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AUSCERT External Security Bulletin Redistribution
ESB-2007.0772 -- [Solaris]
Security Vulnerabilities in the Solaris Trusted Extensions "labeld" Service
May Lead to a Denial of Service (DoS) Condition
11 October 2007
AusCERT Security Bulletin Summary
Product: Solaris 10 Operating System
Publisher: Sun Microsystems
Operating System: Solaris
Impact: Denial of Service
Access: Existing Account
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Sun(sm) Alert Notification
* Sun Alert ID: 103109
* Synopsis: Security Vulnerabilities in the Solaris Trusted
Extensions "labeld" Service May Lead to a Denial of Service (DoS)
* Category: Security
* Product: Solaris 10 Operating System
* BugIDs: 6598913, 6598910
* Avoidance: Patch
* State: Resolved
* Date Released: 09-Oct-2007
* Date Closed: 09-Oct-2007
* Date Modified:
Two Security Vulnerabilities in Solaris Trusted Extensions label
daemon (labeld) may allow a local unprivileged user to stop Trusted
Extensions services from running on a system. When this occurs, all
existing Trusted Desktop sessions would hang and unprivileged users
may not be able to log in to the affected trusted system. This creates
a Denial of Service (DoS) condition.
2. Contributing Factors
This issue can occur in the following releases:
* Solaris 10 without patch 126448-04
* Solaris 10 without patch 126449-04
Note: Solaris 8 and Solaris 9 are not impacted by these issues.
To determine if a system is configured with Trusted Extensions, the
following command can be run:
$ svcs /system/labeld
STATE STIME FMRI
online 07:08:09 svc:/system/labeld:default
If the state is disabled or if "/system/labeld" service is not listed,
then the system is not configured to use Trusted Extensions.
Should the described issue occur, a Trusted Extensions service
"svc:/system/labeld" would be in a "maintenance" state.
To determine the state of the "labeld" service, the following command
can be run:
$ svcs /system/labeld
STATE STIME FMRI
maintenance 07:08:09 svc:/system/labeld:default
There is no workaround. Please see the Resolution section below.
This issue is addressed in the following releases:
* Solaris 10 with patch 126448-04 or later
* Solaris 10 with patch 126449-04 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
notification may only be used for the purposes contemplated by these
Copyright 2000-2006 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved
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