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From: [log in to unmask] (Security Alert)
Newsgroups: comp.security.misc
Subject: Security Vulnerability in nettune executable
Date: 8 Aug 1996 21:36:10 GMT
Organization: Hewlett Packard Cupertino Site
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HEWLETT-PACKARD SECURITY BULLETIN: HPSBUX9607-035, 22 July 1996
-------------------------------------------------------------------------

The information in the following Security Bulletin should be acted upon
as soon as possible.  Hewlett Packard will not be liable for any
consequences to any customer resulting from customer's failure to fully
implement instructions in this Security Bulletin as soon as possible.

-------------------------------------------------------------------------
PROBLEM:  Incorrect permissions on nettune executable

PLATFORM: HP 9000/700 and 9000/800 systems running operating system
          version 10.0 or 10.01 of HP-UX.  

DAMAGE:   The configuration of various networking parameters could be 
          modified by non-root users.

SOLUTION: Login as root user and issue the following commands:

          chmod 555 /usr/contrib/bin/nettune
          chown bin /usr/contrib/bin/nettune

AVAILABILITY: Not applicable
          
-------------------------------------------------------------------------

I.    Nettune 

   A. Background

      The nettune program is a utility program that allows non-root 
      users to examine and root users to modify several items that 
      affect networking.  The nettune binary that ships with HP-UX 
      10.0 and 10.01 has incorrect permission attributes that allow 
      non-root users to modify networking parameters which only root 
      users should be able to modify.  Operating systems released 
      after 10.01, such as HP-UX 10.10, correctly set the permissions
      on this program file and are therefore not vulnerable. 
  
      
   B. Fixing the problem
    
      The fix for this problem is to modify the owner and execution 
      permissions of the nettune binary itself.  This can easily be
      accomplished using the chown and chmod commands listed below.


   C. Recommended solution

      Login as root user and issue the following commands:

          chmod 555 /usr/contrib/bin/nettune
          chown bin /usr/contrib/bin/nettune


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