Linux-Mandrake Security Update Advisory: openssh update
Nov 14, 2000, 21:12 (0 Talkback[s])
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Date: Mon, 13 Nov 2000 22:21:01 -0700
From: Linux Mandrake Security Team
To: Linux Mandrake Security Announcements
Subject: [Security Announce] MDKSA-2000:068 - openssh update
Linux-Mandrake Security Update Advisory
Package name: openssh
Date: November 13th, 2000
Advisory ID: MDKSA-2000:068
Affected versions: 7.0, 7.1, 7.2
A vulnerability exists with all versions of OpenSSH prior to
2.3.0 with regards to the X11 forwarding and ssh-agent. If agent or
X11 forwarding is disabled in the ssh client configuration, the
client does not request these features during session setup.
However, when the ssh client receives an actual request asking for
access to the ssh-agent, the client fails to check whether this
feature has been negotiated during session setup. The client does
not check whether the request is in compliance with the client
configuration and grants access to the ssh-agent. A similar problem
exists in the X11 forwarding implementation.
Please verify these md5 checksums of the updates prior to
upgrading to ensure the integrity of the downloaded package. You
can do this by running the md5sum program on the downloaded package
by using "md5sum package.rpm".
To upgrade automatically, use
If you want to upgrade manually, download the updated package
from one of our FTP server mirrors and uprade with "rpm -Uvh
You can download the updates directly from:
Or try one of the other mirrors listed at:
Updated packages are available in the "updates/[ver]/RPMS/"
directory. For example, if you are looking for an updated RPM
package for Linux-Mandrake 7.1, look for it in "updates/7.1/RPMS/".
Updated source RPMs are available as well, but you generally do not
need to download them.
Please be aware that sometimes it takes the mirrors a few hours
to update, so if you want an immediate upgrade, please use one of
the two above-listed mirrors.
You can view other security advisories for Linux-Mandrake
If you want to report vulnerabilities, please contact
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