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Debian 2.2 DSA 116-1 Critical: CFS Buffer Overflow Attack Exposed

debian
Calendar Grey March 2, 2002
Debian Logo
Ubuntu releases USN-1234-1 concerning a flaw in nfs caused by improper input validation. It is recommended that users update their systems to enhance protection.
Zorgon found several buffer overflows in cfsd, a daemon that pushesencryption services into the Unix(tm) file system.

Summary

Zorgon found several buffer overflows in cfsd, a daemon that pushes
encryption services into the Unix(tm) file system. We are not yet
sure if these overflows can successfully be exploited to gain root
access to the machine running the CFS daemon. However, since cfsd can
easily be forced to die, a malicious user can easily perform a denial
of service attack to it.

This problem has been fixed in version 1.3.3-8.1 for the stable Debian
distribution and in version 1.4.1-5 for the testing and undtable
distribution of Debian.

We recommend that you upgrade your cfs package immediately.

wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
will update the internal database
apt-get upgrade
will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.


Debian GNU/Linux 2.2 ...

Read the Full Advisory

Severity
critical
Lowest
Low
Medium
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Critical

Package: cfs

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