Synopsis:	Moderate: samba security update
Issue date:	2011-08-29
CVE Names:	CVE-2010-0547 CVE-2010-0787 CVE-2011-1678
                   CVE-2011-2522 CVE-2011-2694

Samba is a suite of programs used by machines to share files, printers, 
and other information.

A cross-site scripting (XSS) flaw was found in the password change page 
of the Samba Web Administration Tool (SWAT). If a remote attacker could 
trick a user, who was logged into the SWAT interface, into visiting a
specially-crafted URL, it would lead to arbitrary web script execution 
in the context of the user's SWAT session. (CVE-2011-2694)

It was found that SWAT web pages did not protect against Cross-Site
Request Forgery (CSRF) attacks. If a remote attacker could trick a user,
who was logged into the SWAT interface, into visiting a 
specially-crafted URL, the attacker could perform Samba configuration 
changes with the privileges of the logged in user. (CVE-2011-2522)

A race condition flaw was found in the way the mount.cifs tool mounted 
CIFS (Common Internet File System) shares. If mount.cifs had the setuid 
bit set, a local attacker could conduct a symbolic link attack to trick 
mount.cifs into mounting a share over an arbitrary directory they were 
otherwise not allowed to mount to, possibly allowing them to escalate 
their privileges. (CVE-2010-0787)

It was found that the mount.cifs tool did not properly handle share or
directory names containing a newline character. If mount.cifs had the
setuid bit set, a local attacker could corrupt the mtab (mounted file
systems table) file via a specially-crafted CIFS share mount request.
(CVE-2010-0547)

It was found that the mount.cifs tool did not handle certain errors
correctly when updating the mtab file. If mount.cifs had the setuid bit
set, a local attacker could corrupt the mtab file by setting a small 
file size limit before running mount.cifs. (CVE-2011-1678)

Note: mount.cifs from the samba packages distributed by Red Hat does not
have the setuid bit set. We recommend that administrators do not 
manually set the setuid bit for mount.cifs.

Users of Samba are advised to upgrade to these updated packages, which
contain backported patches to resolve these issues. After installing 
this update, the smb service will be restarted automatically.

SL 4.x

       SRPMS:
samba-3.0.33-0.34.el4.src.rpm
       i386:
samba-3.0.33-0.34.el4.i386.rpm
samba-client-3.0.33-0.34.el4.i386.rpm
samba-common-3.0.33-0.34.el4.i386.rpm
samba-swat-3.0.33-0.34.el4.i386.rpm
       x86_64:
samba-3.0.33-0.34.el4.x86_64.rpm
samba-client-3.0.33-0.34.el4.x86_64.rpm
samba-common-3.0.33-0.34.el4.i386.rpm
samba-common-3.0.33-0.34.el4.x86_64.rpm
samba-swat-3.0.33-0.34.el4.x86_64.rpm

SL 5.x

       SRPMS:
samba-3.0.33-3.29.el5_7.4.src.rpm
       i386:
samba-3.0.33-3.29.el5_7.4.i386.rpm
samba-client-3.0.33-3.29.el5_7.4.i386.rpm
samba-common-3.0.33-3.29.el5_7.4.i386.rpm
samba-swat-3.0.33-3.29.el5_7.4.i386.rpm
libsmbclient-3.0.33-3.29.el5_7.4.i386.rpm
libsmbclient-devel-3.0.33-3.29.el5_7.4.i386.rpm
       x86_64:
samba-3.0.33-3.29.el5_7.4.x86_64.rpm
samba-client-3.0.33-3.29.el5_7.4.x86_64.rpm
samba-common-3.0.33-3.29.el5_7.4.i386.rpm
samba-common-3.0.33-3.29.el5_7.4.x86_64.rpm
samba-swat-3.0.33-3.29.el5_7.4.x86_64.rpm
libsmbclient-3.0.33-3.29.el5_7.4.i386.rpm
libsmbclient-3.0.33-3.29.el5_7.4.x86_64.rpm
libsmbclient-devel-3.0.33-3.29.el5_7.4.i386.rpm
libsmbclient-devel-3.0.33-3.29.el5_7.4.x86_64.rpm

- Scientific Linux Development Team