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Mandrake: 'mc' vulnerability Print E-mail
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Posted by Team   
Mandrake cons.saver does not check if it is started with a valid stdout, which combined with a bug in its check to see if its argument is a tty


                Linux-Mandrake Security Update Advisory

Package name:           mc
Date:                   December 12th, 2000
Advisory ID:            MDKSA-2000:078

Affected versions:      6.0, 6.1, 7.0, 7.1, 7.2

Problem Description:

 A problem was found in the cons.saver program by Maurycy Prodeus.  The
 cons.saver program is a screensaver for the console that is included in
 the mc package.  cons.saver does not check if it is started with a
 valid stdout, which combined with a bug in its check to see if its
 argument is a tty (it forgets to close the file-descriptor after
 opening the supposed tty), causes it to write a NULL character to the
 file given as its parameter.

Please verify the update prior to upgrading to ensure the integrity of
the downloaded package.  You can do this with the command:
  rpm --checksig package.rpm
You can get the GPG public key of the Linux-Mandrake Security Team at
If you use MandrakeUpdate, the verification of md5 checksum and GPG
signature is performed automatically for you.

Linux-Mandrake 6.0:
94010e30a55d46c43ffb8eb4c144e841  6.0/RPMS/gmc-4.5.31-14.1mdk.i586.rpm
857a95b5a7a67d17383f04d62637419c  6.0/RPMS/mc-4.5.31-14.1mdk.i586.rpm
c5155c5d96f43b3d375125559cc0835b  6.0/RPMS/mcserv-4.5.31-14.1mdk.i586.rpm
decb6ae6ec46dd233371964a97cb3b5e  6.0/SRPMS/mc-4.5.31-14.1mdk.src.rpm

Linux-Mandrake 6.1:
625fb8e2d9884baf59bcac7c0b4afe05  6.1/RPMS/gmc-4.5.38-4.1mdk.i586.rpm
50e6d123863c34c76a3d80ad1b27f62c  6.1/RPMS/mc-4.5.38-4.1mdk.i586.rpm
a46cb9edbfe386fe2b7e8a392474a2a5  6.1/RPMS/mcserv-4.5.38-4.1mdk.i586.rpm
f907d6478e1a7ee5d32642cde963e36b  6.1/SRPMS/mc-4.5.38-4.1mdk.src.rpm

Linux-Mandrake 7.0:
06972a05b8f99dd061c22668991605b8  7.0/RPMS/gmc-4.5.42-4.1mdk.i586.rpm
5229a4d9160a31d7b0dd16cae1ec7693  7.0/RPMS/mc-4.5.42-4.1mdk.i586.rpm
f0b17a560945282fc7b6b231c174e412  7.0/RPMS/mcserv-4.5.42-4.1mdk.i586.rpm
cf99db53a76a843981d8a82f88cb6e36  7.0/SRPMS/mc-4.5.42-4.1mdk.src.rpm

Linux-Mandrake 7.1:
df6d86941694f835fa603d55f69ce4a1  7.1/RPMS/gmc-4.5.46-1.1mdk.i586.rpm
5c7037a236f59f481aa2380e696e75b7  7.1/RPMS/mc-4.5.46-1.1mdk.i586.rpm
43410adf76898c2ef9040390312aa898  7.1/RPMS/mcserv-4.5.46-1.1mdk.i586.rpm
7e03a291a33ca3633e634e28286f44b3  7.1/SRPMS/mc-4.5.46-1.1mdk.src.rpm

Linux-Mandrake 7.2:
8c8889a0a630d27b36a4f665735f10ac  7.2/RPMS/gmc-4.5.51-7.1mdk.i586.rpm
a48455c265d3d439a7d8e038a1f6bf9f  7.2/RPMS/mc-4.5.51-7.1mdk.i586.rpm
a2461debb989236e2a95fb46cf1a80a5  7.2/RPMS/mcserv-4.5.51-7.1mdk.i586.rpm
5baf51bf39d6e539ed4a3ac36e563cc5  7.2/SRPMS/mc-4.5.51-7.1mdk.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 -Fvh *.rpm".  

You can download the updates directly from one of the mirror sites
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 7.2, look for it in "updates/7.2/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 

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:

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