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SA-1997.27.txt

SA-1997.27.txt
Posted Sep 23, 1999

SA-1997.27.txt

SHA-256 | 62c22c14737981ea6214b6c63c8aa49ffd5242b8049f9ebc22231e81f96e2927

SA-1997.27.txt

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-----BEGIN PGP SIGNED MESSAGE-----

Subject: Caldera Security Advisory SA-1997.27: Vulnerability in wu-ftpd

Caldera Security Advisory SA-1997.27

Original report date: 25-Sep-1997
RPM build date: 19-Nov-1997
Advisory issue date: 26-Nov-1997

Topic: Vulnerability in the wu-ftpd package


I. Problem Description

A vulnerability exists within WU-FTPD that allows a denial of service
attack. Arbitrary individuals can shut down the FTP server.


II. Impact

On systems such as Caldera OpenLinux 1.1, an unprivileged
user connecting to the FTP server can send it a command that
will consume considerable CPU and memory resources. Doing so on
several FTP sessions simultaneously can drive up the system load
to a point where the machine becomes unusable.

This problem was present on the following OpenLinux releases:

Base 1.0
Lite 1.1
Base 1.1
Standard 1.1

To determine if you are affected and need this update you may do
the following:

rpm -q wu-ftpd

If the results show wu-ftpd-2.4.2b12-3 or earlier then you will need
to update.


III. Solution

The proper solution is to install the new wu-ftpd package.
This package is located on Caldera's FTP server (ftp.caldera.com):

The binary RPM can be obtained at:
ftp://ftp.caldera.com/pub/openlinux/updates/1.1/current/RPMS

The source RPM can be obtained at:
ftp://ftp.caldera.com/pub/openlinux/updates/1.1/current/SRPMS

All that is required to do to install the fix is the following:

rpm -U wu-ftpd-2.4.2b15-4.i386.rpm

The MD5 checksums (from the "md5sum" command) for these packages are:

71ffc9f6e22496597ee4be7f998998af wu-ftpd-2.4.2b15-4.i386.rpm
4874b109bbeb6a73112bb9822de6b48d wu-ftpd-2.4.2b15-4.src.rpm


IV. References

This and other Caldera security resources are located at:

http://www.caldera.com/tech-ref/security/

This advisory is based on message posted to the Bugtraq Mail email
list. For more information see the Bugtraq archive at:

http://www.geek-girl.com/bugtraq/1997_3/0424.html

This Security Alert closes Caldera internal problem report #1106.


V. PGP Signature

This message was signed with the PGP key for <security@caldera.com>.

This key can be obtained from:
ftp://ftp.caldera.com/pub/pgp-keys/

Or on an OpenLinux CDROM under:
/OpenLinux/pgp-keys/

$Id: SA-1997.27,v 1.2 1997/11/27 01:08:31 ron Exp ron $

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