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 Post subject: OpenSSH security fix
PostPosted: Tue Sep 16, 2003 3:21 pm 
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Linode Staff
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Joined: Tue Apr 15, 2003 6:24 pm
Posts: 3090
Website: http://www.linode.com/
Location: Galloway, NJ
RedHat, Gentoo, and Debian (at least) contain a security vulnerability in OpenSSH which will allow someone to remotely execute code as root.

Red Hat's Errata Page:

https://rhn.redhat.com/errata/RHSA-2003-279.html

To upgrade, run the following commands (for Debian and RedHat)

apt-get update
apt-get install openssh

Please make sure your SSH daemons are either patched or upgraded.

Word,
-Chris


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 Post subject: Re: OpenSSH security fix
PostPosted: Tue Sep 16, 2003 4:45 pm 
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Senior Member

Joined: Sat Jun 28, 2003 12:02 am
Posts: 66
Website: http://kenny.aust.in
updates.redhdat.com wrote:
There are too many connected users, please try later.

weeee......

Has anyone ever used lsh? I'd really like to quit running openssh as these types of problems seem to be pretty common. I wish Dan Bernstein would write a ssh server :lol:

Kenny


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 Post subject: SSH again
PostPosted: Wed Sep 17, 2003 8:30 am 
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Senior Newbie

Joined: Wed Jul 02, 2003 6:46 am
Posts: 13
Location: UK
Depending on when you followed Chris' instructions regarding yesterday's vulnerability, you may need to upgrade SSH again:

Quote:
- ------------------------------------------------------------------------
Debian Security Advisory DSA-382-2 security@debian.org
http://www.debian.org/security/ Wichert Akkerman
September 17, 2003
- ------------------------------------------------------------------------
Package : ssh
Vulnerability : buffer handling
Problem type : possible remote
Debian-specific: no
CVS references : CAN-2003-0693 CAN-2003-0695

This advisory is an addition to the earlier DSA-382-1 advisory: two more
buffer handling problems have been found in addition to the one
described in DSA-382-1. It is not known if these bugs are exploitable,
but as a precaution an upgrade is advised.

For the Debian stable distribution these bugs have been fixed in version
1:3.4p1-1.woody.2 .

Please note that if a machine is setup to install packages from
proposed-updates it will not automatically install this update.


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 Post subject:
PostPosted: Wed Sep 17, 2003 8:19 pm 
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Linode Staff
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Joined: Tue Apr 15, 2003 6:24 pm
Posts: 3090
Website: http://www.linode.com/
Location: Galloway, NJ
Sure enough, the Red Hat repository contains a newer version than the one from yesterday afternoon.

apt-get update
apt-get install openssh

Also note that I haven't updated the distros to contain these (and potentially other) security fixes. First thing out the door you should do with any new install is make sure it is up to date. (apt-get update; apt-get upgrade)

-Chris


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