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             AUSCERT External Security Bulletin Redistribution

                               ESB-2009.1570
       Denial of Service Vulnerabilities in ldap_cachemgr(1M) Daemon
                             26 November 2009

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

Product:           LDAP client configuration cache daemon
Publisher:         Sun Microsystems
Operating System:  Solaris
                   OpenSolaris
Impact/Access:     Denial of Service -- Existing Account
Resolution:        Patch/Upgrade

Original Bulletin: 
   http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-231402-1

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Denial of Service Vulnerabilities in ldap_cachemgr(1M) Daemon
  _________________________________________________________________

Category : Security
Release Phase : Workaround
Bug Id : 6557371, 6609144, 6610117
Product : Solaris 8 Operating System
Solaris 9 Operating System
Solaris 10 Operating System
OpenSolaris
Date of Workaround Release : 24-Nov-2009

Denial of Service Vulnerabilities in ldap_cachemgr(1M) Daemon


1. Impact
Multiple security vulnerabilities in the LDAP client configuration
cache daemon (ldap_cachemgr(1M)) may allow a local unprivileged user
to terminate the ldap_cachemgr daemon. On Solaris 9 and 10 systems
this will prevent LDAP name service requests from succeeding. This is
a type of Denial of Service (DoS) as LDAP name service requests will
hang and users may no longer be able to login to LDAP client systems.
On Solaris 8 systems, LDAP name service requests will be slower, as
caching will not occur which is also a type of Denial of Service
(DoS).

2. Contributing Factors
These issues can occur in the following releases:
SPARC Platform:
  * Solaris 8
  * Solaris 9 without patch 112960-69
  * Solaris 10 without patch 127111-07
  * OpenSolaris based upon builds snv_01 through snv_77

x86 Platform:
  * Solaris 8
  * Solaris 9 without patch 114242-54
  * Solaris 10 without patch 127954-04
  * OpenSolaris based upon builds snv_01 through snv_77

Notes:

1. Solaris 8 entered EOSL Phase 2 on 1 April 2009. Entitlement to
patches developed on or after 1 April 2009 requires the purchase of
the Solaris 8 Vintage Patch Service. See Note in section 5 for more
details.

2. These issues only affect systems configured as native LDAP clients.
To determine if a system is configured as a native LDAP client, the
following command can be run:
 $ test -f /var/ldap/ldap_client_file || echo "System is not an LDAP client"


3. Symptoms
The ldap_cachemgr(1M) daemon would no longer be running despite the
presence of the '/var/ldap/ldap_client_file' file. LDAP name service
requests for any services configured to use LDAP in the
nsswitch.conf(4) file will fail on Solaris 9 and 10 and take longer to
succeed on Solaris 8. Solaris 10 systems would show the smf(5) service
identifier for the ldap_cachemgr service,
svc:/network/ldap/client:default, in the maintenance state. The
service's status can be checked using svcs(1):
 $ svcs svc:/network/ldap/client:default
 STATE          STIME    FMRI
 maintenance    1:23:45 svc:/network/ldap/client:default


4. Workaround
There is no workaround for these issues. Please see the Resolution
section below.

5. Resolution
These issues are addressed in the following releases:
SPARC Platform:
  * Solaris 9 with patch 112960-69 or later
  * Solaris 10 with patch 127111-07 or later
  * OpenSolaris based upon builds snv_78 or later

x86 Platform:
  * Solaris 9 with patch 114242-54 or later
  * Solaris 10 with patch 127954-04 or later
  * OpenSolaris based upon builds snv_78 or later

A final resolution is pending completion for Solaris 8.
Note: The READMEs of Solaris 8 patches developed on or after 1 April
2009 are available to all customers however Solaris 8 entered EOSL
Phase 2 on April 1, 2009 and thus entitlement for these patches,
including those that fix security vulnerabilities, requires the
purchase of the Solaris 8 Vintage Patch Service. More information
about the Solaris 8 Vintage Patch Service is available at:

  http://www.sun.com/service/eosl/Solaris8.html

For more information on Security Sun Alerts, see Technical
Instruction ID 213557.
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 2000-2009 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved

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