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AUSCERT External Security Bulletin Redistribution
ESB-2008.0573 -- [Solaris]
Small Appending Writes May Result in Data Loss in
Sun/Solaris Cluster 3.1 or 3.2 Filesystem
3 June 2008
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Solaris Cluster 3.2
Sun Cluster 3.1
Publisher: Sun Microsystems
Operating System: Solaris
Impact: Modify Arbitrary Files
Access: Existing Account
Ref: ESB-2007.0269
Original Bulletin:
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-200200-1
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Solution Type: Sun Alert
Solution 200200 : Small Appending Writes May Result in Data Loss in
Sun/Solaris Cluster 3.1 or 3.2 Filesystem
Previously Published As: 102778
Product
Sun Cluster 3.1
Solaris Cluster 3.2
Bug ID: 6507810
Date of Workaround Release: 18-JAN-2007
Date of Resolved Release: 29-May-2008
SA Document Body
Small Appending Writes May Result in Data Loss in Sun/Solaris Cluster
3.1 or 3.2 Filesystem
1. Impact
In rare cases, small appending writes to a file located on a Sun
Cluster 3.1 or Solaris Cluster 3.2 filesystem may result in some data
that was written to be lost and replaced with random data.
2. Contributing Factors
This issue can occur in the following releases:
SPARC Platform
* Sun Cluster 3.1 (for Solaris 8) with patch 117950-25 through
117950-28 and without patch 117950-29
* Sun Cluster 3.1 (for Solaris 9) with patch 117949-25 through
117949-28 and without patch 117949-29
* Sun Cluster 3.1 (for Solaris 10) with patch 120500-10 through
120500-13 and without patch 120500-14
* Solaris Cluster 3.2 (for Solaris 9) without patch 125510-01
* Solaris Cluster 3.2 (for Solaris 10) without patch 125511-01
x86 Platform
* Sun Cluster 3.1 (for Solaris 9) with patch 117909-25 through
117909-28 and without patch 117909-29
* Sun Cluster 3.1 (for Solaris 10) with patch 120501-10 through
120501-13 and without patch 120501-14
* Solaris Cluster 3.2 (for Solaris 10) without patch 125512-01
Notes:
1. Sun Cluster 3.0 is not affected by this issue.
2. Sun/Solaris Cluster is not supported for Solaris 8 on the x86
platform.
3. Solaris Cluster 3.2 is not supported for Solaris 9 on the x86
platform.
3. Symptoms
Should the described issue occur, the file being written to will
contain a section of random data or null bytes instead of the expected
data. The file will usually contain valid data before and after the
corrupted data.
4. Workaround
To work around this issue, the affected patches may be removed to
return to a safe revision of the patch. Remove the latest cluster core
patch (117950, 117949, 117909) and re-install version -11 or earlier.
(Note this older revision is required due to similar issues also being
reported in Sun Alert 102333. There is no safe revision for Solaris
10).
Note: If "scinstall" was used to install or upgrade to Sun Cluster
3.1_U4 you will not be able to remove the core patch.
Or, the following work around may be applied:
1. Add the following entry to the "/etc/system" file on all nodes of
the cluster:
set pxfs:pxfs_software_mount_level=1
2. Shut down the entire cluster:
$ scshutdown -y -g0
3. Wait for all nodes in the cluster to be down.
4. Restart all nodes in the cluster.
Note: This workaround may impact performance for Sun Cluster file
systems.
5. Resolution
This issue is addressed in the following releases:
SPARC Platform
* Sun Cluster 3.1 (for Solaris 8) with patch 117950-29 or later
* Sun Cluster 3.1 (for Solaris 9) with patch 117949-29 or later
* Sun Cluster 3.1 (for Solaris 10) with patch 120500-14 or later
* Solaris Cluster 3.2 (for Solaris 9) with patch 125510-01 or later
* Solaris Cluster 3.2 (for Solaris 10) with patch 125511-01 or later
x86 Platform
* Sun Cluster 3.1 (for Solaris 9) with patch 117909-29 or later
* Sun Cluster 3.1 (for Solaris 10) with patch 120501-14 or later
* Solaris Cluster 3.2 (for Solaris 10) with patch 125512-01 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 2000-2008 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved
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