Download Red Hat Enterprise Linux 5 5.8 Technical Notes

Red Hat Enterprise Linux 5 5.8 Technical Notes
Samba is an open-source implementation of the Server Message Block (SMB) or Common Internet File
System (CIFS) protocol, which allows PC-compatible machines to share files, printers, and other
information.
Security Fix
CVE-2010-0926
T he 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.
Warning
T his update may cause files and directories that are only linked to Samba shares using symbolic
links to become inaccessible to Samba clients. In deployments where support for CIFS UNIX
extensions is not needed (such as when files are exported to Microsoft Windows clients),
administrators may prefer to set the "unix extensions" option to "no" to allow the use of symbolic
links to access files out of the shared directories. All existing symbolic links in a share should be
reviewed before re-enabling "wide links".
Bug Fix
BZ #768908
T he smbclient tool sometimes failed to return the proper exit status code. Consequently, using
smbclient in a script caused some scripts to fail. With this update, an upstream patch has been
applied and smbclient now returns the correct exit status.
Enhacement
BZ #736124
With this update, support for Windows Server 2008 R2 domains has been added.
Users are advised to upgrade to these updated samba packages, which correct these issues and add
this enhancement. After installing this update, the smb service will be restarted automatically.
4.173. samba3x
4.173.1. RHSA-2011:1220 — Moderate: samba3x security update
Updated samba3x packages that fix multiple security issues are now available for Red Hat Enterprise
Linux 5.
T he Red Hat Security Response T eam has rated this update as having moderate security impact.
Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are
available for each vulnerability from the CVE links associated with each description below.
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