CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:S/C:N/I:N/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
78.2%
PHP is prone to a denial of service (DoS) vulnerability.
# SPDX-FileCopyrightText: 2018 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:php:php";
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.812520");
script_version("2024-02-15T05:05:40+0000");
script_cve_id("CVE-2015-9253");
script_tag(name:"cvss_base", value:"6.8");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:N/I:N/A:C");
script_tag(name:"last_modification", value:"2024-02-15 05:05:40 +0000 (Thu, 15 Feb 2024)");
script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2020-02-19 00:15:00 +0000 (Wed, 19 Feb 2020)");
script_tag(name:"creation_date", value:"2018-02-20 18:02:59 +0530 (Tue, 20 Feb 2018)");
script_name("PHP 'PHP-FPM' Denial of Service Vulnerability - Linux");
script_copyright("Copyright (C) 2018 Greenbone AG");
script_category(ACT_GATHER_INFO);
script_family("Web application abuses");
script_dependencies("gb_php_ssh_login_detect.nasl", "gb_php_http_detect.nasl", "os_detection.nasl");
script_mandatory_keys("php/detected", "Host/runs_unixoide");
script_xref(name:"URL", value:"https://bugs.php.net/bug.php?id=73342");
script_xref(name:"URL", value:"https://bugs.php.net/bug.php?id=70185");
script_xref(name:"URL", value:"https://github.com/php/php-src/pull/3287");
script_xref(name:"URL", value:"https://www.futureweb.at/security/CVE-2015-9253");
script_tag(name:"summary", value:"PHP is prone to a denial of service (DoS) vulnerability.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"The flaw exists due to the php-fpm master
process restarts a child process in an endless loop when using program
execution functions with a non-blocking STDIN stream.");
script_tag(name:"impact", value:"Successfully exploitation will allow an
attacker to consume 100% of the CPU, and consume disk space with a large
volume of error logs, as demonstrated by an attack by a customer of a
shared-hosting facility.");
script_tag(name:"affected", value:"PHP versions 5.x up to and including 5.6.36. All 7.0.x versions,
7.1.x before 7.1.20, 7.2.x before 7.2.8 and 7.3.x before 7.3.0alpha3 on Windows.");
script_tag(name:"solution", value:"Update to PHP 7.1.20, 7.2.8 or 7.3.0alpha3.");
script_tag(name:"solution_type", value:"VendorFix");
script_tag(name:"qod_type", value:"remote_banner_unreliable");
exit(0);
}
include("version_func.inc");
include("host_details.inc");
if(isnull(phpPort = get_app_port(cpe:CPE))) exit(0);
if(!infos = get_app_version_and_location(cpe:CPE, port:phpPort, exit_no_version:TRUE)) exit(0);
phpVers = infos['version'];
path = infos['location'];
# nb: Fix is only shipped / released in the branches 7.1.x and up and fixed starting with 7.1.20.
if(version_in_range(version:phpVers, test_version:"5.0", test_version2:"7.1.19")){
fix = "7.1.20";
} else if(phpVers =~ "^7\.2\." && version_is_less(version:phpVers, test_version:"7.2.8")){
fix = "7.2.8";
} else if(phpVers =~ "^7\.3\." && version_is_less(version:phpVers, test_version:"7.3.0alpha3")){
fix = "7.3.0alpha3";
}
if(fix){
report = report_fixed_ver(installed_version:phpVers, fixed_version:fix, install_path:path);
security_message(port:phpPort, data:report);
exit(0);
}
exit(99);
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:S/C:N/I:N/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
78.2%