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Sun Microsystems, Inc. Security Bulletin
Bulletin Number: #00158
Date: October 28, 1997
Cross-Ref: CERT CA-97.06
Title: rlogin
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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.
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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), SunOS 4.1.4 and 4.1.3_U1 which relate to a
vulnerability in rlogin.
Sun strongly recommends that you install the patches listed in section 4
immediately on systems running SunOS 5.5.1, 5.5, 5.4, 5.3, 4.1.4, and
4.1.3_U1.
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, 4.1.4, 4.1.3_U1
The vulnerability is fixed in Solaris 2.6.
3. Understanding the Vulnerability
The rlogin program establishes a remote login session. Due to insufficient
bounds checking on arguments supplied to rlogin, it is possible to
overwrite the internal data space of the rlogin program. As rlogin is
setuid root, this vulnerability may be exploited to gain root access.
4. List of Patches
The vulnerability in rlogin is fixed by the following patches:
OS version Patch ID
__________ ________
SunOS 5.5.1 104650-02
SunOS 5.5.1_x86 104651-02
SunOS 5.5 104669-02
SunOS 5.5_x86 104670-02
SunOS 5.4 105254-01
SunOS 5.4_x86 105255-01
SunOS 5.3 105253-01
SunOS 4.1.4 105260-01
SunOS 4.1.3_U1 105259-01
5. Checksum Table
The checksum table below shows the BSD checksums (SunOS 4.1.x: /bin/sum;
SunOS 5.x: /usr/ucb/sum), SVR4 checksums (SunOS 4.1.x: /usr/5bin/sum;
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
_______________ _________ __________ ________________________________
104650-02.tar.Z 13535 97 28313 194 09633D56EE7957B583EA7B56868C041A
104651-02.tar.Z 63944 97 59194 194 62FC76D27F05D9088734AFB2FBA728B4
104669-02.tar.Z 50300 97 53035 194 603DBCACC7E43DB308F6191BC9FA5D69
104670-02.tar.Z 53991 97 53938 193 2AAB302E10CF860B4009E1CF873B1AE7
105254-01.tar.Z 16467 86 40933 172 6C1C5E4A63C07B69E79CFE31308703F0
105255-01.tar.Z 61095 86 58884 172 CE00AF98291E033BEE5E49C049AD6162
105253-01.tar.Z 12622 86 40936 172 382904D4F14E247D17F9E59F1424480D
105260-01.tar.Z 06896 11 12684 22 191C9F074855631D4CCCD136FA267DEE
105259-01.tar.Z 18628 11 19352 22 CCC5434C6F71AE02C5B456CE4C8BDBBE
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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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mailing list, send email to:
security-alert@sun.com
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