Sigurnosni nedostatak programskog paketa samba4

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by ncert - 26. srpnja 2016.26. srpnja 2016.0

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Red Hat Security Advisory

Synopsis: Moderate: samba4 security update
Advisory ID: RHSA-2016:1487-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-1487.html
Issue date: 2016-07-26
CVE Names: CVE-2016-2119
=====================================================================

1. Summary:

An update for samba4 is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) 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.

Security Fix(es):

* A flaw was found in the way Samba initiated signed DCE/RPC connections. A
man-in-the-middle attacker could use this flaw to downgrade the connection
to not use signing and therefore impersonate the server. (CVE-2016-2119)

Red Hat would like to thank the Samba project for reporting this issue.
Upstream acknowledges Stefan Metzmacher as the original reporter.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

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

After installing this update, the smb service will be restarted
automatically.

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

1351955 – CVE-2016-2119 samba: Client side SMB2/3 required signing can be downgraded

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
samba4-4.2.10-7.el6_8.src.rpm

i386:
samba4-4.2.10-7.el6_8.i686.rpm
samba4-client-4.2.10-7.el6_8.i686.rpm
samba4-common-4.2.10-7.el6_8.i686.rpm
samba4-dc-4.2.10-7.el6_8.i686.rpm
samba4-dc-libs-4.2.10-7.el6_8.i686.rpm
samba4-debuginfo-4.2.10-7.el6_8.i686.rpm
samba4-devel-4.2.10-7.el6_8.i686.rpm
samba4-libs-4.2.10-7.el6_8.i686.rpm
samba4-pidl-4.2.10-7.el6_8.i686.rpm
samba4-python-4.2.10-7.el6_8.i686.rpm
samba4-test-4.2.10-7.el6_8.i686.rpm
samba4-winbind-4.2.10-7.el6_8.i686.rpm
samba4-winbind-clients-4.2.10-7.el6_8.i686.rpm
samba4-winbind-krb5-locator-4.2.10-7.el6_8.i686.rpm

x86_64:
samba4-4.2.10-7.el6_8.x86_64.rpm
samba4-client-4.2.10-7.el6_8.x86_64.rpm
samba4-common-4.2.10-7.el6_8.x86_64.rpm
samba4-dc-4.2.10-7.el6_8.x86_64.rpm
samba4-dc-libs-4.2.10-7.el6_8.x86_64.rpm
samba4-debuginfo-4.2.10-7.el6_8.x86_64.rpm
samba4-devel-4.2.10-7.el6_8.x86_64.rpm
samba4-libs-4.2.10-7.el6_8.x86_64.rpm
samba4-pidl-4.2.10-7.el6_8.x86_64.rpm
samba4-python-4.2.10-7.el6_8.x86_64.rpm
samba4-test-4.2.10-7.el6_8.x86_64.rpm
samba4-winbind-4.2.10-7.el6_8.x86_64.rpm
samba4-winbind-clients-4.2.10-7.el6_8.x86_64.rpm
samba4-winbind-krb5-locator-4.2.10-7.el6_8.x86_64.rpm

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

Source:
samba4-4.2.10-7.el6_8.src.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
samba4-4.2.10-7.el6_8.src.rpm

ppc64:
samba4-4.2.10-7.el6_8.ppc64.rpm
samba4-client-4.2.10-7.el6_8.ppc64.rpm
samba4-common-4.2.10-7.el6_8.ppc64.rpm
samba4-dc-4.2.10-7.el6_8.ppc64.rpm
samba4-dc-libs-4.2.10-7.el6_8.ppc64.rpm
samba4-debuginfo-4.2.10-7.el6_8.ppc64.rpm
samba4-devel-4.2.10-7.el6_8.ppc64.rpm
samba4-libs-4.2.10-7.el6_8.ppc64.rpm
samba4-pidl-4.2.10-7.el6_8.ppc64.rpm
samba4-python-4.2.10-7.el6_8.ppc64.rpm
samba4-test-4.2.10-7.el6_8.ppc64.rpm
samba4-winbind-4.2.10-7.el6_8.ppc64.rpm
samba4-winbind-clients-4.2.10-7.el6_8.ppc64.rpm
samba4-winbind-krb5-locator-4.2.10-7.el6_8.ppc64.rpm

s390x:
samba4-4.2.10-7.el6_8.s390x.rpm
samba4-client-4.2.10-7.el6_8.s390x.rpm
samba4-common-4.2.10-7.el6_8.s390x.rpm
samba4-dc-4.2.10-7.el6_8.s390x.rpm
samba4-dc-libs-4.2.10-7.el6_8.s390x.rpm
samba4-debuginfo-4.2.10-7.el6_8.s390x.rpm
samba4-devel-4.2.10-7.el6_8.s390x.rpm
samba4-libs-4.2.10-7.el6_8.s390x.rpm
samba4-pidl-4.2.10-7.el6_8.s390x.rpm
samba4-python-4.2.10-7.el6_8.s390x.rpm
samba4-test-4.2.10-7.el6_8.s390x.rpm
samba4-winbind-4.2.10-7.el6_8.s390x.rpm
samba4-winbind-clients-4.2.10-7.el6_8.s390x.rpm
samba4-winbind-krb5-locator-4.2.10-7.el6_8.s390x.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
samba4-4.2.10-7.el6_8.src.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/

7. References:

https://access.redhat.com/security/cve/CVE-2016-2119
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

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