Note: This is an archival copy of Security Sun Alert 242266 as previously published on http://sunsolve.sun.com.
Latest version of this security advisory is available from http://support.oracle.com as Sun Alert 1019612.1.
Article ID : 1019612.1
Article Type : Sun Alerts (SURE)
Last reviewed : 2009-01-08
Audience : PUBLIC
Copyright Notice: Copyright © 2010, Oracle Corporation and/or its affiliates.

Security Vulnerability in Solaris IP Tunnel Parameter Processing May Lead to a System Panic or Possible Execution of Arbitrary Code by Unprivileged Users



Category
Security

Release Phase
Resolved

Bug Id
6606222

Product
Solaris 10 Operating System
OpenSolaris

Date of Resolved Release
17-Dec-2008

Security Vulnerability in Solaris IP Tunnel Parameter Processing May Lead to a System Panic or Possible Execution of Arbitrary Code by Unprivileged Users

1. Impact

A security vulnerability in the Solaris 10 IP tunnel parameter processing (see tun(7M)) may allow a local unprivileged user the ability to panic the system or execute arbitrary commands with all (super-user) privileges. The ability to panic a system is a type of Denial of Service (DoS).
   
Sun acknowledges with thanks, Tobias Klein (http://www.trapkit.de/) for bringing this issue to our attention.

This issue is also referenced in the following document:


2. Contributing Factors

This issue can occur in the following releases:
   
SPARC Platform
  • Solaris 10 without patch 138888-01
  • OpenSolaris based upon builds snv_01 through snv_76
x86 Platform
  • Solaris 10 without patch 138889-01
  • OpenSolaris based upon builds snv_01 through snv_76
Notes:

1. Solaris 8 and 9 are not impacted by this issue.
2. Systems do not need to have tunneling configured to be vulnerable to this issue.

3. Symptoms

If the described issue occurs, the system may panic with a stack strace similar to the following:
ip_sioctl_tunparam()
ip_process_ioctl()
ip_wput()
putnext()
putnext()
strdoioctl()
strioctl()
spec_ioctl()
fop_ioctl()
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 10 with patch 138888-01 or later
  • OpenSolaris based upon builds snv_77 or later
x86 Platform
  • Solaris 10 with patch 138889-01 or later
  • OpenSolaris based upon builds snv_77 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.


Modification History
09-Jan-2008: Updated "Notes" in Contributing Factors section


References

138888-01
138889-01





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