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             AUSCERT External Security Bulletin Redistribution

     ESB-2004.0085 -- Sun(sm) Alert Notification - Sun Alert ID: 57474
  Security Vulnerability Involving the tcsetattr(3C) Library Function on
                            SPARC Based Systems
                             03 February 2004

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

Product:                tcsetattr(3C) library function
Publisher:              Sun Microsystems
Operating System:       Solaris 8
                        Solaris 7
                        Solaris 2.6
Platform:               SPARC
Impact:                 Denial of Service
Access Required:        Existing Account

Comment: Original Bulletin:

         http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F57474

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   DOCUMENT ID: 57474
   SYNOPSIS: Security Vulnerability Involving the tcsetattr(3C) Library
   Function on SPARC Based Systems
   DETAIL DESCRIPTION:
   
Sun(sm) Alert Notification

     * Sun Alert ID: 57474
     * Synopsis: Security Vulnerability Involving the tcsetattr(3C)
       Library Function on SPARC Based Systems
     * Category: Security
     * Product: Solaris
     * BugIDs: 4360114
     * Avoidance: Patch
     * State: Resolved
     * Date Released: 30-Jan-2004
     * Date Closed: 30-Jan-2004
     * Date Modified:
       
1. Impact

   On SPARC based Solaris systems, a security vulnerability in the
   tcsetattr(3C) library function may allow an unprivileged local user
   the ability to hang the system hard which is a type of Denial of
   Service (DoS).
   
2. Contributing Factors

   This issue can occur in the following releases:
   
   SPARC Platform
     * Solaris 2.6 without patch 105924-12
     * Solaris 7 without patch 107589-06
     * Solaris 8 without patch 109815-20
       
   Note: Solaris 9 and Solaris on the x86 platform are not affected by
   this issue.
   
3. Symptoms

   If the described issue occurs, the system will be unresponsive, and a
   reboot is typically required to regain functionality.
   SOLUTION SUMMARY:
   
4. Relief/Workaround

   There is no workaround. Please see the "Resolution" section below.
   
5. Resolution

   This issue is addressed in the following releases:
   
   SPARC Platform
     * Solaris 2.6 with patch 105924-12 or later
     * Solaris 7 with patch 107589-06 or later
     * Solaris 8 with patch 109815-20 or later
     * Solaris 9
       
   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 2000-2004 Sun Microsystems, Inc., 4150 Network Circle, Santa
   Clara, CA 95054 U.S.A. All rights reserved.
   



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