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MS99-025 Microsoft IIS MDAC msadcs.dll RDS Arbitrary Remote Command Execution

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MS99-025 Microsoft IIS MDAC msadcs.dll RDS Arbitrary Remote Command Execution

Disclosed
07/17/1998
Created
05/30/2018

Description

This module can be used to execute arbitrary commands on IIS servers that expose the /msadc/msadcs.dll Microsoft Data Access Components (MDAC) Remote Data Service (RDS) DataFactory service using VbBusObj or AdvancedDataFactory to inject shell commands into Microsoft Access databases (MDBs), MSSQL databases and ODBC/JET Data Source Name (DSN). Based on the msadcs.pl v2 exploit by Rain.Forest.Puppy, which was actively used in the wild in the late Ninties. MDAC versions affected include MDAC 1.5, 2.0, 2.0 SDK, 2.1 and systems with the MDAC Sample Pages for RDS installed, and NT4 Servers with the NT Option Pack installed or upgraded 2000 systems often running IIS3/4/5 however some vulnerable installations can still be found on newer Windows operating systems. Note that newer releases of msadcs.dll can still be abused however by default remote connections to the RDS is denied. Consider using VERBOSE if you're unable to successfully execute a command, as the error messages are detailed and useful for debugging. Also set NAME to obtain the remote hostname, and METHOD to use the alternative VbBusObj technique.

Author(s)

  • aushack <patrick@osisecurity.com.au>

Platform

Windows

Development

References

Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':

msf > use exploit/windows/iis/msadc
msf exploit(msadc) > show targets
    ...targets...
msf exploit(msadc) > set TARGET < target-id >
msf exploit(msadc) > show options
    ...show and set options...
msf exploit(msadc) > exploit

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