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Mandrake: 'openssh' vulnerability Print E-mail
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Posted by Team   
Mandrake A problem exists with openssh's scp program.


                Linux-Mandrake Security Update Advisory

Package name:           openssh
Date:                   October 10th, 2000
Advisory ID:            MDKSA-2000:057

Affected versions:      7.0, 7.1

Problem Description:

 A problem exists with openssh's scp program.  If a user uses scp to
 move files from a server that has been compromised, the operation can
 be used to replace arbitrary files on the user's system.  The problem
 is made more serious by setuid versions of ssh which allow overwriting
 any file on the local user's system.  If the ssh program is not setuid
 or is setuid to someone other than root, the intrustion is limited to
 files with write access granted to the owner of the ssh program.  In
 either case, files can be overwritten with code allowing others access
 to the system unexpectedly.  While no fix has been provided for openssh
 as of yet, the versions of openssh available for Linux-Mandrake 7.0 and
 7.1 were setuid root.  This update removes the setuid bit from the ssh
 program and limits the exploitability of scp somewhat.  All users of
 Linux-Mandrake are encouraged to upgrade to these latest openssh 
 builds.  Linux-Mandrake 7.0 users will also need to upgrade openssl in
 order to use the 7.0 update of openssh.

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:
305e0198128f0ff9c1c9292ec09b4dcc  7.0/RPMS/openssh-2.1.1p3-4mdk.i586.rpm
b9926356f70c27be00d2b50c96b11bd0  7.0/RPMS/openssh-askpass-2.1.1p3-4mdk.i586.rpm
c4264c9b9ab857ddd4555c05096e4697  7.0/RPMS/openssh-clients-2.1.1p3-4mdk.i586.rpm
21f1d76dc514f6e59c6023affc80dc54  7.0/RPMS/openssh-server-2.1.1p3-4mdk.i586.rpm
a3dd007c212763d4ece19b50e013edd0  7.0/RPMS/openssl-0.9.5a-3mdk.i586.rpm
b8d23e53945a0c53525701c0ed298d01  7.0/RPMS/openssl-devel-0.9.5a-3mdk.i586.rpm
a6b82e7d0e991b0d169fa00a5aeb8774  7.0/SRPMS/openssh-2.1.1p3-4mdk.src.rpm

Linux-Mandrake 7.1:
859074e6bea599faf97ead477a8e97fe  7.1/RPMS/openssh-2.1.1p3-4mdk.i586.rpm
5df518f2b4cb308fee7b78b127972733  7.1/RPMS/openssh-askpass-2.1.1p3-4mdk.i586.rpm
a00ae71dadecbde77ccd9b4d0d0b818a  7.1/RPMS/openssh-clients-2.1.1p3-4mdk.i586.rpm
8abf7df4ed56bcbb517ebe9b549d2df7  7.1/RPMS/openssh-server-2.1.1p3-4mdk.i586.rpm
a6b82e7d0e991b0d169fa00a5aeb8774  7.1/SRPMS/openssh-2.1.1p3-4mdk.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:

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

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:

If you want to report vulnerabilities, please contact

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

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

  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
with "subscribe [listname]" in the body of the message.

To remove yourself from either list, send a message to
with "unsubscribe [listname]" in the body of the message.

To get more information on either list, send a message to
with "info [listname]" in the body of the message.

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

Type Bits/KeyID     Date       User ID
pub  1024D/22458A98 2000-07-10 Linux Mandrake Security Team 

Version: GnuPG v1.0.1 (GNU/Linux)
Comment: For info see


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