__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Vulnerability Found In "lsmcode" Command [AIX 5.1 : Security advisories (2006.05.26)] June 2, 2006 23:00 GMT Number Q-215 ______________________________________________________________________________ PROBLEM: A vulnerability in "lsmcode" may allow local users to execute arbitrary code with root privileges. PLATFORM: AIX 5.1, 5.2 and 5.3 DAMAGE: A local user may execute arbitrary code as root. SOLUTION: Apply current patches. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. A local user may execute arbitrary code ASSESSMENT: as root. ______________________________________________________________________________ [***** Start AIX 5.1 : Security advisories (2006.05.26) *****] AIX 5.1 : Security advisories (2006.05.26) Vulnerability found in lsmcode command IBM SECURITY ADVISORY First Issued: Fri May 26 15:45:51 CDT 2006 ========================================================================== VULNERABILITY SUMMARY VULNERABILITY: A vulnerability in lsmcode may allow local users to execute arbitrary code with root privileges. PLATFORMS: AIX 5.1, 5.2 and 5.3. SOLUTION: Apply the APAR, interim fix or workaround as described below. THREAT: A local user may execute arbitrary code as root. CERT VU Number: n/a CVE Number: n/a ========================================================================= DETAILED INFORMATION I. Description =============== A vulnerability was discovered in the lsmcode command that may allow a local attacker to execute arbitrary code as the root user. The lsmcode command is used to display microcode and firmware levels of system adapters and devices. lsmcode ships as part of the bos.diag.util fileset. II. Impact ========== A local user may execute arbitrary code as the root user. III. Solutions =============== A. Official Fix IBM provides the following fixes: APAR number for AIX 5.1.0: IY85518 (available approx. 7/19/06) APAR number for AIX 5.2.0: IY88524 (available approx. 8/23/06) APAR number for AIX 5.3.0: IY85517 (available approx. 8/23/06) NOTE: Affected customers are urged to upgrade to the latest applicable Technology Level. B. Interim Fix Interm fixes will be available within the coming week. When available, the ifixes can be downloaded via ftp from aix.software.ibm.com . C. Workaround Remove Non-Root Permissions +---------------- To prevent non-root users from running the command # chmod 500 /usr/sbin/lsmcode These permissions will only allow the root user to run lsmcode. IV. Obtaining Fixes =================== AIX Version 5 APARs can be downloaded from: http://www.ibm.com/servers/eserver/support/unixservers/aixfixes.html Security related Interim Fixes can be downloaded from: ftp://aix.software.ibm.com/aix/efixes/security V. Contact Information ======================= If you would like to receive AIX Security Advisories via email, please visit: http://www14.software.ibm.com/webapp/set2/subscriptions/pqvcmjd Comments regarding the content of this announcement can be directed to: security-alert@austin.ibm.com To request the PGP public key that can be used to communicate securely with the AIX Security Team send email to security-alert@austin.ibm.com with a subject of "get key". The key can also be downloaded from a PGP Public Key Server. The key id is 0x9391C1F2. Please contact your local IBM AIX support center for any assistance. eServer is a trademark of International Business Machines Corporation. IBM, AIX and pSeries are registered trademarks of International Business Machines Corporation. All other trademarks are property of their respective holders. [***** End AIX 5.1 : Security advisories (2006.05.26) *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of IBM 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. 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