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             AUSCERT External Security Bulletin Redistribution

                        ESB-2007.0850 -- [Solaris]
  Security Vulnerability in the Solaris 10 Internet Protocol (ip(7P)) may
                Lead to a Denial of Service (DoS) Condition
                              1 November 2007

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

Product:              Internet Protocol Stack
Publisher:            Sun Microsystems
Operating System:     Solaris 10
Impact:               Denial of Service
Access:               Existing Account
CVE Names:            CVE-2007-5716

Original Bulletin:    
  http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-26-103087-1

Revision History:     November 1 2007: Added CVE-2007-5716
                      October 31 2007: Initial Release

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Sun(sm) Alert Notification
     * Sun Alert ID: 103087
     * Synopsis: Security Vulnerability in the Solaris 10 Internet
       Protocol (ip(7P)) may Lead to a Denial of Service (DoS) Condition
     * Category: Security
     * Product: Solaris 10 Operating System
     * BugIDs: 6577595
     * Avoidance: Patch
     * State: Resolved
     * Date Released: 29-Oct-2007
     * Date Closed: 29-Oct-2007
     * Date Modified: 

1. Impact

   A security vulnerability in the Solaris 10 Internet Protocol (ip(7P))
   may allow a local unprivileged user the ability to cause a system
   panic, thereby causing a Denial of Service (DoS) to the system as a
   whole.

2. Contributing Factors

   This issue can occur in the following releases:

   SPARC Platform
     * Solaris 10 with patch 118833-04 or later and without patch
       127111-02

   x86 Platform
     * Solaris 10 with patch 118855-03 or later and without patch
       127112-02

   Note: Solaris 8 and Solaris 9 are not impacted by this issue.

3. Symptoms

   If the described issue occurs, the system will panic with a stack
   trace similar to the following:
    panic[cpu3]/thread=300027ab340:
    BAD TRAP: type=34 rp=2a1011a6f90 addr=139 mmu_fsr=0

    ip_wput_ire+0x1bc0(600040f35a8, 60004042a18, 0, 10000, 0, 0)
    ip_output+0x964(0, 60004042b88, 0, 0, 0, 60009b42470)
    udp_output_v4+0x5c4(60009afaac0, 0, d0000, 6000499b650, 600040f35a8, 2a1011
a769c)
    udp_output+0x448(60009afaac0, 6000498b300, 60004903358, 300002a2680, 201040
22, 10)
    udp_wput_data+0xd8(60009afaac0, 6000498b300, 60004903358, 0, 0, 0)
    sodgram_direct+0xbc(6000a343ca0, 60004903358, 10, 2a1011a7aa0, 6000498b300,
 0)
    sotpi_sendmsg+0x454(6000a343ca0, 2a1011a7a70, 2a1011a7aa0, 0, 1200020, 0)
    sendit+0x134(3, 2a1011a7a70, 2a1011a7aa0, 60004903358, 6000a343ca0, 0)
    sendto+0x64(3, 21208, 5, 0, ffbffa24, 10)
    syscall_trap32+0xcc(3, 21208, 5, 0, ffbffa24, 10) 

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 10 with patch 127111-02 or later

   x86 Platform
     * Solaris 10 with patch 127112-02 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 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa
   Clara, CA 95054 U.S.A. All rights reserved

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