The version of PHP installed on the remote host is prior to 8.2.9. It is, therefore, affected by multiple vulnerabilities as referenced in the Version 8.2.9 advisory.
In PHP versions 8.0.* before 8.0.30, 8.1.* before 8.1.22, and 8.2.* before 8.2.8 various XML functions rely on libxml global state to track configuration variables, like whether external entities are loaded.
This state is assumed to be unchanged unless the user explicitly changes it by calling appropriate function. However, since the state is process-global, other modules - such as ImageMagick - may also use this library within the same process, and change that global state for their internal purposes, and leave it in a state where external entities loading is enabled. This can lead to the situation where external XML is parsed with external entities loaded, which can lead to disclosure of any local files accessible to PHP. This vulnerable state may persist in the same process across many requests, until the process is shut down. (CVE-2023-3823)
In PHP version 8.0.* before 8.0.30, 8.1.* before 8.1.22, and 8.2.* before 8.2.8, when loading phar file, while reading PHAR directory entries, insufficient length checking may lead to a stack buffer overflow, leading potentially to memory corruption or RCE. (CVE-2023-3824)
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
include('compat.inc');
if (description)
{
script_id(179906);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/30");
script_cve_id("CVE-2023-3823", "CVE-2023-3824");
script_xref(name:"IAVA", value:"2023-A-0423");
script_name(english:"PHP 8.2.x < 8.2.9 Multiple Vulnerabilities");
script_set_attribute(attribute:"synopsis", value:
"The version PHP running on the remote web server is affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The version of PHP installed on the remote host is prior to 8.2.9. It is, therefore, affected by multiple
vulnerabilities as referenced in the Version 8.2.9 advisory.
- In PHP versions 8.0.* before 8.0.30, 8.1.* before 8.1.22, and 8.2.* before 8.2.8 various XML functions
rely on libxml global state to track configuration variables, like whether external entities are loaded.
This state is assumed to be unchanged unless the user explicitly changes it by calling appropriate
function. However, since the state is process-global, other modules - such as ImageMagick - may also use
this library within the same process, and change that global state for their internal purposes, and leave
it in a state where external entities loading is enabled. This can lead to the situation where external
XML is parsed with external entities loaded, which can lead to disclosure of any local files accessible to
PHP. This vulnerable state may persist in the same process across many requests, until the process is shut
down. (CVE-2023-3823)
- In PHP version 8.0.* before 8.0.30, 8.1.* before 8.1.22, and 8.2.* before 8.2.8, when loading phar file,
while reading PHAR directory entries, insufficient length checking may lead to a stack buffer overflow,
leading potentially to memory corruption or RCE. (CVE-2023-3824)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"http://php.net/ChangeLog-8.php#8.2.9");
script_set_attribute(attribute:"solution", value:
"Upgrade to PHP version 8.2.9 or later.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-3824");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2023/08/03");
script_set_attribute(attribute:"patch_publication_date", value:"2023/08/03");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/08/16");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/a:php:php");
script_set_attribute(attribute:"generated_plugin", value:"current");
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:"CGI abuses");
script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("php_version.nasl");
script_require_keys("www/PHP", "installed_sw/PHP");
script_require_ports("Services/www", 80);
exit(0);
}
include('vcf.inc');
include('http.inc');
var port = get_http_port(default:80, php:TRUE);
var app_info = vcf::get_app_info(app:'PHP', port:port, webapp:TRUE);
var backported = get_kb_item('www/php/' + port + '/' + app_info.version + '/backported');
if ((report_paranoia < 2) && backported)
audit(AUDIT_BACKPORT_SERVICE, port, 'PHP ' + app_info.version + ' install');
var constraints = [
{ 'min_version' : '8.2.0alpha1', 'fixed_version' : '8.2.9' }
];
vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);