__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Buffer Overrun Vulnerability in Samba Server2.2 December 11, 2002 21:00 GMT Number N-023 [Revised 12 December 2002] ______________________________________________________________________________ PROBLEM: A buffer overrun vulnerability has been discovered in Samba Server2.2. PLATFORM: Multiple vendor products might be affected when used in conjunction with the Samba Server2.2 product. DAMAGE: If exploited, the vulnerability has the potential to allow an attacker to gain root access. SOLUTION: Check with your vendor for platform-specific solutions. Samba has released Samba v2.2.7 which addresses this vulnerability found in versions 2.2.2 through 2.2.6. For more information, visit Samba's web site at: http://www.samba.org/samba/whatsnew/samba-2.2.7.html ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. Though the vulnerability has the potential ASSESSMENT: to gain root access, there is no known exploit. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/n-023.shtml ______________________________________________________________________________ [***** Start Hewlett-Packard Bulletin HPSBUX0212-230 *****] Document ID: HPSBUX0212-230 Date Loaded: 20021210 Title: SSRT2437 Sec. Vulnerability in CIFS/9000 Samba Server2 2 ----------------------------------------------------------------- Source: HEWLETT-PACKARD COMPANY SECURITY BULLETIN: HPSBUX0212-0230 Originally issued: 10 Dec 2002 SSRT2437 Sec. Vulnerability in CIFS/9000 Samba Server2.2 ----------------------------------------------------------------- NOTICE: There are no restrictions for distribution of this Bulletin provided that it remains complete and intact. The information in the following Security Bulletin should be acted upon as soon as possible. Hewlett-Packard Company will not be liable for any consequences to any customer resulting from customer's failure to fully implement instructions in this Security Bulletin as soon as possible. ------------------------------------------------------------------ PROBLEM: CIFS/9000 Server 2.2 buffer overflow vulnerability. IMPACT: Potential root access. PLATFORM: HP 9000 servers running the following CIFS Server versions: - A.01.08 - A.01.08.01 - A.01.09 SOLUTION: Update to CIFS Server 2.2 version A.01.09.01 MANUAL ACTIONS: Yes - Update to version A.01.09.01 AVAILABILITY: CIFS Server 2.2 version A.01.09.01 is currently available from: ------------------------------------------------------------------ A. Background A buffer overrun has been discovered in the HP CIFS Server version A.01.09 and earlier. There is no known exploit of this vulnerability, and the Samba Team has not been able to craft one themselves. Nevertheless, the Samba Team has judged the vulnerability significant and announced the defect and fix in their latest release. HP has integrated the fix into the latest release of CIFS Server 2.2 For additional details, see: http://www.samba.org/samba/whatsnew/samba-2.2.7.html B. Recommended solution Upgrade to CIFS Server 2.2 version A.01.09.01 which is currently available from: It is the product B8725AA, CIFS/9000 Server 2.2.c. C. To subscribe to automatically receive future NEW HP Security Bulletins from the HP IT Resource Center via electronic mail, do the following: Use your browser to get to the HP IT Resource Center page at: http://itrc.hp.com Use the 'Login' tab at the left side of the screen to login using your ID and password. Use your existing login or the "Register" button at the left to create a login, in order to gain access to many areas of the ITRC. Remember to save the User ID assigned to you, and your password. In the left most frame select "Maintenance and Support". Under the "Notifications" section (near the bottom of the page), select "Support Information Digests". To -subscribe- to future HP Security Bulletins or other Technical Digests, click the check box (in the left column) for the appropriate digest and then click the "Update Subscriptions" button at the bottom of the page. or To -review- bulletins already released, select the link (in the middle column) for the appropriate digest. To -gain access- to the Security Patch Matrix, select the link for "The Security Bulletins Archive". (near the bottom of the page) Once in the archive the third link is to the current Security Patch Matrix. Updated daily, this matrix categorizes security patches by platform/OS release, and by bulletin topic. Security Patch Check completely automates the process of reviewing the patch matrix for 11.XX systems. For information on the Security Patch Check tool, see: http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/ displayProductInfo.pl?productNumber=3DB6834AA The security patch matrix is also available via anonymous ftp: ftp://ftp.itrc.hp.com/export/patches/hp-ux_patch_matrix/ On the "Support Information Digest Main" page: click on the "HP Security Bulletin Archive". D. To report new security vulnerabilities, send email to security-alert@hp.com Please encrypt any exploit information using the security-alert PGP key, available from your local key server, or by sending a message with a -subject- (not body) of 'get key' (no quotes) to security-alert@hp.com. ------------------------------------------------------------------ (c) Copyright 2002 Hewlett-Packard Company Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein. The information in this document is subject to change without notice. Hewlett-Packard Company and the names of HP products referenced herein are trademarks and/or service marks of Hewlett-Packard Company. Other product and company names mentioned herein may be trademarks and/or service marks of their respective owners. ________________________________________________________________ -- -----End of Document ID: HPSBUX0212-230-------------------------------------- [***** End Hewlett-Packard Bulletin HPSBUX0212-230 *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Hewlett-Packard and Samba 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. CIAC is also a founding member of FIRST, the Forum of Incident Response and Security Teams, a global organization established to foster cooperation and coordination among computer security teams worldwide. CIAC services are available to DOE, DOE contractors, and the NIH. CIAC can be contacted at: Voice: +1 925-422-8193 (7x24) FAX: +1 925-423-8002 STU-III: +1 925-423-2604 E-mail: ciac@ciac.org Previous CIAC notices, anti-virus software, and other information are available from the CIAC Computer Security Archive. World Wide Web: http://www.ciac.org/ Anonymous FTP: ftp.ciac.org PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing communities receive CIAC bulletins. 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. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States Government or the University of California. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes. LAST 10 CIAC BULLETINS ISSUED (Previous bulletins available from CIAC) N-013: ISC Remote Vulnerabilities in BIND4 and BIND8 N-014: Trojan Horse tcpdump and libpcap Distributions N-015: SGI IRIX lpd Daemon Vulnerabilities via sendmail and dns N-016: Buffer Overrun in Microsoft Data Access Components (MDAC) N-017: Cisco PIX Multiple Vulnerabilities N-018: Microsoft Cumulative Patch for Internet Explorer N-019: Samba Encrypted Password Buffer Overrun Vulnerability N-020: Red Hat Multiple Vulnerabilities in KDE N-021: Cumulative Patch for Internet Explorer N-022: Red Hat Updated wget packages fix directory traversal bug