Detections
Analytics
Apache 2.4.x < 2.4.27 Multiple Vulnerabilities
critical Nessus Plugin ID 101788
Language:
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 2.4.x prior to 2.4.27. It is, therefore, affected by the following vulnerabilities :- 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)
- A read-after-free error exists in httpd that is triggered when closing a large number of connections. An unauthenticated, remote attacker can exploit this to have an unspecified impact. (CVE-2017-9789)
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 2.4.27 or later.See Also
Plugin Details
Severity: Critical
ID: 101788
File Name: apache_2_4_27.nasl
Version: 1.15
Type: combined
Agent: windows, macosx, unix
Family: Web Servers
Published: 7/18/2017
Updated: 4/11/2022
Configuration: Enable thorough checks
Supported Sensors: Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.0
CVSS v2
Risk Factor: Medium
Base Score: 6.4
Temporal Score: 4.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:P
CVSS Score Source: CVE-2017-9788
CVSS v3
Risk Factor: Critical
Base Score: 9.1
Temporal Score: 7.9
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Temporal Vector: CVSS:3.0/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-2017-9788, CVE-2017-9789