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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

Problem Description:

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".

Linux-Mandrake 7.0:
c487637c7c67584037f5d7f32ceb4bd0 7.0/RPMS/openssh-2.3.0p1-7.2mdk.i586.rpm
ea47d2712a1d778a25f605b346b0a3df 7.0/RPMS/openssh-askpass-2.3.0p1-7.2mdk.i586.rpm
8bd652818596ae1e8685bdde7eaa061c 7.0/RPMS/openssh-askpass-gnome-2.3.0p1-7.2mdk.i586.rpm
0ecd5317bac4cabd8f741fdb303016dd 7.0/RPMS/openssh-clients-2.3.0p1-7.2mdk.i586.rpm
44f0e05acf28a7f8ef14c70b5caf508f 7.0/RPMS/openssh-server-2.3.0p1-7.2mdk.i586.rpm
688d994c5e437e305a3b5d3e970ecbd6 7.0/SRPMS/openssh-2.3.0p1-7.2mdk.src.rpm

Linux-Mandrake 7.1:
849f5c15c69811be37e1f67bec540816 7.1/RPMS/openssh-2.3.0p1-7.2mdk.i586.rpm
a06c583ead7df4ef7c3fb8e5f9c9d57d 7.1/RPMS/openssh-askpass-2.3.0p1-7.2mdk.i586.rpm
6d8f0c741a1478059d5361844fc863e0 7.1/RPMS/openssh-askpass-gnome-2.3.0p1-7.2mdk.i586.rpm
9d6ddd35ab5888ad4f4277c8c9abf615 7.1/RPMS/openssh-clients-2.3.0p1-7.2mdk.i586.rpm
55c388f53f13484718243a1f0071dbb2 7.1/RPMS/openssh-server-2.3.0p1-7.2mdk.i586.rpm
688d994c5e437e305a3b5d3e970ecbd6 7.1/SRPMS/openssh-2.3.0p1-7.2mdk.src.rpm

Linux-Mandrake 7.2:
17c76fbe98323e5921640f30422aa2b1 7.2/RPMS/openssh-2.3.0p1-7.1mdk.i586.rpm
9c72974653bfdb2d1e02ddbc1897f00b 7.2/RPMS/openssh-askpass-2.3.0p1-7.1mdk.i586.rpm
67c990f971b9b81ecb1834393a3ebc0d 7.2/RPMS/openssh-askpass-gnome-2.3.0p1-7.1mdk.i586.rpm
83a19718139506cd92303e1e59ed0413 7.2/RPMS/openssh-clients-2.3.0p1-7.1mdk.i586.rpm
0ad740d9dc37c58a66976b5d84efb5a6 7.2/RPMS/openssh-server-2.3.0p1-7.1mdk.i586.rpm
f7c747d5c7d93dc0e1108b1a28f3aa47 7.2/SRPMS/openssh-2.3.0p1-7.1mdk.src.rpm


To upgrade automatically, use <<MandrakeUpdate>>.

If you want to upgrade manually, download the updated package from one of our FTP server mirrors and uprade with "rpm -Uvh package_name".

You can download the updates directly from:
ftp://ftp.linux.tucows.com/pub/distributions/Mandrake/Mandrake/updates
ftp://ftp.free.fr/pub/Distributions_Linux/Mandrake/updates

Or try one of the other mirrors listed at:

http://www.linux-mandrake.com/en/ftp.php3.

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 at:

http://www.linux-mandrake.com/en/security/

If you want to report vulnerabilities, please contact

security@linux-mandrake.com


Linux-Mandrake has two security-related mailing list services that anyone can subscribe to:

security-announce@linux-mandrake.com

Linux-Mandrake's security announcements mailing list. Only announcements are sent to this list and it is read-only.

security-discuss@linux-mandrake.com

Linux-Mandrake's security discussion mailing list. This list is open to anyone to discuss Linux-Mandrake security specifically and Linux security in general.

To subscribe to either list, send a message to sympa@linux-mandrake.com with "subscribe [listname]" in the body of the message.

To remove yourself from either list, send a message to sympa@linux-mandrake.com with "unsubscribe [listname]" in the body of the message.

To get more information on either list, send a message to sympa@linux-mandrake.com with "info [listname]" in the body of the message.

Optionally, you can use the web interface to subscribe to or unsubscribe from either list:

http://www.linux-mandrake.com/en/flists.php3#security