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AUSCERT External Security Bulletin Redistribution
ESB-2001.441 -- Sun Security Bulletin #209
23 October 2001
AusCERT Security Bulletin Summary
Vendor: Sun Microsystems
Operating System: Solaris/SunOS
Impact: Root Compromise
Access Required: Remote
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Sun Microsystems, Inc. Security Bulletin
Bulletin Number: #00209
Date: October 22, 2001
Cross-Ref: CERT Vulnerability Note VU#327281
The information contained in this Security Bulletin is provided "AS IS."
Sun makes no warranties of any kind whatsoever with respect to the information
contained in this Security Bulletin. ALL EXPRESS OR IMPLIED CONDITIONS,
REPRESENTATIONS AND WARRANTIES, INCLUDING ANY WARRANTY OF NON-INFRINGEMENT OR
IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE
HEREBY DISCLAIMED AND EXCLUDED TO THE EXTENT ALLOWED BY APPLICABLE LAW.
IN NO EVENT WILL SUN MICROSYSTEMS, INC. BE LIABLE FOR ANY LOST REVENUE,
PROFIT OR DATA, OR FOR DIRECT, SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL
OR PUNITIVE DAMAGES HOWEVER CAUSED AND REGARDLESS OF ANY THEORY OF LIABILITY
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THE POSSIBILITY OF SUCH DAMAGES.
If any of the above provisions are held to be in violation of applicable law,
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1. Bulletins Topics
Sun announces the release of patches for Solaris(tm) 8, 7, and
2.6 (SunOS(tm) 5.8, 5.7, and 5.6) which relate to a buffer overflow
vulnerability in rpc.yppasswdd.
Sun recommends that you install the patches listed in section 4
immediately on NIS master servers running SunOS 5.8, 5.7, and 5.6.
2. Who is Affected
Vulnerable: SunOS 5.8, 5.8_x86, 5.7, 5.7_x86, 5.6,
Not vulnerable: SunOS 5.5.1, 5.5.1_x86 and earlier
3. Understanding the Vulnerability
The rpc.yppasswdd daemon runs on all master server machines that are
set up to use NIS. The rpc.yppasswdd daemon handles password change
requests from yppasswd(1). A buffer overflow vulnerability has been
discovered in rpc.yppasswd which may be exploited by a local or a
remote attacker to gain root access on the NIS master server system.
CERT Vulnerability Note VU#327281 is available from:
4. List of Patches
The following patches are available in relation to the above problems.
OS Version Patch ID
SunOS 5.8 111596-02
SunOS 5.8_x86 111597-02
SunOS 5.7 111590-02
SunOS 5.7_x86 111591-02
SunOS 5.6 106303-03
SunOS 5.6_x86 106304-03
A. Patches listed in this bulletin are available to all Sun customers at:
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Copyright 2001 Sun Microsystems, Inc. All rights reserved. Sun,
Sun Microsystems, Solaris and SunOS are trademarks or registered trademarks
of Sun Microsystems, Inc. in the United States and other countries. This
Security Bulletin may be reproduced and distributed, provided that this
Security Bulletin is not modified in any way and is attributed to
Sun Microsystems, Inc. and provided that such reproduction and distribution
is performed for non-commercial purposes.
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