2_2_34.nasl

Version: 1.12

Type: remote

Family: Web Servers

Published: 7/18/2017

Updated: 9/17/2018

Dependencies: apache_http_version.nasl

Risk Information

CVSS Score Source: CVE-2017-3167

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

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

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

Temporal Vector: 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: 7/11/2017

Vulnerability Publication Date: 7/11/2017

Reference Information

CVE: CVE-2017-3167, CVE-2017-3169, CVE-2017-7668, CVE-2017-7679, CVE-2017-9788

BID: 99134, 99135, 99137, 99170, 99569