-----BEGIN PGP SIGNED MESSAGE----- [ For Public Release ] __________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN SunOS Vulnerability in ps (Update to Bulletin H-59, Buffer Overflow Vulnerabilities (ps) August 13, 1997 19:00 GMT Number H-94 ______________________________________________________________________________ PROBLEM: A vulnerability has been identified in the ps program. PLATFORM: All Solaris 2.x, SunOS 5.x platforms. DAMAGE: This vulnerability may allow local users to gain root privileges. SOLUTION: Apply patches listed below. ______________________________________________________________________________ VULNERABILITY Exploit information involving this vulnerability has been made ASSESSMENT: publicly available. Sun STRONGLY RECOMMENDS that you install the patches immediately. ______________________________________________________________________________ [ Start Sun Microsystems Advisory ] ______________________________________________________________________________ Sun Microsystems, Inc. Security Bulletin Bulletin Number: #00149 Date: August 12, 1997 Cross-Ref: AUSCERT 97.17 Title: Vulnerability in ps ______________________________________________________________________________ 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 the ps program. 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. Exploit information is publicly available. 2. Who is Affected Vulnerable: SunOS versions 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 The vulnerability is fixed in the upcoming release of Solaris. 3. Understanding the Vulnerability The ps command prints information about active processes on a system. Due to insufficient bounds checking on arguments supplied to ps, it is possible to overwrite the internal data space of the ps program. As ps is setuid root, this vulnerability may be exploited by users on a system to gain root access. 4. List of Patches The vulnerability in ps is fixed by the following patches: OS version Patch ID __________ ________ SunOS 5.5.1 105050-01 SunOS 5.5.1_x86 105051-01 SunOS 5.5 105052-01 SunOS 5.5_x86 105053-01 SunOS 5.4 102711-02 SunOS 5.4_x86 102712-02 SunOS 5.3 101545-03 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 _______________ _________ __________ _______________________________ 105050-01.tar.Z 40975 131 26675 261 9E75E08487BAAAC785735188F09BD1A 105051-01.tar.Z 34192 132 34975 264 612A6C200D9BA69087FCD3EBA6DF3B2 105052-01.tar.Z 37362 131 3540 261 41EE88EBC09B3E90E4FAEAA7E59E818 105053-01.tar.Z 38180 126 31988 252 D57C2E934BAEE887535CBDB6E88D723 102711-02.tar.Z 12693 107 22447 214 DE783A43205F1290E8CCBEA6A313EDF 102712-02.tar.Z 16617 103 32208 205 DA1C0188D437E30934182CC23A648FC 101545-03.tar.Z 46772 107 49688 214 12CF86B80340842421DD284DAC7FDB0 ______________________________________________________________________________ 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. 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 D. 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 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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World Wide Web: http://ciac.llnl.gov/ Anonymous FTP: ciac.llnl.gov (198.128.39.53) Modem access: +1 (510) 423-4753 (28.8K baud) +1 (510) 423-3331 (28.8K baud) CIAC has several self-subscribing mailing lists for electronic publications: 1. CIAC-BULLETIN for Advisories, highest priority - time critical information and Bulletins, important computer security information; 2. CIAC-NOTES for Notes, a collection of computer security articles; 3. SPI-ANNOUNCE for official news about Security Profile Inspector (SPI) software updates, new features, distribution and availability; 4. SPI-NOTES, for discussion of problems and solutions regarding the use of SPI products. Our mailing lists are managed by a public domain software package called Majordomo, which ignores E-mail header subject lines. 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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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LAST 10 CIAC BULLETINS ISSUED (Previous bulletins available from CIAC) H-84: Windows NT NtOpenProcessToken Vulnerability H-85: INN News Server Vulnerabilities H-86: ld.so Vulnerability H-87: HP-UX rlogin Vulnerability H-88: SGI IRIX talkd Vulnerability H-89: SunSO talkd Buffer Overrun Vulnerability H-90: SunOS, Solaris NIS+ Vulnerability H-91: HP-UX Large UID's and GID's Vulnerability H-92: HP-UX X11/Motif Lib & Novell Netware Vulerabilities H-93: SGI IRIX ordist Buffer Overrun Vulnerability -----BEGIN PGP SIGNATURE----- Version: 4.0 Business Edition iQCVAwUBM/IuornzJzdsy3QZAQEIbgQAy3zqa3mTEhP6gHREraA+c00EzpiERo24 +YCgE6/tk9RrgfDVDvXPeVcDj62cVkybxqALG073SPzMWWV13xgwSfiboRRRRaii SBKB3sFdbcYWl13Rhm2Vqd+ZwzptQ4dE68bImyqd7lLNWKpzjUlEYlrXUrDqCHB1 HDhZYndEGkY= =jqsp -----END PGP SIGNATURE-----