February 2005
Three IBM Security Advisories
ID: 00124
Ref: 2005/108
Date: 11 February 2005:12:07:02
Version: 1
Title: Three IBM Security Advisories
Abstract:
Vendors affected: IBM
Operating systems affected: IBM
Applications affected: IBM
Title
=====
Three IBM Security Advisories:
1. Buffer overflow vulnerability in netpmon
2. Buffer overflow vulnerability in ipl_varyon
3. Arbitrary file read vulnerability in lspath
Detail
======
1. A buffer overflow in netpmon may allow a local user in the system group to gain
root privileges.
2. A buffer overflow in the ipl_varyon command may allow a local user in the
system group to gain root privileges.
3. A vulnerability in the lspath command allows any local user to read from any
file.
1.
ESB-2005.0139 -- IBM Security Advisory
Buffer overflow vulnerability in netpmon
11 February 2005
Product: netpmon
Publisher: IBM
Operating System: AIX 5.1, 5.2 and 5.3
Impact: Root Compromise
Access: Existing Account
- - --------------------------BEGIN INCLUDED TEXT--------------------
- - -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
IBM SECURITY ADVISORY
First Issued: Wed Feb 9 15:16:37 CST 2005
=========================================================================
VULNERABILITY SUMMARY
VULNERABILITY: A buffer overflow in netpmon may allow a local user
in the system group to gain root privileges.
PLATFORMS: AIX 5.1, 5.2 and 5.3.
SOLUTION: Apply the workaround, efix or APAR as described
below.
THREAT: A local user in the system group may gain root
privileges.
CERT VU Number: N/A
CVE Number: N/A
=========================================================================
DETAILED INFORMATION
I. Description
===============
A buffer overflow vulnerability was discovered in the netpmon command. This command
monitors activity and reports statistics on network I/O and network-related CPU usage. A user in the system group may exploit this vulnerability to gain root privileges.
The command affected by this issue ships as part of the bos.perf.tools fileset. To
determine if this fileset is installed, execute the following
command:
# lslpp -L bos.perf.tools
If the fileset is installed it will be listed along with its version information, state, type and a description.
II. Impact
==========
A local user in the system group may gain root privileges.
III. Solutions
===============
A. Official Fix
IBM provides the following fixes:
APAR number for AIX 5.1.0: IY67807 (available approx. 03/23/05)
APAR number for AIX 5.2.0: IY67136 (available approx. 04/15/05)
APAR number for AIX 5.3.0: IY67124 (available approx. 04/15/05)
NOTE: Affected customers are urged to upgrade to 5.1.0, 5.2.0 or 5.3.0 at the latest maintenance level.
B. Emergency Fix
Efixes are available for AIX 5.1.0, 5.2.0 and 5.3.0. The efixes can be downloaded via ftp from:
ftp://aix.software.ibm.com/aix/efixes/security/netpmon_efix.tar.Z
netpmon_efix.tar.Z is a compressed tarball containing this advisory, three efix packages
cleartext PGP signatures for each efix package.
Verify you have retrieved the efixes intact:
- - - --------------------------------------------
The checksums below were generated using the "sum" and "md5sum" commands and are as follows:
Filename sum md5
=====================================================================
IY67807.050209.epkg.Z 27708 70 3c2ffeeca5c573862131b5680df7098b
IY67136.050209.epkg.Z 32162 51 aa6d54e0e2dfb4d5c6183050f97b7036
IY67124.050209.epkg.Z 58778 53 39d78095acf72a77630d3a2022155edb
These sums should match exactly. The PGP signatures in the compressed tarball and on this advisory can also be used to verify the integrity of the various files they correspond to. If the sums or signatures cannot be confirmed, double check the command results and the
download site address. If those are OK, contact IBM AIX Security at security-alert@austin.ibm.com
and describe the discrepancy.
IMPORTANT: If possible, it is recommended that a mksysb backup of the system is created. Verify
it is both bootable, and readable before proceeding.
These efixes have not been fully regression tested; thus, IBM does not warrant the fully correct functioning of the efix. Customers install the efix and operate the modified version of AIX at
their own risk.
Efix Installation Instructions:
- - - -------------------------------
These packages use the new Emergency Fix Management Solution to install and manage efixes. More
information can be found at:
http://techsupport.services.ibm.com/server/aix.efixmgmt
To preview an epkg efix installation execute the following command:
# emgr -e epkg_name -p # where epkg_name is the name of the
# efix package being previewed.
To install an epkg efix package, execute the following command:
# emgr -e epkg_name -X # where epkg_name is the name of the
# efix package being installed.
The "X" flag will expand any filesystems if required.
C. Workaround
Setting the file mode bits to 500 will allow only the root user to execute the netpmon command. This can be done by executing the following command as root:
# chmod 500 /usr/bin/netpmon
Verify that the file mode bits have been changed to 500:
# ls -la /usr/bin/netpmon
- - - -r-x------ 1 root system 83454 2003-04-09 18:48 /usr/bin/netpmon
IV. Obtaining Fixes
===================
AIX Version 5 APARs can be downloaded from:
http://www-1.ibm.com/servers/eserver/support/pseries/aixfixes.html
Security related Emergency Fixes can be downloaded from:
ftp://aix.software.ibm.com/aix/efixes/security
V. Acknowledgments
====================
This vulnerability was reported by iDEFENSE.
VI. Contact Information
========================
If you would like to receive AIX Security Advisories via email, please
visit:
https://techsupport.services.ibm.com/server/pseries.subscriptionSvcs
Comments regarding the content of this announcement can be directed to:
security-alert@austin.ibm.com
To request the PGP public key that can be used to communicate securely with the AIX
Security Team send email to security-alert@austin.ibm.com with a subject of "get key".
The key can also be downloaded from a PGP Public Key Server. The key id is 0x9391C1F2.
Please contact your local IBM AIX support center for any assistance.
eServer is a trademark of International Business Machines Corporation. IBM, AIX and pSeries are registered trademarks of International Business Machines Corporation. All other trademarks are property of their respective holders.
2.
ESB-2005.0140 -- IBM Security Advisory
Buffer overflow vulnerability in ipl_varyon
11 February 2005
Product: ipl_varyon
Publisher: IBM
Operating System: AIX 5.1, 5.2 and 5.3
Impact: Root Compromise
Execute Arbitrary Code/Commands
Access: Existing Account
- - --------------------------BEGIN INCLUDED TEXT--------------------
- - -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
IBM SECURITY ADVISORY
First Issued: Wed Feb 9 15:16:37 CST 2005
=========================================================================
VULNERABILITY SUMMARY
VULNERABILITY: A buffer overflow in the ipl_varyon command may
allow a local user in the system group to gain root
privileges.
PLATFORMS: AIX 5.1, 5.2 and 5.3.
SOLUTION: Apply the workaround, efix or APAR as described
below.
THREAT: A local user in the system group may gain root
privileges.
CERT VU Number: N/A
CVE Number: N/A
=========================================================================
DETAILED INFORMATION
I. Description
===============
A buffer overflow vulnerability was discovered in the ipl_varyon command. This command is used to varyon the root volume group during the boot process. A user in the system
group may exploit this vulnerability to gain root privileges.
The command affected by this issue ships as part of the bos.rte.lvm fileset. To determine if this fileset is installed, execute the following
command:
# lslpp -L lslpp -L bos.rte.lvm
If the fileset is installed it will be listed along with its version information, state, type and a description.
II. Impact
==========
A local user in the system group may gain root privileges.
III. Solutions
===============
A. Official Fix
IBM provides the following fixes:
APAR number for AIX 5.1.0: IY67812 (available approx. 03/23/05)
APAR number for AIX 5.2.0: IY67750 (available approx. 04/15/05)
APAR number for AIX 5.3.0: IY66933 (available approx. 04/15/05)
NOTE: Affected customers are urged to upgrade to 5.1.0, 5.2.0 or 5.3.0 at the latest
maintenance level.
B. Emergency Fix
Efixes are available for AIX 5.1.0, 5.2.0 and 5.3.0. The efixes can be downloaded via ftp from:
ftp://aix.software.ibm.com/aix/efixes/security/ipl_varyon_efix.tar.Z
ipl_varyon_efix.tar.Z is a compressed tarball containing this advisory, three efix
packages cleartext PGP signatures for each efix package.
Verify you have retrieved the efixes intact:
- - - --------------------------------------------
The checksums below were generated using the "sum" and "md5sum" commands and are as follows:
Filename sum md5
=====================================================================
IY67812.050209.epkg.Z 52730 11 df9cdc3bced511a2bc426edc487aec6e
IY67750.050209.epkg.Z 05037 11 d3d2e7cf6e05a092b3b292cffdd2b53c
IY66933.050209.epkg.Z 03588 12 1764bce34b7c1f47a957da5f6a9c3004
These sums should match exactly. The PGP signatures in the compressed tarball and on this advisory can also be used to verify the integrity of the various files they
correspond to. If the sums or signatures cannot be confirmed, double check the command
results and the download site address. If those are OK, contact IBM AIX Security at security-alert@austin.ibm.com and describe the discrepancy.
IMPORTANT: If possible, it is recommended that a mksysb backup of the system is created.
Verify it is both bootable, and readable before proceeding.
These efixes have not been fully regression tested; thus, IBM does not warrant the fully correct functioning of the efix. Customers install the efix and operate the
modified version of AIX at their own risk.
Efix Installation Instructions:
- - - -------------------------------
These packages use the new Emergency Fix Management Solution to install and manage efixes. More information can be found at:
http://techsupport.services.ibm.com/server/aix.efixmgmt
To preview an epkg efix installation execute the following command:
# emgr -e epkg_name -p # where epkg_name is the name of the
# efix package being previewed.
To install an epkg efix package, execute the following command:
# emgr -e epkg_name -X # where epkg_name is the name of the
# efix package being installed.
The "X" flag will expand any filesystems if required.
C. Workaround
Setting the file mode bits to 500 will allow only the root user to execute the netpmon command. This can be done by executing the following command as root:
# chmod 500 /usr/bin/netpmon
Verify that the file mode bits have been changed to 500:
# ls -la /usr/bin/netpmon
- - - -r-x------ 1 root system 83454 2003-04-09 18:48 /usr/bin/netpmon
IV. Obtaining Fixes
===================
AIX Version 5 APARs can be downloaded from:
http://www-1.ibm.com/servers/eserver/support/pseries/aixfixes.html
Security related Emergency Fixes can be downloaded from:
ftp://aix.software.ibm.com/aix/efixes/security
V. Acknowledgments
====================
This vulnerability was reported by iDEFENSE.
VI. Contact Information
========================
If you would like to receive AIX Security Advisories via email, please
visit:
https://techsupport.services.ibm.com/server/pseries.subscriptionSvcs
Comments regarding the content of this announcement can be directed to:
security-alert@austin.ibm.com
To request the PGP public key that can be used to communicate securely with the AIX
Security Team send email to security-alert@austin.ibm.com with a subject of "get key". The key can also be downloaded from a PGP Public Key Server. The key id is 0x9391C1F2.
Please contact your local IBM AIX support center for any assistance.
eServer is a trademark of International Business Machines Corporation. IBM, AIX and
pSeries are registered trademarks of International Business Machines Corporation. All other trademarks are property of their respective holders.
3.
ESB-2005.0141 -- IBM Security Advisory
Arbitrary file read vulnerability in lspath
11 February 2005
Product: lspath
Publisher: IBM
Operating System: AIX 5.2 and 5.3
Impact: Read-only Data Access
Access: Existing Account
- - --------------------------BEGIN INCLUDED TEXT--------------------
- - -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
IBM SECURITY ADVISORY
First Issued: Wed Feb 9 15:16:37 CST 2005
=========================================================================
VULNERABILITY SUMMARY
VULNERABILITY: A vulnerability in the lspath command allows any
local user to read from any file.
PLATFORMS: AIX 5.2 and 5.3.
SOLUTION: Apply the workaround, efix or APAR as described below.
THREAT: A local user can read the first work of any file.
CERT VU Number: N/A
CVE Number: N/A
=========================================================================
DETAILED INFORMATION
I. Description
===============
A vulnerability was discovered in the lspath command. This command displays information
about paths to an MultiPath I/O (MPIO) capable device. Any local user may exploit this vulnerability to read any file up to the first whitespace (tab, space or newline character) in that file. Please note that this issue cannot be exploited to read an arbitrary file in entirety nor can it be exploited to write to a file.
The command affected by this issue ships as part of the bos.rte.methods fileset. To determine if this fileset is installed, execute the following
command:
# lslpp -L bos.rte.methods
If the fileset is installed it will be listed along with its version information, state, type and a description.
II. Impact
==========
A local user may read an arbitrary file up to the first whitespace. This vulnerability may be exploited to access information that a user would not otherwise be able to read.
III. Solutions
===============
A. Official Fix
IBM provides the following fixes:
APAR number for AIX 5.2.0: IY67457 (available approx. 04/15/05)
APAR number for AIX 5.3.0: IY67655 (available approx. 04/15/05)
NOTE: Affected customers are urged to upgrade to 5.1.0, 5.2.0 or 5.3.0 at the latest maintenance level.
B. Emergency Fix
Efixes are available for AIX 5.1.0, 5.2.0 and 5.3.0. The efixes can be downloaded via ftp from:
ftp://aix.software.ibm.com/aix/efixes/security/lspath_efix.tar.Z
lspath_efix.tar.Z is a compressed tarball containing this advisory, three efix packages cleartext
PGP signatures for each efix package.
Verify you have retrieved the efixes intact:
- - - ---------------------------------------------
The checksums below were generated using the "sum" and "md5sum" commands and are as follows:
Filename sum md5
=====================================================================
IY67457.050209.epkg.Z 09497 36 a4dde2b6e62efce8fae2a1fcd861ca07
IY67655.050209.epkg.Z 21676 37 76b49f71ac3a55a40412fd117f98df92
These sums should match exactly. The PGP signatures in the compressed tarball and on this advisory can also be used to verify the integrity of the various files they correspond to. If the sums or signatures cannot be confirmed, double check the command results and the download site address. If those are OK, contact IBM AIX Security at security-alert@austin.ibm.com and describe the discrepancy.
IMPORTANT: If possible, it is recommended that a mksysb backup of the system is created. Verify it is both bootable, and readable before proceeding.
These efixes have not been fully regression tested; thus, IBM does not warrant the fully correct functioning of the efix. Customers install the efix and operate the modified version of AIX at
their own risk.
Efix Installation Instructions:
- - - -------------------------------
These packages use the new Emergency Fix Management Solution to install and manage efixes. More
information can be found at:
http://techsupport.services.ibm.com/server/aix.efixmgmt
To preview an epkg efix installation execute the following command:
# emgr -e epkg_name -p # where epkg_name is the name of the
# efix package being previewed.
To install an epkg efix package, execute the following command:
# emgr -e epkg_name -X # where epkg_name is the name of the
# efix package being installed.
The "X" flag will expand any filesystems if required.
C. Workaround
Setting the file mode bits to 500 will allow only the root user to execute the lspath command. This can be done by executing the following command as
root:
# chmod 500 /usr/sbin/lspath
Verify that the file mode bits have been changed to 500:
# ls -la /usr/sbin/lspath
- - - -r-x------ 1 root system 63894 2003-06-23 13:59 /usr/sbin/lspath
IV. Obtaining Fixes
===================
AIX Version 5 APARs can be downloaded from:
http://www-1.ibm.com/servers/eserver/support/pseries/aixfixes.html
Security related Emergency Fixes can be downloaded from:
ftp://aix.software.ibm.com/aix/efixes/security
V. Acknowledgments
====================
This vulnerability was reported by iDEFENSE.
VI. Contact Information
========================
If you would like to receive AIX Security Advisories via email, please
visit:
https://techsupport.services.ibm.com/server/pseries.subscriptionSvcs
Comments regarding the content of this announcement can be directed to:
security-alert@austin.ibm.com
To request the PGP public key that can be used to communicate securely with the AIX
Security Team send email to security-alert@austin.ibm.com with a subject of "get key". The key can also be downloaded from a PGP Public Key Server. The key id is 0x9391C1F2.
Please contact your local IBM AIX support center for any assistance.
eServer is a trademark of International Business Machines Corporation. IBM, AIX and
pSeries are registered trademarks of International Business Machines Corporation. All other trademarks are property of their respective holders. ___________________________
- ----------------------------------------------------------------------------------
For additional information or assistance, please contact the HELP Desk by
telephone or Not Protectively Marked information may be sent via
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Outside of Office Hours:
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Tel: +44 (0) 870 487 0748 and follow the prompts
- ----------------------------------------------------------------------------------
UNIRAS wishes to acknowledge the contributions of IBM for the information
contained in this Briefing.
- ----------------------------------------------------------------------------------