NT User Modification of RASMAN Binary Pathname

vendor:

Windows NT

by:

SecurityFocus

7.2

CVSS

HIGH

Privilege Escalation

264

CWE

Product Name: Windows NT

Affected Version From: N/A

Affected Version To: N/A

Patch Exists: NO

Related CWE: N/A

CPE: N/A

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Windows

2002

NT User Modification of RASMAN Binary Pathname

Any authenticated NT user can modify the pathname for the RASMAN binary in the Registry. The next time the RAS Service is started, the (trojan) service referenced by the RASMAN pathname will be executed with system privileges. This trojan service may allow the User to execute commands on the target server as an administrator, including elevating the privileges of their own account to that of Administrator. A modified (UNC) pathname may be used to point to an executable existing on another host on the network. 19502-1.exe is a binary pathname that will modify the RASMAN/ImagePath key in the Registry with the service executable to be run in its place. 19502-2.exe is a sample trojan service that may be run. This executable runs a service which launches a netcat listener on tcp port 123.

Mitigation:

Ensure that only trusted users have access to the system and that all users are assigned the least privileges necessary to perform their job.

Source

Exploit-DB raw data:

source: https://www.securityfocus.com/bid/645/info

Any authenticated NT user (ie domain user) can modify the pathname for the RASMAN binary in the Registry. The next time the RAS Service is started, the (trojan) service referenced by the RASMAN pathname will be executed with system privileges. This trojan service may allow the User to execute commands on the target server as an administrator, including elevating the privileges of their own account to that of Administrator. A modified (UNC) pathname may be used to point to an executable existing on another host on the network. 

19502-1.exe <binary pathname> will modify the RASMAN/ImagePath key in the Registry with the service executable to be run in its place. 19502-2.exe (author supplied) is a sample trojan service that may be run. This executable runs a service which launches a netcat listener on tcp port 123. (nc -d -L -p 123 -e cmd.exe). (This service may or may not run with errors.) 

https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/19502-1.exe

https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/19502-2.exe