[RHSA-2013:0506-02] Moderate: samba4 security, bug fix and enhancement update

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Red Hat Security Advisory

 

Synopsis: Moderate: samba4 security, bug fix and enhancement update

Advisory ID: RHSA-2013:0506-02

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2013-0506.html

Issue date: 2013-02-21

CVE Names: CVE-2012-1182

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1. Summary:

 

Updated samba4 packages that fix one security issue, multiple bugs, and add

various enhancements are now available for Red Hat Enterprise Linux 6.

 

The Red Hat Security Response Team has rated this update as having moderate

security impact. A Common Vulnerability Scoring System (CVSS) base score,

which gives a detailed severity rating, is available from the CVE link in

the References section.

 

2. Relevant releases/architectures:

 

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

 

3. Description:

 

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.

 

A flaw was found in the Samba suite's Perl-based DCE/RPC IDL (PIDL)

compiler, used to generate code to handle RPC calls. This could result in

code generated by the PIDL compiler to not sufficiently protect against

buffer overflows. (CVE-2012-1182)

 

The samba4 packages have been upgraded to upstream version 4.0.0, which

provides a number of bug fixes and enhancements over the previous version.

In particular, improved interoperability with Active Directory (AD)

domains. SSSD now uses the libndr-krb5pac library to parse the Privilege

Attribute Certificate (PAC) issued by an AD Key Distribution Center (KDC).

 

The Cross Realm Kerberos Trust functionality provided by Identity

Management, which relies on the capabilities of the samba4 client library,

is included as a Technology Preview. This functionality and server

libraries, is included as a Technology Preview. This functionality uses the

libndr-nbt library to prepare Connection-less Lightweight Directory Access

Protocol (CLDAP) messages.

 

Additionally, various improvements have been made to the Local Security

Authority (LSA) and Net Logon services to allow verification of trust

from a Windows system. Because the Cross Realm Kerberos Trust functionality

is considered a Technology Preview, selected samba4 components are

considered to be a Technology Preview. For more information on which Samba

packages are considered a Technology Preview, refer to Table 5.1, "Samba4

Package Support" in the Release Notes, linked to from the References.

(BZ#766333, BZ#882188)

 

This update also fixes the following bug:

 

* Prior to this update, if the Active Directory (AD) server was rebooted,

Winbind sometimes failed to reconnect when requested by "wbinfo -n" or

"wbinfo -s" commands. Consequently, looking up users using the wbinfo tool

failed. This update applies upstream patches to fix this problem and now

looking up a Security Identifier (SID) for a username, or a username for a

given SID, works as expected after a domain controller is rebooted.

(BZ#878564)

 

All users of samba4 are advised to upgrade to these updated packages,

which fix these issues and add these enhancements.

 

Warning: If you upgrade from Red Hat Enterprise Linux 6.3 to Red Hat

Enterprise Linux 6.4 and you have Samba in use, you should make sure that

you uninstall the package named "samba4" to avoid conflicts during the

upgrade.

 

4. Solution:

 

Before applying this update, make sure all previously-released errata

relevant to your system have been applied.

 

This update is available via the Red Hat Network. Details on how to

use the Red Hat Network to apply this update are available at

https://access.redhat.com/knowledge/articles/11258

 

5. Bugs fixed (http://bugzilla.redhat.com/):

 

766333 - Rebase Samba4 libraries to pick up functionality required for IdM

804093 - CVE-2012-1182 samba: Multiple heap-based buffer overflows in memory management based on NDR marshalling code output

861892 - samba4's wbclient/smbclient provides need to be filtered to avoid confusion with samba's wbclient/smbclient provides

864889 - Configure winbind_krb5_locator.so via alternatives to allow IPA AD trusts use

867317 - pam_winbind.conf is not packaged in samba-winbind-clients where the module is packaged.

867854 - auth_builtin auth_domain auth_sam and auth_winbind are built as shared modules.

868248 - samba-winbind package wants /var/log/samba

868419 - samba4 smb and winbind init scripts missing export KRB5CCNAME

877085 - Wrong sysconfig filename

878564 - IPA trust cannot always lookup AD users with wbinfo

882188 - samba4-libs: yyin symbol collision

885089 - Samba netlogon AES support incorrect

886157 - samba4 should use the same winbind pipes as samba

895718 - Incomplete rpm provides filters causes issues with the samba4-libs package on certain architectures

 

6. Package List:

 

Red Hat Enterprise Linux Desktop (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/samba4-4.0.0-55.el6.rc4.src.rpm

 

i386:

samba4-4.0.0-55.el6.rc4.i686.rpm

samba4-client-4.0.0-55.el6.rc4.i686.rpm

samba4-common-4.0.0-55.el6.rc4.i686.rpm

samba4-dc-4.0.0-55.el6.rc4.i686.rpm

samba4-dc-libs-4.0.0-55.el6.rc4.i686.rpm

samba4-debuginfo-4.0.0-55.el6.rc4.i686.rpm

samba4-devel-4.0.0-55.el6.rc4.i686.rpm

samba4-libs-4.0.0-55.el6.rc4.i686.rpm

samba4-pidl-4.0.0-55.el6.rc4.i686.rpm

samba4-python-4.0.0-55.el6.rc4.i686.rpm

samba4-swat-4.0.0-55.el6.rc4.i686.rpm

samba4-test-4.0.0-55.el6.rc4.i686.rpm

samba4-winbind-4.0.0-55.el6.rc4.i686.rpm

samba4-winbind-clients-4.0.0-55.el6.rc4.i686.rpm

samba4-winbind-krb5-locator-4.0.0-55.el6.rc4.i686.rpm

 

x86_64:

samba4-4.0.0-55.el6.rc4.x86_64.rpm

samba4-client-4.0.0-55.el6.rc4.x86_64.rpm

samba4-common-4.0.0-55.el6.rc4.x86_64.rpm

samba4-dc-4.0.0-55.el6.rc4.x86_64.rpm

samba4-dc-libs-4.0.0-55.el6.rc4.x86_64.rpm

samba4-debuginfo-4.0.0-55.el6.rc4.x86_64.rpm

samba4-devel-4.0.0-55.el6.rc4.x86_64.rpm

samba4-libs-4.0.0-55.el6.rc4.x86_64.rpm

samba4-pidl-4.0.0-55.el6.rc4.x86_64.rpm

samba4-python-4.0.0-55.el6.rc4.x86_64.rpm

samba4-swat-4.0.0-55.el6.rc4.x86_64.rpm

samba4-test-4.0.0-55.el6.rc4.x86_64.rpm

samba4-winbind-4.0.0-55.el6.rc4.x86_64.rpm

samba4-winbind-clients-4.0.0-55.el6.rc4.x86_64.rpm

samba4-winbind-krb5-locator-4.0.0-55.el6.rc4.x86_64.rpm

 

Red Hat Enterprise Linux HPC Node (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/samba4-4.0.0-55.el6.rc4.src.rpm

 

x86_64:

samba4-4.0.0-55.el6.rc4.x86_64.rpm

samba4-client-4.0.0-55.el6.rc4.x86_64.rpm

samba4-common-4.0.0-55.el6.rc4.x86_64.rpm

samba4-dc-4.0.0-55.el6.rc4.x86_64.rpm

samba4-dc-libs-4.0.0-55.el6.rc4.x86_64.rpm

samba4-debuginfo-4.0.0-55.el6.rc4.x86_64.rpm

samba4-devel-4.0.0-55.el6.rc4.x86_64.rpm

samba4-libs-4.0.0-55.el6.rc4.x86_64.rpm

samba4-pidl-4.0.0-55.el6.rc4.x86_64.rpm

samba4-python-4.0.0-55.el6.rc4.x86_64.rpm

samba4-swat-4.0.0-55.el6.rc4.x86_64.rpm

samba4-test-4.0.0-55.el6.rc4.x86_64.rpm

samba4-winbind-4.0.0-55.el6.rc4.x86_64.rpm

samba4-winbind-clients-4.0.0-55.el6.rc4.x86_64.rpm

samba4-winbind-krb5-locator-4.0.0-55.el6.rc4.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/samba4-4.0.0-55.el6.rc4.src.rpm

 

i386:

samba4-4.0.0-55.el6.rc4.i686.rpm

samba4-client-4.0.0-55.el6.rc4.i686.rpm

samba4-common-4.0.0-55.el6.rc4.i686.rpm

samba4-dc-4.0.0-55.el6.rc4.i686.rpm

samba4-dc-libs-4.0.0-55.el6.rc4.i686.rpm

samba4-debuginfo-4.0.0-55.el6.rc4.i686.rpm

samba4-devel-4.0.0-55.el6.rc4.i686.rpm

samba4-libs-4.0.0-55.el6.rc4.i686.rpm

samba4-pidl-4.0.0-55.el6.rc4.i686.rpm

samba4-python-4.0.0-55.el6.rc4.i686.rpm

samba4-swat-4.0.0-55.el6.rc4.i686.rpm

samba4-test-4.0.0-55.el6.rc4.i686.rpm

samba4-winbind-4.0.0-55.el6.rc4.i686.rpm

samba4-winbind-clients-4.0.0-55.el6.rc4.i686.rpm

samba4-winbind-krb5-locator-4.0.0-55.el6.rc4.i686.rpm

 

ppc64:

samba4-4.0.0-55.el6.rc4.ppc64.rpm

samba4-client-4.0.0-55.el6.rc4.ppc64.rpm

samba4-common-4.0.0-55.el6.rc4.ppc64.rpm

samba4-dc-4.0.0-55.el6.rc4.ppc64.rpm

samba4-dc-libs-4.0.0-55.el6.rc4.ppc64.rpm

samba4-debuginfo-4.0.0-55.el6.rc4.ppc64.rpm

samba4-devel-4.0.0-55.el6.rc4.ppc64.rpm

samba4-libs-4.0.0-55.el6.rc4.ppc64.rpm

samba4-pidl-4.0.0-55.el6.rc4.ppc64.rpm

samba4-python-4.0.0-55.el6.rc4.ppc64.rpm

samba4-swat-4.0.0-55.el6.rc4.ppc64.rpm

samba4-test-4.0.0-55.el6.rc4.ppc64.rpm

samba4-winbind-4.0.0-55.el6.rc4.ppc64.rpm

samba4-winbind-clients-4.0.0-55.el6.rc4.ppc64.rpm

samba4-winbind-krb5-locator-4.0.0-55.el6.rc4.ppc64.rpm

 

s390x:

samba4-4.0.0-55.el6.rc4.s390x.rpm

samba4-client-4.0.0-55.el6.rc4.s390x.rpm

samba4-common-4.0.0-55.el6.rc4.s390x.rpm

samba4-dc-4.0.0-55.el6.rc4.s390x.rpm

samba4-dc-libs-4.0.0-55.el6.rc4.s390x.rpm

samba4-debuginfo-4.0.0-55.el6.rc4.s390x.rpm

samba4-devel-4.0.0-55.el6.rc4.s390x.rpm

samba4-libs-4.0.0-55.el6.rc4.s390x.rpm

samba4-pidl-4.0.0-55.el6.rc4.s390x.rpm

samba4-python-4.0.0-55.el6.rc4.s390x.rpm

samba4-swat-4.0.0-55.el6.rc4.s390x.rpm

samba4-test-4.0.0-55.el6.rc4.s390x.rpm

samba4-winbind-4.0.0-55.el6.rc4.s390x.rpm

samba4-winbind-clients-4.0.0-55.el6.rc4.s390x.rpm

samba4-winbind-krb5-locator-4.0.0-55.el6.rc4.s390x.rpm

 

x86_64:

samba4-4.0.0-55.el6.rc4.x86_64.rpm

samba4-client-4.0.0-55.el6.rc4.x86_64.rpm

samba4-common-4.0.0-55.el6.rc4.x86_64.rpm

samba4-dc-4.0.0-55.el6.rc4.x86_64.rpm

samba4-dc-libs-4.0.0-55.el6.rc4.x86_64.rpm

samba4-debuginfo-4.0.0-55.el6.rc4.x86_64.rpm

samba4-devel-4.0.0-55.el6.rc4.x86_64.rpm

samba4-libs-4.0.0-55.el6.rc4.x86_64.rpm

samba4-pidl-4.0.0-55.el6.rc4.x86_64.rpm

samba4-python-4.0.0-55.el6.rc4.x86_64.rpm

samba4-swat-4.0.0-55.el6.rc4.x86_64.rpm

samba4-test-4.0.0-55.el6.rc4.x86_64.rpm

samba4-winbind-4.0.0-55.el6.rc4.x86_64.rpm

samba4-winbind-clients-4.0.0-55.el6.rc4.x86_64.rpm

samba4-winbind-krb5-locator-4.0.0-55.el6.rc4.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 6):

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/samba4-4.0.0-55.el6.rc4.src.rpm

 

i386:

samba4-4.0.0-55.el6.rc4.i686.rpm

samba4-client-4.0.0-55.el6.rc4.i686.rpm

samba4-common-4.0.0-55.el6.rc4.i686.rpm

samba4-dc-4.0.0-55.el6.rc4.i686.rpm

samba4-dc-libs-4.0.0-55.el6.rc4.i686.rpm

samba4-debuginfo-4.0.0-55.el6.rc4.i686.rpm

samba4-devel-4.0.0-55.el6.rc4.i686.rpm

samba4-libs-4.0.0-55.el6.rc4.i686.rpm

samba4-pidl-4.0.0-55.el6.rc4.i686.rpm

samba4-python-4.0.0-55.el6.rc4.i686.rpm

samba4-swat-4.0.0-55.el6.rc4.i686.rpm

samba4-test-4.0.0-55.el6.rc4.i686.rpm

samba4-winbind-4.0.0-55.el6.rc4.i686.rpm

samba4-winbind-clients-4.0.0-55.el6.rc4.i686.rpm

samba4-winbind-krb5-locator-4.0.0-55.el6.rc4.i686.rpm

 

x86_64:

samba4-4.0.0-55.el6.rc4.x86_64.rpm

samba4-client-4.0.0-55.el6.rc4.x86_64.rpm

samba4-common-4.0.0-55.el6.rc4.x86_64.rpm

samba4-dc-4.0.0-55.el6.rc4.x86_64.rpm

samba4-dc-libs-4.0.0-55.el6.rc4.x86_64.rpm

samba4-debuginfo-4.0.0-55.el6.rc4.x86_64.rpm

samba4-devel-4.0.0-55.el6.rc4.x86_64.rpm

samba4-libs-4.0.0-55.el6.rc4.x86_64.rpm

samba4-pidl-4.0.0-55.el6.rc4.x86_64.rpm

samba4-python-4.0.0-55.el6.rc4.x86_64.rpm

samba4-swat-4.0.0-55.el6.rc4.x86_64.rpm

samba4-test-4.0.0-55.el6.rc4.x86_64.rpm

samba4-winbind-4.0.0-55.el6.rc4.x86_64.rpm

samba4-winbind-clients-4.0.0-55.el6.rc4.x86_64.rpm

samba4-winbind-krb5-locator-4.0.0-55.el6.rc4.x86_64.rpm

 

These packages are GPG signed by Red Hat for security. Our key and

details on how to verify the signature are available from

https://access.redhat.com/security/team/key/#package

 

7. References:

 

https://www.redhat.com/security/data/cve/CVE-2012-1182.html

https://access.redhat.com/security/updates/classification/#moderate

https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/6/html/6.4_Release_Notes/index.html

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2013 Red Hat, Inc.

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