Description
The default Samba server configuration enabled both the "wide links" and
"unix extensions" options, allowing Samba clients with write access to a
share to create symbolic links that point to any location on the file
system. Clients connecting with CIFS UNIX extensions disabled could have
such links resolved on the server, allowing them to access and possibly
overwrite files outside of the share. With this update, "wide links" is
set to "no" by default. In addition, the update ensures "wide links" is
disabled for shares that have "unix extensions" enabled. (CVE-2010-0926)