5 Medium
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
7.5 High
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
7.3 High
AI Score
Confidence
High
0.01 Low
EPSS
Percentile
83.4%
A bug exists in the way mod_ssl handled client renegotiations. A remote
attacker could send a carefully crafted request that would cause mod_ssl to enter a loop leading to a denial of
service. This bug can be only triggered with Apache HTTP Server version 2.4.37 when using OpenSSL version 1.1.1 or
later, due to an interaction in changes to handling of renegotiation attempts.
# SPDX-FileCopyrightText: 2019 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only
CPE = "cpe:/a:apache:http_server";
if (description)
{
script_oid("1.3.6.1.4.1.25623.1.0.141961");
script_version("2024-02-15T05:05:40+0000");
script_tag(name:"last_modification", value:"2024-02-15 05:05:40 +0000 (Thu, 15 Feb 2024)");
script_tag(name:"creation_date", value:"2019-02-05 12:58:13 +0700 (Tue, 05 Feb 2019)");
script_tag(name:"cvss_base", value:"5.0");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2021-07-20 23:15:00 +0000 (Tue, 20 Jul 2021)");
script_cve_id("CVE-2019-0190");
script_tag(name:"qod_type", value:"remote_banner");
script_tag(name:"solution_type", value:"VendorFix");
script_name("Apache HTTP Server 2.4.37 mod_ssl DoS Vulnerability - Windows");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2019 Greenbone AG");
script_family("Web Servers");
script_dependencies("gb_apache_http_server_consolidation.nasl", "os_detection.nasl");
script_mandatory_keys("apache/http_server/detected", "Host/runs_windows");
script_tag(name:"summary", value:"A bug exists in the way mod_ssl handled client renegotiations. A remote
attacker could send a carefully crafted request that would cause mod_ssl to enter a loop leading to a denial of
service. This bug can be only triggered with Apache HTTP Server version 2.4.37 when using OpenSSL version 1.1.1 or
later, due to an interaction in changes to handling of renegotiation attempts.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"affected", value:"Apache HTTP Server version 2.4.37.");
script_tag(name:"solution", value:"Update to version 2.4.38 or later.");
script_xref(name:"URL", value:"https://httpd.apache.org/security/vulnerabilities_24.html");
exit(0);
}
include("host_details.inc");
include("version_func.inc");
if (isnull(port = get_app_port(cpe: CPE)))
exit(0);
if (!infos = get_app_version_and_location(cpe: CPE, port: port, exit_no_version: TRUE, version_regex: "^[0-9]+\.[0-9]+\.[0-9]+"))
exit(0);
version = infos["version"];
location = infos["location"];
if (version_is_equal(version: version, test_version: "2.4.37")) {
report = report_fixed_ver(installed_version: version, fixed_version: "2.4.38", install_path: location);
security_message(port: port, data: report);
exit(0);
}
exit(99);
5 Medium
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
7.5 High
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
7.3 High
AI Score
Confidence
High
0.01 Low
EPSS
Percentile
83.4%