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d-13.unix-wuarchive-ftp-daemon

d-13.unix-wuarchive-ftp-daemon
Posted Sep 23, 1999

d-13.unix-wuarchive-ftp-daemon

systems | unix
SHA-256 | afca02b8f4cb3ef603746681c90ff4961f21d94aa2c17df9cc9d2f9d28ba5f42

d-13.unix-wuarchive-ftp-daemon

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                          RESTRICTIONS: NONE 
_____________________________________________________
The Computer Incident Advisory Capability
___ __ __ _ ___
/ | / \ /
\___ __|__ /___\ \___
_____________________________________________________
ADVISORY NOTICE

wuarchive FTP daemon vulnerability

April 09, 1993, 1030 PDT Number D-13
__________________________________________________________________________
PROBLEM: The wuarchive FTP daemon allows unauthorized access.
PLATFORM: UNIX systems running the wuarchive FTP daemon.
DAMAGE: Unauthorized access to the system.
SOLUTION: Disable daemon, then patch or install new version.
__________________________________________________________________________
Critical Facts about wuarchive FTP Daemon Vulnerability


CIAC has learned that Washington University's wuarchive FTP server
contains a serious security vulnerability, allowing any user (remote or
local) to gain access with the privileges of any user on the system,
including root. If you are running any version of the wuarchive server
prior to April 8, 1993, CIAC recommends that you disable it
immediately, then either apply the patch, or replace it with the new
version.

PATCH
-----
Apply the following patch to your existing wuarchive ftpd sources,
recompile and install.

*** ftpd.c.orig
--- ftpd.c
***************
*** 413,418 ****
--- 413,420 ----
end_login();
}

+ anonymous = 0;
+
if (!strcasecmp(name, "ftp") || !strcasecmp(name, "anonymous")) {
if (checkuser("ftp") || checkuser("anonymous")) {
reply(530, "User %s access denied.", name);

NEW VERSION
-----------
The new version is available for anonymous ftp from wuarchive.wustl.edu
(128.252.135.4) in the directory /packages/wuarchive-ftpd and from
irbis.llnl.gov (128.115.19.60) in /pub/util. The file is named
wu-ftpd-2.0.tar.Z and has a checksum (obtained using the "sum" command)
of 56984 169. This release includes full documentation for installation
and configuration. See wu-ftpd-2.0/INSTALL, wu-ftpd-2.0/NOTES and
wu-ftpd-2.0/doc/README for more information on how to install and
operate this ftp server.

For additional information or assistance, please contact CIAC at
(510) 422-8193 / FTS or send E-mail to ciac@llnl.gov. FAX messages
to (510) 423-8002 / FTS.

CIAC would like to acknowledge the contributions of CERT Coordination
Center in the preparation of this bulletin.

Previous CIAC bulletins and other information is available via anonymous
ftp from irbis.llnl.gov (ip address 128.115.19.60).

PLEASE NOTE: Many users outside of the DOE and ESnet 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 by sending email to docserver@first.org
with an empty subject line and a message body containing the line:
send first-contacts.

Neither the United States Government nor the University of California
nor any of their employees, makes any warranty, expressed or implied,
or assumes any legal liability or responsibility for the accuracy,
completeness, or usefulness of any information, 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 nor the University of California, and shall not be used for
advertising or product endorsement purposes.

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