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centosCentOS ProjectCESA-2017:0662
HistoryMar 24, 2017 - 3:43 p.m.

libsmbclient, samba security update

2017-03-2415:43:17
CentOS Project
lists.centos.org
64

CVSS2

4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:N/I:N/A:P

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.006

Percentile

78.2%

JSON

CentOS Errata and Security Advisory CESA-2017:0662

Samba is an open-source implementation of the Server Message Block (SMB) protocol and the related Common Internet File System (CIFS) protocol, which allow PC-compatible machines to share files, printers, and various information.

Security Fix(es):

  • It was found that Samba always requested forwardable tickets when using Kerberos authentication. A service to which Samba authenticated using Kerberos could subsequently use the ticket to impersonate Samba to other services or domain users. (CVE-2016-2125)

  • A flaw was found in the way Samba handled PAC (Privilege Attribute Certificate) checksums. A remote, authenticated attacker could use this flaw to crash the winbindd process. (CVE-2016-2126)

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.9 Release Notes and Red Hat Enterprise Linux 6.9 Technical Notes linked from the References section.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-cr-announce/2017-March/030197.html

Affected packages:
libsmbclient
libsmbclient-devel
samba
samba-client
samba-common
samba-doc
samba-domainjoin-gui
samba-glusterfs
samba-swat
samba-winbind
samba-winbind-clients
samba-winbind-devel
samba-winbind-krb5-locator

Upstream details at:
https://access.redhat.com/errata/RHSA-2017:0662

OSVersionArchitecturePackageVersionFilename
CentOS6i686libsmbclient< 3.6.23-41.el6libsmbclient-3.6.23-41.el6.i686.rpm
CentOS6i686libsmbclient-devel< 3.6.23-41.el6libsmbclient-devel-3.6.23-41.el6.i686.rpm
CentOS6i686samba< 3.6.23-41.el6samba-3.6.23-41.el6.i686.rpm
CentOS6i686samba-client< 3.6.23-41.el6samba-client-3.6.23-41.el6.i686.rpm
CentOS6i686samba-common< 3.6.23-41.el6samba-common-3.6.23-41.el6.i686.rpm
CentOS6i686samba-doc< 3.6.23-41.el6samba-doc-3.6.23-41.el6.i686.rpm
CentOS6i686samba-domainjoin-gui< 3.6.23-41.el6samba-domainjoin-gui-3.6.23-41.el6.i686.rpm
CentOS6i686samba-swat< 3.6.23-41.el6samba-swat-3.6.23-41.el6.i686.rpm
CentOS6i686samba-winbind< 3.6.23-41.el6samba-winbind-3.6.23-41.el6.i686.rpm
CentOS6i686samba-winbind-clients< 3.6.23-41.el6samba-winbind-clients-3.6.23-41.el6.i686.rpm
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CVSS2

4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:N/I:N/A:P

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.006

Percentile

78.2%

JSON
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