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ESB-2005.0620 -- Sun Alert Notification 101842 -- Security Vulnerability in The "printd" Daemon

Date: 10 August 2005

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

              ESB-2005.0620 -- Sun Alert Notification 101842
               Security Vulnerability in The "printd" Daemon
                              10 August 2005

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           printd
Publisher:         Sun Microsystems
Operating System:  Solaris
Impact:            Delete Arbitrary Files
Access:            Remote/Unauthenticated

Original Bulletin: http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-101842-1

- --------------------------BEGIN INCLUDED TEXT--------------------

Sun(sm) Alert Notification
     * Sun Alert ID: 101842
     * Synopsis: Security Vulnerability in The "printd" Daemon
     * Category: Security
     * Product: Solaris 9 Operating System, Solaris 10 Operating System,
       Solaris 7 Operating System, Solaris 8 Operating System
     * BugIDs: 6289134
     * Avoidance: Patch
     * State: Resolved
     * Date Released: 08-Aug-2005
     * Date Closed: 08-Aug-2005
     * Date Modified: 

1. Impact

   A local or remote unprivileged user may be able to remove any file on
   the system due to a security vulnerability in the "printd" daemon.

   Sun acknowledges, with thanks, H.D. Moore of Metaspoilt.com, for
   bringing this issue to our attention.

2. Contributing Factors

   This issue can occur in the following releases:

   SPARC Platform
     * Solaris 7 without patch 107115-19
     * Solaris 8 without patch 109320-16
     * Solaris 9 without patch 113329-15
     * Solaris 10 without patch 120467-01

   x86 Platform
     * Solaris 7 without patch 107116-19
     * Solaris 8 without patch 109321-16
     * Solaris 9 without patch 114980-16
     * Solaris 10 without patch 120468-01

   This issue only occurs on systems that have the printer package
   "SUNWpcu" installed.

3. Symptoms

   There are no reliable symptoms that would indicate the described issue
   has been exploited. 

4. Relief/Workaround

   To work around the described issue, one of the following options can
   be applied:

   Option 1:

   Temporarily rename the following file used by the "printd" daemon:
    /usr/lib/print/bsd-adaptor/bsd_cascade.so.1

   Note: Renaming this file will cause systems configured to use the
   cascade spooler to fail to send print requests to the configured
   remote host.

   Option 2:

   Disable the BSD print protocol adaptor (in.lpd(1M)) by doing the
   following:

   For pre-Solaris 10 systems:

   1. Edit the "/etc/inetd.conf" file and comment out the following line
   by adding the "#" symbol to the beginning of the line as shown:
    #printer stream tcp6 nowait root /usr/lib/print/in.lpd in.lpd

   2. Tell the inetd(1M) process to reread the newly modified
   "/etc/inetd.conf" file by sending it a hangup signal, SIGHUP:
    # /usr/bin/pkill -HUP inetd

   For systems running Solaris 10 or above:

   Execute the following command:
    # svcadm disable svc:/application/print/rfc1179


5. Resolution

   This issue is addressed in the following releases:

   SPARC Platform
     * Solaris 7 with patch 107115-19 or later
     * Solaris 8 with patch 109320-16 or later
     * Solaris 9 with patch 113329-15 or later
     * Solaris 10 with patch 120467-01 or later

   x86 Platform
     * Solaris 7 with patch 107116-19 or later
     * Solaris 8 with patch 109321-16 or later
     * Solaris 9 with patch 114980-16 or later
     * Solaris 10 with patch 120468-01 or later

   This Sun Alert notification is being provided to you on an "AS IS"
   basis. This Sun Alert notification may contain information provided by
   third parties. The issues described in this Sun Alert notification may
   or may not impact your system(s). Sun makes no representations,
   warranties, or guarantees as to the information contained herein. ANY
   AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
   WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
   NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT
   YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT,
   INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE
   OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN.
   This Sun Alert notification contains Sun proprietary and confidential
   information. It is being provided to you pursuant to the provisions of
   your agreement to purchase services from Sun, or, if you do not have
   such an agreement, the Sun.com Terms of Use. This Sun Alert
   notification may only be used for the purposes contemplated by these
   agreements.

   Copyright 2000-2005 Sun Microsystems, Inc., 4150 Network Circle, Santa
   Clara, CA 95054 U.S.A. All rights reserved

- --------------------------END INCLUDED TEXT--------------------

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        http://www.auscert.org.au/render.html?cid=1980

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================

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