From: Boren, Rich \(SSRT\) (Rich.Boren@COMPAQ.com)
Date: Tue Apr 16 2002 - 16:43:46 EDT
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
SECURITY BULLETIN: (SSRT-541) Tru64 UNIX CDE, NFS and NIS related
Potential Security Vulnerabilities
Posted at: http://ftp.support.compaq.com/patches/.new/security.shtml
NOTICE: There are no restrictions for distribution of this Bulletin
provided that it remains complete and intact.
RELEASE DATE: APRIL, 2002
SEVERITY: See individual sections of PROBLEM SUMMARY
SOURCE: Compaq Computer Corporation
Compaq Services
Software Security Response Team
PROBLEM SUMMARY:
A number of potential security vulnerabilities have recently been
reported for CDE, libc, and NFS released with Tru64 UNIX V4.0F,
V4.0G, V5.0A, V5.1 and V5.1A, where under certain circumstances,
system integrity may be compromised by a malicious user.
- CDE (severity high)
o dtaction potential buffer overflow (SSRT0752U)
o ttsession potential buffer overflow (SSRT0753U)
o dtprintinfo potential buffer overflow (SSRT0757U, SSRT0788U)
o dtspcd potential buffer overflow. (SSRT0782U)
x-ref: (CVE CVE-2001-0803, CERT CA-2001-31, CA-2002-01)
Compaq has not been able to reproduce the problem identified
in the CERT advisory for any Compaq OS. However with the
information available, we are including a code change for
dtspcd that will further reduce any potential buffer
overflow vulnerability.
Buffer overflow attacks are commonly used to attempt to
subvert the function of a privileged program and
possibly execute commands at the elevated privileges if
the program file has the set uid privilege.
- Environment Variable LANG and LOCPATH (severity high)
o libc (SSRT0771U)
A libc environment variable corruption with LANG and
LOCPATH , may cause a potential buffer overflow
- NIS Network Information Service (severity moderate)
o ypbind may core during nmap portscan (SSRT0781U)
Core: A file that is a copy of the contents of a
processes memory, that can be produced when that
process is aborted by certain kinds of internal error.
- NFS Network File System (severity moderate) (V4.0g pk3/BL17 &
V5.0a pk3/BL17 only)
o NFS Potential packet flood denial of service (DoS) (SSRT1-26)
A remote user with malicious intent may cause a potential
denial of service (DoS) with portmap server.
Network DoS attacks make computer systems inaccessible by
flooding a service, server or network with useless
traffic.
VERSIONS IMPACTED:
TRU64 UNIX V5.1a PK1(BL1),
V5.1 PK4(BL18),
V5.0a PK3(BL17),
V4.0g PK3(BL17),
V4.0f PK7(BL18).
RESOLUTION:
The potential vulnerabilities noted below have been corrected and
patches are now available for TRU64 UNIX.
Compaq strongly recommends that systems be updated to at least the
prerequisite version of TRU64 UNIX and PK release and then install
the previously released security patches identified in the security
advisory bulletin
http://ftp.support.compaq.com/patches/.new/html/SSRT0742U-59U.shtml
prior to installing these Early Release Patches.
Early Release Patches (ERPs) are available for all supported
versions of Tru64 UNIX and will be available in the next aggregate
patch kits for each supported product version. Until these
Tru64 UNIX fixes are generally available in mainstream patch kits,
Compaq recommends use of the following Early Release Patches (ERP)
kits:
Tru64 UNIX 5.1A:
Prerequisite: 5.1A with Patch Kit 1 (BL1) installed
ERP Kit Name: T64V51AB1-C0011201-13438-ES-20020228.tar
Kit Location: <http://ftp1.support.compaq.com/public/unix/v5.1a/>
Tru64 UNIX 5.1:
Prerequisite: 5.1 with Patch Kit 4 (BL18) installed
ERP Kit Name: T64V51B18-C0102001-13428-ES-20020228.tar
Kit Location: <http://ftp1.support.compaq.com/public/unix/v5.1/>
Tru64 UNIX 5.0A:
Prerequisite: 5.0A with Patch Kit 3 (BL17) installed
ERP Kit Name: T64V50AB17-C0018301-13396-ES-20020226.tar
Kit Location: <http://ftp1.support.compaq.com/public/unix/v5.0a/>
Tru64 UNIX 4.0G:
Prerequisite: 4.0G with Patch Kit 3 (BL17) installed
ERP Kit Name: T64V40GB17-C0010301-13400-ES-20020226.tar
Kit Location: <http://ftp1.support.compaq.com/public/unix/v4.0g/>
Tru64 UNIX 4.0F:
Prerequisite: 4.0F with Patch Kit 7 (BL18) installed
ERP Kit Name: DUV40FB18-C0067301-13427-ES-20020228.tar
Kit Location: <http://ftp1.support.compaq.com/public/unix/v4.0f/>
MD5 and SHA1 checksums are available in the public patch notice for
the ERP kits. You may find information on how to verify MD5 and SHA1
checksums at:
http://www.support.compaq.com/patches/whats-new.shtml
NOTE: (1) Please review the README file(s) for each patch prior
to installation.
After completing the update, Compaq strongly recommends that
you perform an immediate backup of your system disk so that
any subsequent restore operations begin with updated software.
Otherwise, you must reapply the update after a future restore
operation. Also, if at some future time, you upgrade your system
to a later patch release or version release, you may need to
re-apply the appropriate ERP identified below.
SUPPORT:
For further information, contact your normal Compaq Support channel.
SUBSCRIBE:
To subscribe to automatically receive future Security
Advisories from the Compaq's Software Security Response Team via
electronic mail:
http://www.support.compaq.com/patches/mailing-list.shtml
REPORT:
To report a potential security vulnerability with any Compaq
supported product, send email mailto:security-ssrt@compaq.com
or mailto:sec-alert@compaq.com
Compaq appreciates your cooperation and patience. As always,
Compaq urges you to periodically review your system management
and security procedures. Compaq will continue to review and
enhance the security features of its products and work with
our customers to maintain and improve the security and integrity
of their systems.
"Compaq is broadly distributing this Security Bulletin in order to
bring to the attention of users of the affected Compaq products the
important security information contained in this Bulletin.
Compaq recommends that all users determine the applicability of
this information to their individual situations and take appropriate
action. Compaq does not warrant that this information is
necessarily accurate or complete for all user situations and,
consequently, Compaq will not be responsible for any damages
resulting from user's use or disregard of the information provided
in this Bulletin."
Copyright 2002 Compaq Information Technologies Group, L.P.
Compaq shall not be liable for technical or editorial errors
or omissions contained herein. The information in this document
is subject to change without notice. Compaq and the names of
Compaq products referenced herein are, either, trademarks
and/or service marks or registered trademarks and/or service
marks of Compaq Information Technologies Group, L.P. Other product
and company names mentioned herein may be trademarks and/or service
marks of their respective owners.
-----BEGIN PGP SIGNATURE-----
Version: PGP 7.0.1
iQA/AwUBPLyNcTnTu2ckvbFuEQKxVwCffKREQDX1SHgxvBrBtinQd8GgfcMAoKhE
mNQusGPd2QqmMrO2TH6Ua2IK
=c0Wv
-----END PGP SIGNATURE-----
This archive was generated by hypermail 2.1.7 : Sat Apr 12 2008 - 10:48:38 EDT