CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
91.3%
The version of Apache httpd installed on the remote host is prior to 2.4.48. It is, therefore, affected by a vulnerability as referenced in the 2.4.48 changelog.
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(150244);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");
script_cve_id("CVE-2021-31618");
script_xref(name:"IAVA", value:"2021-A-0259-S");
script_name(english:"Apache 2.4.x < 2.4.48 Vulnerability");
script_set_attribute(attribute:"synopsis", value:
"The remote web server is affected by a vulnerability.");
script_set_attribute(attribute:"description", value:
"The version of Apache httpd installed on the remote host is prior to 2.4.48. It is, therefore, affected by a
vulnerability as referenced in the 2.4.48 changelog.
- mod_http2: Fix a potential NULL pointer dereference (CVE-2021-31618)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://downloads.apache.org/httpd/CHANGES_2.4");
script_set_attribute(attribute:"solution", value:
"Upgrade to Apache version 2.4.48 or later.");
script_set_attribute(attribute:"agent", value:"all");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-31618");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"vuln_publication_date", value:"2021/06/01");
script_set_attribute(attribute:"patch_publication_date", value:"2021/06/01");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/06/04");
script_set_attribute(attribute:"plugin_type", value:"combined");
script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:httpd");
script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:http_server");
script_set_attribute(attribute:"stig_severity", value:"I");
script_set_attribute(attribute:"thorough_tests", value:"true");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Web Servers");
script_copyright(english:"This script is Copyright (C) 2021-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("apache_http_version.nasl", "apache_http_server_nix_installed.nbin", "apache_httpd_win_installed.nbin");
script_require_keys("installed_sw/Apache");
exit(0);
}
include('vcf.inc');
include('vcf_extras.inc');
var app_info = vcf::apache_http_server::combined_get_app_info(app:'Apache');
var constraints = [
{ 'min_version' : '2.4.47', 'fixed_version' : '2.4.48', 'modules':['mod_http2'] }
];
vcf::apache_http_server::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
91.3%