5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
0.017 Low
EPSS
Percentile
87.8%
The remote install of Guestbook tr3.a fails to restrict access to its password file. An unauthenticated, remote attacker can leverage this issue to gain control of the affected application.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# Ref:
# Message-ID: <[email protected]>
# From: subj <[email protected]>
# To: [email protected]
# Subject: Guestbook tr3.a
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(11436);
script_version("1.30");
script_set_attribute(attribute:"plugin_modification_date", value:"2022/04/11");
script_cve_id("CVE-2003-1541");
script_bugtraq_id(7167);
script_xref(name:"SECUNIA", value:"8392");
script_name(english:"Guestbook tr3.a Password Disclosure");
script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a CGI application that is affected by
an information disclosure vulnerability.");
script_set_attribute(attribute:"description", value:
"The remote install of Guestbook tr3.a fails to restrict access to its
password file. An unauthenticated, remote attacker can leverage this
issue to gain control of the affected application.");
# https://www.securityfocus.com/archive/1/archive/1/315895/30/25400/threaded
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?cf3868f2");
script_set_attribute(attribute:"solution", value:
"Unknown at this time.");
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:U/RC:ND");
script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploited_by_nessus", value:"true");
script_cwe_id(264);
script_set_attribute(attribute:"plugin_publication_date", value:"2003/03/22");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"thorough_tests", value:"true");
script_end_attributes();
script_category(ACT_ATTACK);
script_family(english:"CGI abuses");
script_copyright(english:"This script is Copyright (C) 2003-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("http_version.nasl", "find_service1.nasl", "no404.nasl");
script_require_keys("www/PHP");
script_exclude_keys("Settings/disable_cgi_scanning");
script_require_ports("Services/www", 80);
exit(0);
}
#
# The script code starts here
#
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("data_protection.inc");
port = get_http_port(default:80);
if (!can_host_php(port:port)) exit(0, "The web server on port "+port+" does not support PHP");
# Loop through directories.
if (thorough_tests) dirs = list_uniq(make_list("/guestbook", cgi_dirs()));
else dirs = make_list(cgi_dirs());
foreach dir (dirs)
{
# Make sure we're looking at Guestbook tr3.a.
url = string(dir, "/guestbook.php");
w = http_send_recv3(method:"GET", item:url, port:port);
if (isnull(w)) exit(1, "the web server on port "+port+" did non answer");
res = w[2];
# If so...
if (
"PHP script by Bernd Moon" >< res ||
">Find all message here" >< res
)
{
# Try the exploit.
url2 = string(dir, "/files/passwd.txt");
w = http_send_recv3(method:"GET", item:url2, port:port);
if (isnull(w)) exit(1, "the web on port "+port+" did not answer");
res2 = w[2];
# There's a problem if we get something.
if (strlen(res2))
{
if (report_verbosity)
{
report = string(
"\n",
"Nessus was able to exploit the issue to retrieve the contents of\n",
"the application's password file using the following URL :\n",
"\n",
" ", build_url(port:port, qs:url2), "\n"
);
if (report_verbosity > 1)
{
res2 = data_protection::sanitize_user_full_redaction(output:res2);
report += string(
"\n",
"Here are the contents :\n",
"\n",
" ", str_replace(find:'\n', replace:'\n ', string:res2), "\n"
);
}
security_hole(port:port, extra:report);
}
else security_hole(port);
exit(0);
}
}
}