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Debian: DSA 975-1 Critical: NFS-User-Server Buffer Overflow Exploit

debian
Calendar Grey February 15, 2006
Debian Logo
Mitigation implemented for potential code execution risks in nfs-user-server. This fix addresses buffer overflow issues associated with the processing of symbolic links.
Marcus Meissner discovered that attackers can trigger a buffer overflow in the path handling code by creating or abusing existing symlinks, which may lead to the execution of arbit...

Summary


This update includes a bugfix for attribute handling of symlinks. This
fix does not have security implications, but at the time when this DSA
was prepared it was already queued for the next stable point release, so
we decided to include it beforehand.

For the old stable distribution (woody) this problem has been fixed in
version 2.2beta47-12woody1.

For the stable distribution (sarge) this problem has been fixed in
version 2.2beta47-20sarge2.

For the unstable distribution (sid) this problem has been fixed in
version 2.2beta47-22.

We recommend that you upgrade your nfs-user-server package.


Upgrade Instructions
- --------------------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 addin...

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