From ciac@tholia.llnl.gov Sat May 2 14:33:52 1998 From: CIAC Mail User To: ciac-bulletin@tholia.llnl.gov Date: Fri, 1 May 1998 08:23:24 -0700 (PDT) Subject: CIAC Bulletin I-048: SunOS mountd Vulnerability [ For Public Release ] -----BEGIN PGP SIGNED MESSAGE----- __________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN SunOS mountd Vulnerability April 29, 1998 21:00 GMT Number I-048 ______________________________________________________________________________ PROBLEM: A vulnerability has been identified in mountd, an RPC server that handles the NFS file system mount requests. PLATFORM: SunOS 5.6, 5.6_x86, 5.5.1, 5.5.1_x86, 5.5, 5.5_x86, 5.4, 5.4_x86, and 5.3. DAMAGE: If exploited, this vulnerability may allow an attacker to obtain information about any file that exists on the NFS server even though the file in question is not a part of the NFS exported file system. SOLUTION: Apply patches listed below in Section 4. ______________________________________________________________________________ VULNERABILITY Sun Microsystems HIGHLY recommends that the patches be applied ASSESSMENT: as soon as possible. ______________________________________________________________________________ [ Start Sun Microsystems Advisory..] ______________________________________________________________________________ Sun Microsystems, Inc. Security Bulletin Bulletin Number:#00168 Date: April 29, 1998 Cross-Ref: Title: mountd ______________________________________________________________________________ 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 ARISING OUT OF THE USE OF OR INABILITY TO USE THE INFORMATION CONTAINED IN THIS SECURITY BULLETIN, EVEN IF SUN MICROSYSTEMS, INC. HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. If any of the above provisions are held to be in violation of applicable law, void, or unenforceable in any jurisdiction, then such provisions are waived to the extent necessary for this disclaimer to be otherwise enforceable in such jurisdiction. ______________________________________________________________________________ 1. Bulletins Topics Sun announces the release of patches for Solaris(tm) 2.6, 2.5.1, 2.5, 2.4, and 2.3 (SunOS(tm) 5.6, 5.5.1, 5.5, 5.4, 5.3), which relate to a vulnerability in rpc.mountd. Sun recommends that you install the patches listed in section 4 immediately on systems running SunOS 5.6, 5.5.1, 5.5, 5.4, and 5.3. 2. Who is Affected Vulnerable: SunOS 5.6, 5.6_x86, 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. 3. Understanding the Vulnerability mountd is an RPC server that handles NFS file system mount requests. A vulnerability has been discovered with mountd which, if exploited, allows the attacker to obtain information about any file that exists on the NFS server even though the file in question is not a part of the NFS exported file system. 4. List of Patches The following patches are available in relation to the above problem. SunOS Patch ID _____ _________ SunOS 5.6 105615-03 SunOS 5.6_x86 105616-03 SunOS 5.5.1 104220-03 SunOS 5.5.1_x86 104221-03 SunOS 5.5 104223-02 SunOS 5.5_x86 104224-02 SunOS 5.4 102685-02 SunOS 5.4_x86 102686-02 SunOS 5.3 102654-02 ______________________________________________________________________________ APPENDICES A. Patches listed in this bulletin are available to all Sun customers via World Wide Web at: B. Checksums for the patches listed in this bulletin are available via World Wide Web at: C. Sun security bulletins are available via World Wide Web at: D. Sun Security Coordination Team's PGP key is available via World Wide Web at: E. 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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. [ End Sun Microsystems Advisory..] ______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Sun Microsystems, Inc. for the information contained in this bulletin. ______________________________________________________________________________ CIAC, the Computer Incident Advisory Capability, is the computer security incident response team for the U.S. Department of Energy (DOE) and the emergency backup response team for the National Institutes of Health (NIH). CIAC is located at the Lawrence Livermore National Laboratory in Livermore, California. 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