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AUSCERT External Security Bulletin Redistribution
ESB-2009.0005 -- [Solaris]
An Issue in the Solaris LDAP Daemon May Cause the System to Hang
12 February 2009
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AusCERT Security Bulletin Summary
---------------------------------
Product: LDAP
Publisher: Sun Microsystems
Operating System: Solaris
OpenSolaris
Impact: Denial of Service
Access: Existing Account
Original Bulletin:
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-248486-1
Revision History: February 12 2009: Patch released for Solaris 10
January 7 2009: Initial Release
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Solution Type: Sun Alert
Solution 248486 : An Issue in the Solaris LDAP Daemon May Cause the
System to Hang
Bug ID: 6774895, 4768758, 6223254
Product
Solaris 8 Operating System
Solaris 9 Operating System
Solaris 10 Operating System
OpenSolaris
Date of Workaround Release: 23-Dec-2008
Date of Resolved Release: 10-Feb-2009
SA Document Body
An Issue in the Solaris LDAP Daemon May Cause the System to Hang
1. Impact
An issue in the Solaris 10 LDAP daemon (ldap_cachemgr(1M)) may, under
certain conditions, hang this daemon and possibly hang the entire
system.
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform:
* Solaris 8 without patch 108993-63
* Solaris 9 without patch 112960-41
* Solaris 10 without patch 124987-01
* Solaris 10 with patch 127111-07 or later and without patch
140144-01
* OpenSolaris based upon builds snv_01 through snv_11
x86 Platform:
* Solaris 8 without patch 108994-63
* Solaris 9 without patch 114242-28
* Solaris 10 without patch 120037-10
* Solaris 10 with patch 127954-04 or later and without patch
140145-01
* OpenSolaris based upon builds snv_01 through snv_11
Notes:
1. This issue was initially fixed using BugID 4768758 and resulted in
a set of patches for Solaris 8,9 and 10. But a subsequent change in
this area caused this fix for 4768758 to be eliminated in Solaris 10.
BugID 6774895 is used to fix this issue a second time in Solaris 10.
OpenSolaris received the fix for this issue via BugID 6223254.
2. This issue only occurs if the ldap_cachemgr(1M) process is running.
The following commands may be run to check if the ldap_cachemgr(1M)
process is running:
Solaris 10 and OpenSolaris only:
$ svcs svc:/network/ldap/client:default
For all other Solaris releases:
$ /usr/bin/pgrep ldap_cachemgr
3. Symptoms
Should the described issue occur, users are unable to log in and
Solaris commands may be unresponsive.
The following command (executed as root) may be used to confirm the
issue has occurred:
# /usr/bin/pstack `pgrep ldap_cachemgr`
Output from the above command showing many threads similar to the
following is an indication this issue has occurred:
----------------- lwp# 13 / thread# 13 --------------------
ff1c52d8 lwp_park (0, 0, 0)
00016b80 ???????? (4, fe6fbf8c, fe6fbee8, 10, 2c400, 0)
00016e00 getldap_getserver (fe6fbee8, fe6fbf88, 2c400, 0, 17e90,
fe6fbe7e) + bc
000130b8 ???????? (f0, fe6fbf88, 13, 0, 0, 54)
ff1c6a2c _door_return (0, 0, 0, 0, 0, 0) + 68
----
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 108993-63 or later
* Solaris 9 with patch 112960-41 or later
* Solaris 10 with patch 140144-01 or later
* OpenSolaris based upon builds snv_12 or later
x86 Platform:
* Solaris 8 with patch 108994-63 or later
* Solaris 9 with patch 114242-28 or later
* Solaris 10 with patch 140145-01 or later
* OpenSolaris based upon builds snv_12 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 2000-2009 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved
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