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Date: Mon, 26 Jun 2000 17:29:22 -0400 (EDT)
[ For Public Release ]
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__________________________________________________________
The U.S. Department of Energy
Computer Incident Advisory Capability
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__________________________________________________________
INFORMATION BULLETIN
Vulnerability in Linux wu-ftpd
June 26, 2000 17:00 GMT Number K-054
______________________________________________________________________________
PROBLEM: Due to improper implementation of the 'site exec' command, it
is possible to execute arbitrary code.
PLATFORM: Caldera
OpenLinux Desktop 2.3 (with wu-ftpd-2.5.0-7 and prior)
OpenLinux eServer 2.3 (with wu-ftpd-2.5.0-7 and prior)
OpenLinux eBuilder 2.3 (with wu-ftpd-2.5.0-7 and prior)
OpenLinux eDesktop 2.4 (with wu-ftpd-2.5.0-7 and prior)
Debian:
Debian GNU/Linux 2.1 (slink, potato and woody)
Red Hat
Red Hat Linux 5.2 - i386 alpha sparc
Red Hat Linux 6.2 - i386 alpha sparc
DAMAGE: This vulnerability may allow local, remote and anonymous users
to gain root privileges.
SOLUTION: Immediately apply fixes as recommended in the advisory.
______________________________________________________________________________
VULNERABILITY The risk is HIGH. The vulnerability and exploit have been
ASSESSMENT: discussed in public forums.
______________________________________________________________________________
[****** Start AusCERT Advisory ******]
http://ciac.llnl.gov/ciac/bulletins/k-054.shtml
[****** End AusCERT Advisory ******]
_______________________________________________________________________________
CIAC wishes to acknowledge the contributions of AusCERT 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 at 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 at 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-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 Vulnerability
K-051: DoS Vulnerabilities in Kerberos 4 KDC Programs
K-052: AIX cdmount Vulnerability
K-053: Linux setuid Kernel Fix
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