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              AUSCERT External Security Bulletin Redistribution
                             
                     ESB-2000.153 -- CIAC Bulletin K-052
                          AIX cdmount Vulnerability
                                26 June 2000

===========================================================================

	AusCERT Security Bulletin Summary
	---------------------------------

Product:		cdmount
Vendor:			IBM
Operating System:	AIX
Platform:		N/A

Impact:			Root Compromise
			
Access Required:	Local

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             __________________________________________________________

                       The U.S. Department of Energy
                    Computer Incident Advisory Capability
                           ___  __ __    _     ___
                          /       |     /_   /
                          \___  __|__  /     \___
             __________________________________________________________

                             INFORMATION BULLETIN

                           AIX cdmount Vulnerability

June 21, 2000 21:00 GMT                                           Number K-052
______________________________________________________________________________
PROBLEM:       The cdmount program allows regular users to mount CD-ROM 
               filesystems. A malicious user could execute cdmount giving 
               commands containing shell metacharacters. 
PLATFORM:      AIX systems with the LPP UMS.objects 2.3.0.0 and below 
               installed.
DAMAGE:        A malicious user can run arbitrary commands, as root, through 
               shell metacharacter command manipulation. 
SOLUTION:      IBM is currently working on the issue in APAR 4.3x: IY10903 
               (Authorized Problem Analysis Report). Apply one of the 
               temporary fixes, as suggested by the advisory. 
______________________________________________________________________________
VULNERABILITY  The risk is MEDIUM. The capability currently exists for root 
ASSESSMENT:    command execution. 
______________________________________________________________________________

http://ciac.llnl.gov/ciac/bulletins/k-052.shtml
_______________________________________________________________________________

CIAC wishes to acknowledge the contributions of Internet Security Systems (ISS) 
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
    FAX:      +1 925-423-8002
    STU-III:  +1 925-423-2604
    E-mail:   ciac@llnl.gov

For emergencies and off-hour assistance, DOE, DOE contractor sites,
and the NIH may contact CIAC 24-hours a day. During off hours (5PM -
8AM PST), use one of the following methods to contact CIAC:

    1.  Call the CIAC voice number 925-422-8193 and leave a message, or

    2.  Call 888-449-8369 to send a Sky Page to the CIAC duty person or

    3.  Send e-mail to 4498369@skytel.com, or

    4.  Call 800-201-9288 for the CIAC Project Leader.

Previous CIAC notices, anti-virus software, and other information are
available from the CIAC Computer Security Archive.

   World Wide Web:      http://www.ciac.org/
                        (or http://ciac.llnl.gov -- they're the same machine)
   Anonymous FTP:       ftp.ciac.org
                        (or ciac.llnl.gov -- they're the same machine)
   Modem access:        +1 (925) 423-4753 (28.8K baud)
                        +1 (925) 423-3331 (28.8K baud)

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)

K-041: Denial of Service and File Reading Vulnerabilities 
K-042: Microsoft "Office 2000 UA Control" Vulnerability 
K-043: Buffer Overrun Vulnerabilities in Kerberos 
K-044: Microsoft: Vulnerabilities in Internet Explorer 
K-045: SGI Vulnerability in infosrch.cgi 
K-046: 386-BSD Based Operating Systems - IPCS Vulnerability
K-048: Permissions Problems with FrontPage Extensions 
K-049: Microsoft IE "SSL Certificate Validation" Vulnerability
K-050: nxt.bind.8.2.x.overflow
K-051: DOS.Vulnerabilities.Kerberos.4.KDC.Programs

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