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[ For Public Release ]
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The U.S. Department of Energy
Computer Incident Advisory Capability
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INFORMATION BULLETIN
SunOS automounter Vulnerability
August 21, 1997 17:00 GMT Number H-98
______________________________________________________________________________
PROBLEM: A vulnerability exists in the automounter daemon automountd,
which is an RPC server that answers file system mount and
unmount requests from the autofs filesystem.
PLATFORM: Solaris 2.5.1, 2.5, 2.4, and 2.3 (SunOS versions 5.5.1,
5.5.1_x86, 5.5, 5.5_x86, 5.4, 5.4_x86, and 5.3.)
DAMAGE: Unprivileged users may exploit this vulnerability to send RPCs
to automountd to change mount options of a file system.
SOLUTION: Apply patches as listed in Section 4.
______________________________________________________________________________
VULNERABILITY Sun strongly recommends that you install the patches listed in
ASSESSMENT: section 4 immediately on systems running SunOS 5.5.1, 5.5, 5.4,
and 5.3.
______________________________________________________________________________
[ Start Sun Microsystems Advisory ]
______________________________________________________________________________
Sun Microsystems, Inc. Security Bulletin
Bulletin Number: #00151
Date: August 20, 1997
Cross-Ref:
Title: Vulnerability in automounter
______________________________________________________________________________
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, and 2.3
(SunOS 5.5.1, 5.5, 5.4, and 5.3), which relate to a vulnerability in the
automounter program.
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, and 5.3.
Not vulnerable: All other supported versions of SunOS
The vulnerability is fixed in Solaris 2.6.
3. Understanding the Vulnerability
The automounter daemon automountd is an RPC server that answers file
system mount and unmount requests from the autofs filesystem. Unprivileged
users may exploit this vulnerability to send RPCs to automountd to change
mount options of a file system.
4. List of Patches
The vulnerability in automounter is fixed by the following patches:
OS version Patch ID
__________ ________
SunOS 5.5.1 104654-03
SunOS 5.5.1_x86 104655-01
SunOS 5.5 103187-29
SunOS 5.5_x86 103188-25
SunOS 5.4 101945-50
SunOS 5.4_x86 101946-44
SunOS 5.3 101318-87
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
_______________ _________ __________ ________________________________
104654-03.tar.Z 24600 156 2056 312 B3EE8F82F04E5417ADA98FCB05E502AF
104655-01.tar.Z 44811 134 58967 267 95C4806913F7BB7184E2CE27B8FF407E
103187-29.tar.Z 47938 3240 14585 6479 D681C0BB1C4267418AEB20F56DDE7FD3
103188-25.tar.Z 07195 2880 23176 5760 6707EAB1BD10B845F535E131836F8DC5
101945-50.tar.Z 04413 10909 4073 21817 198EAAAC3D92898622351C43F87E884F
101946-44.tar.Z 10072 5540 36413 11080 92D61AD71C77F56CA1DF6038D644B4F9
101318-87.tar.Z 45783 11292 55998 22584 395AD525FD411904A3BD03E7E02EED10
______________________________________________________________________________
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
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______________________________________________________________________________
[ End Sun Microsystems Advisory ]
______________________________________________________________________________
CIAC wishes to acknowledge the contributions of Sun Microsystems, Inc. for the
information contained in this bulletin.
______________________________________________________________________________
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