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Bug 1311902 - (CVE-2016-2111) CVE-2016-2111 samba: Spoofing vulnerability when domain controller is configured
CVE-2016-2111 samba: Spoofing vulnerability when domain controller is configured
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
: ---
: ---
Assigned To: Red Hat Product Security
impact=moderate,public=20160412,repor...
: Security
Depends On: 1322684 1322685 1322686 1322687 1322688 1322689 1322690 1322691 1322692 1324800 1324801 1324802 1324803 1324804 1324805 1324806 1324807 1325382 1325383 1325384 1325385 1325645 1325649 1325650 1325651 1325832 1325838 1326453
Blocks: 1311915
  Show dependency tree / graph
 
Reported: 2016-02-25 04:57 EST by Adam Mariš
Modified: 2016-04-19 01:28 EDT (History)
16 users (show)

See Also:
Fixed In Version: samba 4.4.1, samba 4.3.7, samba 4.2.10
Doc Type: Bug Fix
Doc Text:
It was discovered that Samba configured as a Domain Controller would establish a secure communication channel with a machine using a spoofed computer name. A remote attacker able to observe network traffic could use this flaw to obtain session-related information about the spoofed machine.
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Clone Of:
Environment:
Last Closed: 2016-04-19 01:28:31 EDT
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Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Add an attachment (proposed patch, testcase, etc.)


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2016:0611 normal SHIPPED_LIVE Critical: samba security update 2016-04-13 07:04:02 EDT
Red Hat Product Errata RHSA-2016:0612 normal SHIPPED_LIVE Critical: samba and samba4 security, bug fix, and enhancement update 2016-04-13 01:06:20 EDT
Red Hat Product Errata RHSA-2016:0613 normal SHIPPED_LIVE Critical: samba3x security update 2016-04-12 17:37:46 EDT
Red Hat Product Errata RHSA-2016:0614 normal SHIPPED_LIVE Critical: samba security, bug fix, and enhancement update 2016-04-12 21:38:55 EDT
Red Hat Product Errata RHSA-2016:0618 normal SHIPPED_LIVE Critical: samba security, bug fix, and enhancement update 2016-04-13 01:25:52 EDT
Red Hat Product Errata RHSA-2016:0619 normal SHIPPED_LIVE Critical: samba security update 2016-04-12 19:33:20 EDT
Red Hat Product Errata RHSA-2016:0620 normal SHIPPED_LIVE Critical: samba4 security, bug fix, and enhancement update 2016-04-12 21:20:34 EDT
Red Hat Product Errata RHSA-2016:0621 normal SHIPPED_LIVE Important: samba security update 2016-04-14 11:00:02 EDT
Red Hat Product Errata RHSA-2016:0623 normal SHIPPED_LIVE Important: samba security update 2016-04-14 10:59:38 EDT
Red Hat Product Errata RHSA-2016:0624 normal SHIPPED_LIVE Critical: samba3x security update 2016-04-12 19:15:40 EDT
Red Hat Product Errata RHSA-2016:0625 normal SHIPPED_LIVE Important: samba security update 2016-04-14 10:59:29 EDT

  None (edit)
Description Adam Mariš 2016-02-25 04:57:39 EST 
An authentication flaw was found in Samba. When Samba is configured to act as a Domain Controller, it allows remote attackers to spoof the computer name of a secure channel's endpoints. The attacker could exploit this flaw to obtain sensitive session information by running a crafted application and leveraging the ability to sniff network traffic.

This flaw only affects Samba running as a classic primary domain controller, classic backup domain controller, or Active Directory domain controller. Note: This flaw is referred to as CVE-2015-0005 for Microsoft Windows Server.
Comment 6 Huzaifa S. Sidhpurwala 2016-04-11 01:35:09 EDT 
Acknowledgements:

Name: the Samba project
Comment 7 Huzaifa S. Sidhpurwala 2016-04-11 01:45:04 EDT 
External Reference:

https://access.redhat.com/articles/2243351
Comment 10 Huzaifa S. Sidhpurwala 2016-04-12 13:10:15 EDT 
Public via:

https://www.samba.org/samba/security/CVE-2016-2111.html
Comment 11 Siddharth Sharma 2016-04-12 13:28:19 EDT 
Created samba tracking bugs for this issue:

Affects: fedora-all [bug 1326453]
Comment 12 errata-xmlrpc 2016-04-12 13:34:13 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2016:0611 https://rhn.redhat.com/errata/RHSA-2016-0611.html
Comment 13 errata-xmlrpc 2016-04-12 13:38:53 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 5

Via RHSA-2016:0613 https://rhn.redhat.com/errata/RHSA-2016-0613.html
Comment 14 errata-xmlrpc 2016-04-12 13:39:56 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 5

Via RHSA-2016:0621 https://rhn.redhat.com/errata/RHSA-2016-0621.html
Comment 15 errata-xmlrpc 2016-04-12 15:16:38 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 5.6 Long Life
  Red Hat Enterprise Linux 5.9 Long Life

Via RHSA-2016:0624 https://rhn.redhat.com/errata/RHSA-2016-0624.html
Comment 16 errata-xmlrpc 2016-04-12 15:18:01 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 5.6 Long Life
  Red Hat Enterprise Linux 5.9 Long Life

Via RHSA-2016:0623 https://rhn.redhat.com/errata/RHSA-2016-0623.html
Comment 17 errata-xmlrpc 2016-04-12 15:33:57 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.4 Advanced Update Support
  Red Hat Enterprise Linux 6.2 Advanced Update Support
  Red Hat Enterprise Linux 6.6 Extended Update Support
  Red Hat Enterprise Linux 6.5 Advanced Update Support

Via RHSA-2016:0619 https://rhn.redhat.com/errata/RHSA-2016-0619.html
Comment 18 errata-xmlrpc 2016-04-12 17:21:13 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 4 Extended Lifecycle Support

Via RHSA-2016:0625 https://rhn.redhat.com/errata/RHSA-2016-0625.html
Comment 19 errata-xmlrpc 2016-04-12 17:24:29 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.6 Extended Update Support
  Red Hat Enterprise Linux 6.5 Advanced Update Support
  Red Hat Enterprise Linux 6.4 Advanced Update Support
  Red Hat Enterprise Linux 6.2 Advanced Update Support

Via RHSA-2016:0620 https://rhn.redhat.com/errata/RHSA-2016-0620.html
Comment 20 errata-xmlrpc 2016-04-12 17:39:34 EDT 
This issue has been addressed in the following products:

  Red Hat Gluster Storage 3.1 for RHEL 7
  Red Hat Gluster Storage 3.1 for RHEL 6

Via RHSA-2016:0614 https://rhn.redhat.com/errata/RHSA-2016-0614.html
Comment 21 errata-xmlrpc 2016-04-12 21:07:14 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7
  Red Hat Enterprise Linux 6

Via RHSA-2016:0612 https://rhn.redhat.com/errata/RHSA-2016-0612.html
Comment 22 errata-xmlrpc 2016-04-12 21:26:54 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.1 Extended Update Support

Via RHSA-2016:0618 https://rhn.redhat.com/errata/RHSA-2016-0618.html
Comment 23 Fedora Update System 2016-04-13 16:21:20 EDT 
samba-4.3.8-0.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 24 Fedora Update System 2016-04-14 00:21:04 EDT 
samba-4.2.11-0.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
Comment 25 Fedora Update System 2016-04-14 23:16:50 EDT 
samba-4.4.2-1.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
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