Re: New module: tpe

From: D Lambrou (dlambrouat_private)
Date: Wed May 14 2003 - 12:29:09 PDT

  • Next message: James Morris: "Re: New module: tpe"

    Quoting Chris Wright <chrisat_private>:
    
    > * dlambrouat_private (dlambrouat_private) wrote:
    > > Just a quick question on the following rule:
    > > 2. Trusted user, untrusted path  =  User is able to run the executable
    > > 
    > > 1. Untrusted path contains untrusted code
    > > 2. Trusted user has higher priviledges than untrusted
    > > 3. Finally an untrusted user places an untrusted 
    > > file into an untrusted path, 
    > > and what you get is an untrusted application (Trojan) to be executed by a
    > > trusted user!  
    > 
    > IIRC trusted user in this case essentially means can run arbitrary
    > (potentially untrusted) code.
    
    If thats the definition then rule 2 makes sense
    
    Thanks 
    
    
    > IOW, the trusted user list should have
    > no users in it by default, and is a mechanism to selectively turn off
    > TPE.  I'll have to go back and read about the older implementations
    > though.
    
    > 
    > thanks,
    > -chris
    > -- 
    > Linux Security Modules     http://lsm.immunix.org     http://lsm.bkbits.net
    > 
    
    
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