Detections
Analytics
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
Plugin Details
Severity: Critical
ID: 101787
File Name: apache_2_2_34.nasl
Version: 1.13
Type: remote
Family: Web Servers
Published: 7/18/2017
Updated: 12/10/2025
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 5.9
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2017-7679
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: cpe:/a:apache:http_server, cpe:/a:apache:httpd
Required KB Items: installed_sw/Apache
Exploit Available: true
Exploit Ease: 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