Special Pack NB_51_3AS2_M.linux.tar provides security-related fixes for VERITAS NetBackup (tm) Enterprise Server / Server 5.1 on Linux servers.

Article:TECH44734  |  Created: 2005-01-08  |  Updated: 2006-01-09  |  Article URL http://www.symantec.com/docs/TECH44734
Article Type
Technical Solution


Environment

Issue



Special Pack NB_51_3AS2_M.linux.tar provides security-related fixes for VERITAS NetBackup (tm) Enterprise Server / Server 5.1 on Linux servers.

Solution



NB 5.1GA Pack NB_51_3AS2_M README November 7, 2005
Requirement: NB_CLT_51_3S2_M NB_51_3A_M
================================================================================
** THIS MAINTENANCE PACK MUST BE INSTALLED OVER THE NETBACKUP 5.1GA Pack
NB_51_3A_M MAINTENANCE PACK. ANY ATTEMPT TO INSTALL THIS PACK OVER AN EARLIER
VERSION OF NETBACKUP 5.1 WILL RESULT IN A FAILED INSTALL.**

(Please refer to the PACK DEPENDENCIES and the RELATED DOCUMENTS sections of
this Readme for additional information that applies to this pack.)

Symantec recommends that the backing up of active file systems be avoided,
or the use of snapshot technologies be implemented. The directory structure
reported back from the file system (to NetBackup) may not contain all of the
files available during the time of backup. NetBackup will not report errors
in many cases where the file's existence is not known to NetBackup as reported
by the file system.



=================
PACK DEPENDENCIES
=================

-- NB_CLT_51_3S2_M_<6 digit number>.tar must be installed before this
Maintenance Pack is installed.

-- NB_51_3A_M_<6 digit number>.<server>.tar must be installed before this
Maintenance Pack is installed.

-- Installation of this Maintenance Pack requires version 1.19.4.16.2.3
of the Vrts_pack.install script.

-- For the latest robotics support please also download and install the
latest Mappings_5.1.<6 digit number>.tar from the support website:
www.support.veritas.com.


I. DOWNLOAD INSTRUCTIONS
II. INSTALLATION INSTRUCTIONS
III. UNINSTALL INSTRUCTIONS
IV. DESCRIPTION OF PROBLEMS FIXED
Current Pack
NB_CLT_51_3AS0949_M


=========================
I. DOWNLOAD INSTRUCTIONS
=========================
1) Download the NB_CLT_51_3S2_M_<6 digit number>.tar and
NB_51_3AS2_M_<6 digit number>.<server>.tar files into the
/tmp directory,

where <6 digit number> is an internal tracking identifier

where <server> is alpha_5, hp_ux, linux, rs6000, sgi, solaris

NOTE: NB_CLT_51_3AS2_M_<6 digit number>.tar has the client binaries and
NB_51_3AS2_M_<6 digit number>.<server>.tar has the server binaries and BOTH
must be installed.

2) Extract the NB_CLT_51_3AS2_M_<6 digit number>.tar and the
NB_51_3AS2_M_<6 digit number>.<server>.tar files.
tar xvf NB_CLT_51_3AS2_M_<6 digit number>.tar
tar xvf NB_51_3AS2_M_<6 digit number>.<server>.tar

NB_51_3AS2_M will create the files:
VrtsNB_51_3AS2_M.README
VrtsNB_51_3AS2_M.<server>.tar.Z
VrtsNB_51_3AS2_M.postuninstall
VrtsNB_51_3AS2_M.postinstall
VrtsNB_51_3AS2_M.preinstall
Vrts_pack.install

NB_CLT_51_3AS2_M will create the files:
VrtsNB_CLT_51_3AS2_M.README
VrtsNB_CLT_51_3AS2_M.tar.Z
VrtsNB_CLT_51_3AS2_M.postuninstall
VrtsNB_CLT_51_3AS2_M.postinstall
VrtsNB_CLT_51_3AS2_M.preinstall



===============================
II. INSTALLATION INSTRUCTIONS
===============================
NOTE: For Maintenance Pack installation on a UNIX Cluster Environment:

1) Ensure that prior to installing the maintenance pack, NetBackup is at
release level 5.1 MP3A and configured to run in a cluster.

2) Freeze the NetBackup group (This will avoid a 'failover' during a patch
installation).

3) Install this Maintenance Pack on the inactive node(s) of the cluster
(follow steps 1-3 below).

4) Install this Maintenance Pack on the active node of the cluster (follow
steps 1-3 below).

5) Unfreeze the NetBackup group.


--------------------------------------------------------------------------------

There are two ways to install the client maintenance pack software.

1. Remote Installation: Loads the software on a master server with the intent
of pushing client software out to affected clients.

2. Local Installation: Loads and installs the software only to this local
machine.

Remote client install:

As root on the NetBackup Master Server:

1) This pack contains a full release of the IBMzSeriesLinux 2.4.21 client. To
install, you must first create the following directory:

mkdir /usr/openv/netbackup/client/Linux/IBMzSeriesLinux2.4.21

If you intend to install the Encryption libraries for this client type,
you must create the following directory:

mkdir /usr/openv/netbackup/crypt/Linux/IBMzSeriesLinux2.4.21

2) Install NB_51_3AS2_M and NB_CLT_51_3AS2_M Maintenance Pack binaries.

cd /tmp
/bin/sh Vrts_pack.install

3) Restart daemons.

/usr/openv/netbackup/bin/initbprd
/usr/openv/volmgr/bin/ltid -v

4) Update the NetBackup clients with the update_clients script.

/usr/openv/netbackup/bin/update_clients <hardware> <os>

where <hardware> <os> is one of the following:
ALPHA OSF1_V5
HP9000-700 HP-UX11.00
HP9000-800 HP-UX11.00
HP9000-700 HP-UX11.11
HP9000-800 HP-UX11.11
Linux IBMzSeriesLinux2.4
Linux IBMzSeriesLinux2.4.21
INTEL FreeBSD4.5
Linux RedHat2.4
MACINTOSH MacOSXS10.2
RS6000 AIX4.3.3
RS6000 AIX5
SCO UnixWare7.1
SGI IRIX65
Solaris Solaris7
Solaris Solaris8
Solaris Solaris9
Solaris Solaris10 *
Solaris Solaris_x86_7
Solaris Solaris_x86_8
Solaris Solaris_x86_9
Solaris Solaris_x86_10 *

* - For "Solaris Solaris10" or "Solaris Solaris_x86_10" to show when
configuring clients into a backup policy, the following must be
executed on the server:

/usr/openv/netbackup/bin/goodies/new_clients


Note: The /usr/openv/netbackup/bin/update_clients command without
any parameters will update all the UNIX clients.

Note: When updating an RS6000 client, there may be circumstances
where update_clients will fail with an error similar to
this:

Couldn't open /usr/openv/lib/libVmangle.so on client
Client open errno = 26

If this happens, execute /usr/sbin/slibclean on the client
to be updated and re-run update_clients.

If the client (CLT) .Z file and README exist in the installation
directory during the installation of the server maintenance pack, the
Vrts_pack.install script will install the client maintenance
pack automatically. The client maintenance pack will NOT be installed
automatically during a reinstall of the server maintenance pack.


Additional Notes:

If non-root administrators use the GUI only, the nonroot_admin
script no longer needs to be run. If the non-root administrators
use the command line or bpadm, the group and file permissions
will have to be changed manually on the NetBackup binaries.
Users can write their own script. The script is being phased
out because there is a slight security risk that non-root users
may be able to execute NetBackup commands only because those users
are part of a group that is allowed to execute NetBackup commands.


For "Solaris Solaris10" to show when configuring clients into a backup
policy, the following command must be executed:

/usr/openv/netbackup/bin/goodies/new_clients


===========================
III. UNINSTALL INSTRUCTIONS
===========================
Note: This will ONLY uninstall the Maintenance Pack from your local machine.

1) Close the NetBackup user interfaces.

Make sure the NetBackup server has no active jobs running (for
example, backups, restores, or duplications).

If a database agent is being used, such as Oracle,
ensure that the database services are stopped.

2) Change directory to the pack save directory.
Substitute the pack name for ${PACK} in the following command:

cd /usr/openv/pack/${PACK}/save

3) Run the un-install script:

./Vrts_pack.uninstall

4) Verify that the pack uninstalled successfully by checking
/usr/openv/pack/pack.history.

5) If update_clients was run after the pack was originally INSTALLED,
run it again after that pack is successfully UNINSTALLED.

6) If necessary, restart the NetBackup and Media Manager daemons:
/usr/openv/netbackup/bin/goodies/netbackup start


=================================
IV. DESCRIPTION OF PROBLEMS FIXED
=================================
The following are descriptions of the problems fixed. Please read the entire
document before installing.

A vulnerability has been confirmed in the NetBackup Volume Manager daemon.
Please refer to the Current Pack section for more information.


README Conventions:

Description
Describes a particular problem or feature contained in this Maintenance
Pack.

** Description **
Describes a problem that can lead to potential data loss. Please
read these problem descriptions carefully.

Workaround
Any available workarounds to a problem are also listed. Workarounds
can be used INSTEAD of applying the patch, however, Symantec strongly
recommends the "best practice" of being at the latest patch level.

Additional Notes
Any additional information regarding this problem or feature is included.


=============
Current pack
=============

================================================================================
Etrack Incident = ET494041 ET494466 ET498548

Description:
A vulnerability has been confirmed in the NetBackup Volume Manager
daemon (vmd). By sending a specially crafted packet to the Volume Manager,
a stack overflow occurs. This is caused by improper bounds checking.
Exploitation does not require authentication, thereby allowing a remote
attacker to take over the system or disrupt the backup capabilities.
Further testing and code inspection has revealed that all other
NetBackup 5.1 daemons are potentially affected in the same manner.
Therefore, any Master Servers, Media Servers, Clients and Console machines
at this version level are subject to this vulnerability. However,
NetBackup 5.1 database agents are not affected by this issue.

Refer to the Related Document section for more details.
================================================================================

===================
NB_CLT_51_3AS0949_M
===================

Etrack Incident = ET427175

Description:
A change has been made to avert a potential vulnerability in a Java
authentication service that runs on VERITAS NetBackup servers and clients.
This change prohibits remote attackers from executing arbitrary code on a
targeted system. In addition, Symantec recommends that users block the
affected ports from external network access.
================================================================================


Attachments

NB_51_3AS2_M_280092.linux.tar (548 kBytes)


Legacy ID



280092


Article URL http://www.symantec.com/docs/TECH44734


Terms of use for this information are found in Legal Notices