________________________________________________________________________________
Sun Microsystems, Inc. Security Bulletin
Bulletin Number: #00157
Date: October 28, 1997
Cross-Ref:
Title: sysdef
________________________________________________________________________________
Permission is granted for the redistribution of this Bulletin, so long as
the Bulletin is not edited and is attributed to Sun Microsystems. Portions
may also be excerpted for re-use in other security advisories so long as
proper attribution is included.
Any other use of this information without the express written consent of
Sun Microsystems is prohibited. Sun Microsystems expressly disclaims all
liability for any misuse of this information by any third party.
________________________________________________________________________________
1. Bulletins Topics
Sun announces the release of patches for Solaris 2.5.1, 2.5, 2.4, 2.3,
(SunOS 5.5.1, 5.5, 5.4, 5.3) which relate to a vulnerability in sysdef.
Sun strongly recommends that you install the patches listed in section 4
immediately on systems running SunOS 5.5.1, 5.5, 5.4, and 5.3.
2. Who is Affected
Vulnerable: SunOS versions 5.5.1, 5.5.1_x86, 5.5, 5.5_x86,
5.4, 5.4_x86, 5.3
The vulnerability is fixed in Solaris 2.6.
3. Understanding the Vulnerability
The sysdef command displays the current system definition, listing hardware
devices, pseudo devices, system devices, loadable modules, and values of
selected kernel tunable parameters. This vulnerability, if exploited,
allows unprivileged users to read kernel memory which may contain sensitive
information such as unencrypted passwords. Attackers can subsequently use
the information to gain root access.
4. List of Patches
The vulnerability in sysdef is fixed by the following patches:
OS version Patch ID
__________ ________
SunOS 5.5.1 105092-01
SunOS 5.5.1_x86 105093-01
SunOS 5.5 105101-01
SunOS 5.5_x86 105102-01
SunOS 5.4 105099-01
SunOS 5.4_x86 105100-01
SunOS 5.3 105205-01
5. Checksum Table
The checksum table below shows the BSD checksums (SunOS 5.x: /usr/ucb/sum),
SVR4 checksums (SunOS 5.x: /usr/bin/sum), and the MD5 digital signatures
for the above-mentioned patches that are available from:
<URL:ftp://sunsolve1.sun.com/pub/patches/patches.html>
These checksums may not apply if you obtain patches from your answer
centers.
File Name BSD SVR4 MD5
_______________ _________ __________ ________________________________
105092-01.tar.Z 18806 104 64648 207 CD282DB673136EE05FB63A59ADF04089
105093-01.tar.Z 29154 103 12815 206 521E2523DFCF6EB7476D40FAE17B4990
105101-01.tar.Z 10425 103 62933 205 E0F25757D958C4FF74B44471B6659532
105102-01.tar.Z 45898 102 45444 204 1E4953774F47C899EB25ACE8D0ED2B18
105099-01.tar.Z 64861 92 23604 183 E35540AC8BFCACED246F11A45E7BE55C
105100-01.tar.Z 61681 91 12641 182 F1C568E5D830D465B01B9892E19DDDAA
105205-01.tar.Z 65019 92 2573 183 951AB33FB3680E0F06C2182D34536725
_______________________________________________________________________________
Sun thanks Marko Laakso (University of Oulu, Finland) for his assistance in
this matter.
_______________________________________________________________________________
APPENDICES
A. Patches listed in this bulletin are available to all Sun customers via
World Wide Web at:
<URL:ftp://sunsolve1.sun.com/pub/patches/patches.html>
Customers with Sun support contracts can also obtain patches from local
Sun answer centers and SunSITEs worldwide.
B. Sun security bulletins are available via World Wide Web at:
<URL:http://sunsolve1.sun.com/sunsolve/secbulletins>
C. Sun Security Coordination Team's PGP key is available via World Wide Web
at:
<URL:http://sunsolve1.sun.com/sunsolve/secbulletins/SunSCkey.txt>
D. To report or inquire about a security problem with Sun software, contact
one or more of the following:
- Your local Sun answer centers
- Your representative computer security response team, such as CERT
- Sun Security Coordination Team. Send email to:
security-alert@sun.com
E. To receive information or subscribe to our CWS (Customer Warning System)
mailing list, send email to:
security-alert@sun.com
with a subject line (not body) containing one of the following commands:
Command Information Returned/Action Taken
_______ _________________________________
help An explanation of how to get information
key Sun Security Coordination Team's PGP key
list A list of current security topics
query [topic] The email is treated as an inquiry and is forwarded to
the Security Coordination Team
report [topic] The email is treated as a security report and is
forwarded to the Security Coordinaton Team. Please
encrypt sensitive mail using Sun Security Coordination
Team's PGP key
send topic A short status summary or bulletin. For example, to
retrieve a Security Bulletin #00138, supply the
following in the subject line (not body):
send #138
subscribe Sender is added to our mailing list. To subscribe,
supply the following in the subject line (not body):
subscribe cws your-email-address
Note that your-email-address should be substituted
by your email address.
unsubscribe Sender is removed from the CWS mailing list.
________________________________________________________________________________
-----BEGIN PGP SIGNATURE-----
Version: 2.6.2
iQCVAwUBNFVP/7dzzzOFBFjJAQFjugQAhzkz8EQ1t1Nn7I+RlFG9Yo/Fh//d6hQu
O8IqV0CPDRKyEidUI2VGrzdzEoZ6z9xizUPpZvm2mgNVwc02y1hVsmHZVQS+mnDH
OHIacHgPQ4kPEpBuKUql7//aYIkhEhpy+BZd0QfCYidLIKRIQklcit2Nq35C008J
gqgb5utcd/k=
=KALb
-----END PGP SIGNATURE-----