-----BEGIN PGP SIGNED MESSAGE----- [ For Public Release ] __________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN SunOS, Solaris ifconfig ioctls Vulnerability August 25, 1997 23:00 GMT Number H-99 ______________________________________________________________________________ PROBLEM: A vulnerability exists in the ifconfig command which assigns addresses to network interfaces and configures network interface parameters. 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: This vulnerability, if exploited, allows non-root attackers to use ifconfig to configure network interface parameters for any network interface on a 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: #00152 Date: August 25, 1997 Cross-Ref: Title: Vulnerability in ifconfig ioctls ______________________________________________________________________________ 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 ifconfig ioctls. 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, 5.3 Not vulnerable: All other supported versions of SunOS. The vulnerability is fixed in Solaris 2.6. 3. Understanding the Vulnerability The command ifconfig assigns addresses to network interfaces and configures network interface parameters. The use of ifconfig to configure network interface parameters is restricted to superusers. This vulnerability, if exploited, allows non-root attackers to use ifconfig to configure network interface parameters for any network interface on a system. 4. List of Patches The vulnerability in ifconfig ioctls is fixed by the following patches: OS version Patch ID __________ ________ SunOS 5.5.1 103640-09 SunOS 5.5.1_x86 103641-09 SunOS 5.5 103093-14 SunOS 5.5_x86 103094-11 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: These checksums may not apply if you obtain patches from your answer centers. File Name BSD SVR4 MD5 _______________ _________ __________ ________________________________ 103640-09.tar.Z 08357 3832 24559 7663 C79A3D0E0CC610638C60BF25DB625559 103641-09.tar.Z 10615 825 9869 1649 B64D85F18E8B74E0DE251BCAA0AD10DE 103093-14.tar.Z 51571 2293 26450 4586 4EA9F527F219C836740DF51C7374F5E4 103094-11.tar.Z 03030 802 64820 1604 75AB9D22CDB03861B5CA9941752A1F57 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: 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: C. Sun Security Coordination Team's PGP key is available via World Wide Web at: 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 E. To receive information or subscribe to our CWS (Customer Warning System) mailing list, send email to: security-alert@sun.com with a subject line (not body) containing one of the following commands: Command Information Returned/Action Taken _______ _________________________________ help An explanation of how to get information key Sun Security Coordination Team's PGP key list A list of current security topics query [topic] The email is treated as an inquiry and is forwarded to the Security Coordination Team report [topic] The email is treated as a security report and is forwarded to the Security Coordinaton Team. 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To subscribe, supply the following in the subject line (not body): subscribe cws your-email-address Note that your-email-address should be substituted by your email address. unsubscribe Sender is removed from the CWS mailing list. ______________________________________________________________________________ [ 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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If you are not part of these communities, please contact your agency's response team to report incidents. Your agency's team will coordinate with CIAC. The Forum of Incident Response and Security Teams (FIRST) is a world-wide organization. A list of FIRST member organizations and their constituencies can be obtained via WWW at http://www.first.org/. This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. 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