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Bug 1072792 - (CVE-2013-4496) CVE-2013-4496 samba: Password lockout not enforced for SAMR password changes
CVE-2013-4496 samba: Password lockout not enforced for SAMR password changes
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20140312,repor...
: Security
Depends On: 1072804 1073352 1073353 1073356 1073357 1073905 1073913 1075429
Blocks: 1044102
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Reported: 2014-03-05 03:56 EST by Huzaifa S. Sidhpurwala
Modified: 2015-11-25 05:01 EST (History)
11 users (show)

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Doc Type: Bug Fix
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Last Closed: 2015-01-26 17:27:39 EST
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RHEL 7.3 requirements from Atomic Host:


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Description Huzaifa S. Sidhpurwala 2014-03-05 03:56:36 EST
From upstream samba advisory:

Samba versions 3.4.0 and above allow the administrator to implement locking out Samba accounts after a number of bad password attempts. 

However, all released versions of Samba did not implement this check for password changes, such as are available over multiple SAMR and RAP interfaces, allowing password guessing attacks. 

Most sites do not configure the bad password lockout feature.  Typically it is only enabled when Samba is configured as a Domain Controller, so most file server deployments are not impacted. 

This flaw only affects samba when deployed as a Primary Domain Controller.

Upstream bug:
https://bugzilla.samba.org/show_bug.cgi?id=10245
Comment 7 Huzaifa S. Sidhpurwala 2014-03-12 02:11:29 EDT
Public via:

http://www.samba.org/samba/security/CVE-2013-4496
Comment 8 Huzaifa S. Sidhpurwala 2014-03-12 02:13:42 EDT
Created samba tracking bugs for this issue:

Affects: fedora-all [bug 1075429]
Comment 9 Fedora Update System 2014-03-15 11:15:29 EDT
samba-4.1.6-1.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 10 Huzaifa S. Sidhpurwala 2014-03-24 00:53:21 EDT
Acknowledgements:

Red Hat would like to thank the Samba project for reporting this issue.
Upstream acknowledges Andrew Bartlett as the original reporter.
Comment 11 errata-xmlrpc 2014-03-25 10:09:59 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6

Via RHSA-2014:0330 https://rhn.redhat.com/errata/RHSA-2014-0330.html
Comment 12 Fedora Update System 2014-03-27 23:18:32 EDT
samba-4.0.16-1.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 13 errata-xmlrpc 2014-04-09 13:43:40 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2014:0383 https://rhn.redhat.com/errata/RHSA-2014-0383.html

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