Bug Id
6433954

Product
Solaris 8 Operating System
Solaris 9 Operating System
Solaris 10 Operating System
OpenSolaris

Date of Resolved Release
22-Jan-2009

Security vulnerability in the Solaris Pseudo-terminal driver (pty(7D)) may cause a system panic:

1. Impact

A race condition security vulnerability in the Solaris pseudo-terminal driver (pty(7D)) module may allow a local unprivileged user to panic the system causing a Denial of Service (DoS).

2. Contributing Factors

This issue can occur in the following releases:

SPARC Platform

• Solaris 8 without patch 113685-07
  
• Solaris 9 without patch 140426-01
• Solaris 10 without patch 140383-01
  
• OpenSolaris based upon builds snv_01 through snv_102
  

x86 Platform

• Solaris 8 without patch 113686-06
• Solaris 9 without patch 140427-01
  
• Solaris 10 without patch 140384-01
• OpenSolaris based upon builds snv_01 through snv_102

Note: OpenSolaris distributions may include additional bug fixes above and beyond the build from which it was derived.  To determine the base build of OpenSolaris, the following command can be used:

    $ uname -v
    snv_86

3. Symptoms

If the described issue occurs, the system will panic with a stack trace similar to the following:

    panic: BAD TRAP: occurred in module "unix" due to a NULL pointer dereference
    unix:die()
    unix:trap()
    unix:ktl0()
    unix:putnext()
    genunix:strdoioctl()
    genunix:strioctl()
    ptc:ptcioctl()
    genunix:fop_ioctl()
    genunix:ioctl()

4. Workaround

There is no workaround for this issue. Please see the Resolution section below.

5. Resolution

This issue is addressed in the following releases:

SPARC Platform

• Solaris 8 with patch 113685-07 or later
• Solaris 9 with patch 140426-01 or later
• Solaris 10 with patch 140383-01 or later
• OpenSolaris based upon builds snv_103 or later
  

x86 Platform

• Solaris 8 with patch 113686-06 or later
• Solaris 9 with patch 140427-01 or later
• Solaris 10 with patch 140384-01 or later
• OpenSolaris based upon builds snv_103 or later

For more information on Security Sun Alerts, see 1009886.1.

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 2000-2008 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. All rights reserved.

References

113685-07
113686-06
140426-01
140427-01
140383-01





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