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AUSCERT External Security Bulletin Redistribution
ESB-2001.205 -- Sun Security Bulletin #00202
16 May 2001
AusCERT Security Bulletin Summary
Product: Solaris (Intel Platform Edition)
Vendor: Sun Microsystems
Operating System: Solaris
Impact: Increased Privileges
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Sun Microsystems, Inc. Security Bulletin
Bulletin Number: #00202
Date: May 15, 2001
Title: i386 syscalls
The information contained in this Security Bulletin is provided "AS IS."
Sun makes no warranties of any kind whatsoever with respect to the information
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1. Bulletins Topics
This issue is only present on the Intel Platform Edition of
Sun announces the release of patches for Intel Platform Editions
of Solaris(tm) 8, 7, and 2.6 (SunOS(tm) 5.8_x86, 5.7_x86, and 5.6_x86)
which relate to a vulnerability in user-supplied arguments to a syscall
on i386 platforms.
Sun recommends that you install the patches listed in section 4
immediately on systems running SunOS 5.8_x86, 5.7_x86, and 5.6_x86.
or Trusted Solaris 8_x86 and 7_x86.
2. Who is Affected
Vulnerable: Intel Platform Edition of Solaris 8, 7,
and 2.6 (SunOS 5.8_x86, 5.7_x86, and 5.6_x86).
Intel Platform Edition of Trusted Solaris 8
Not vulnerable: All SPARC Platform Editions of Solaris and
Intel Platform Editions of Solaris prior
3. Understanding the Vulnerability
The Intel i386 architecture supports a protection and segmentation
model which allows different levels of privilege. Carefully
constructed arguments could allow access to higher privilege than
intended which could be used to control arbitrary addresses in kernel
4. List of Patches
The following patches are available in relation to the above problems.
OS Version Patch ID
SunOS 5.8_x86 108529-07
SunOS 5.7_x86 106542-16
SunOS 5.6_x86 105182-27 (Scheduled availability June 18, 2001)
TS8_x86 110338-02 (available soon)
TS7_x86 109597-05 (available soon)
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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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