-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: samba security and bug fix update Advisory ID: RHSA-2017:0662-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2017-0662.html Issue date: 2017-03-21 CVE Names: CVE-2016-2125 CVE-2016-2126 ===================================================================== 1. Summary: An update for samba 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 Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64 3. Description: 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. 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/): 1327697 - schannel connections fail to the DC because netlogon credentials are not updated correctly 1372611 - NetAPP SMB servers don't negotiate NTLMSSP_SIGN for SESSION KEY setup 1403114 - CVE-2016-2125 samba: Unconditional privilege delegation to Kerberos servers in trusted realms 1403115 - CVE-2016-2126 samba: Flaws in Kerberos PAC validation can trigger privilege elevation 1413672 - BADLOCK REGRESSION: Member fails to authenticate against nt4_dc, if the member changes it secret 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: samba-3.6.23-41.el6.src.rpm i386: libsmbclient-3.6.23-41.el6.i686.rpm samba-client-3.6.23-41.el6.i686.rpm samba-common-3.6.23-41.el6.i686.rpm samba-debuginfo-3.6.23-41.el6.i686.rpm samba-winbind-3.6.23-41.el6.i686.rpm samba-winbind-clients-3.6.23-41.el6.i686.rpm x86_64: libsmbclient-3.6.23-41.el6.i686.rpm libsmbclient-3.6.23-41.el6.x86_64.rpm samba-client-3.6.23-41.el6.x86_64.rpm samba-common-3.6.23-41.el6.i686.rpm samba-common-3.6.23-41.el6.x86_64.rpm samba-debuginfo-3.6.23-41.el6.i686.rpm samba-debuginfo-3.6.23-41.el6.x86_64.rpm samba-winbind-3.6.23-41.el6.x86_64.rpm samba-winbind-clients-3.6.23-41.el6.i686.rpm samba-winbind-clients-3.6.23-41.el6.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): i386: libsmbclient-devel-3.6.23-41.el6.i686.rpm samba-3.6.23-41.el6.i686.rpm samba-debuginfo-3.6.23-41.el6.i686.rpm samba-doc-3.6.23-41.el6.i686.rpm samba-domainjoin-gui-3.6.23-41.el6.i686.rpm samba-swat-3.6.23-41.el6.i686.rpm samba-winbind-devel-3.6.23-41.el6.i686.rpm samba-winbind-krb5-locator-3.6.23-41.el6.i686.rpm x86_64: libsmbclient-devel-3.6.23-41.el6.i686.rpm libsmbclient-devel-3.6.23-41.el6.x86_64.rpm samba-3.6.23-41.el6.x86_64.rpm samba-debuginfo-3.6.23-41.el6.i686.rpm samba-debuginfo-3.6.23-41.el6.x86_64.rpm samba-doc-3.6.23-41.el6.x86_64.rpm samba-domainjoin-gui-3.6.23-41.el6.x86_64.rpm samba-glusterfs-3.6.23-41.el6.x86_64.rpm samba-swat-3.6.23-41.el6.x86_64.rpm samba-winbind-devel-3.6.23-41.el6.i686.rpm samba-winbind-devel-3.6.23-41.el6.x86_64.rpm samba-winbind-krb5-locator-3.6.23-41.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: samba-3.6.23-41.el6.src.rpm x86_64: samba-client-3.6.23-41.el6.x86_64.rpm samba-common-3.6.23-41.el6.i686.rpm samba-common-3.6.23-41.el6.x86_64.rpm samba-debuginfo-3.6.23-41.el6.i686.rpm samba-debuginfo-3.6.23-41.el6.x86_64.rpm samba-winbind-3.6.23-41.el6.x86_64.rpm samba-winbind-clients-3.6.23-41.el6.i686.rpm samba-winbind-clients-3.6.23-41.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): x86_64: libsmbclient-3.6.23-41.el6.i686.rpm libsmbclient-3.6.23-41.el6.x86_64.rpm libsmbclient-devel-3.6.23-41.el6.i686.rpm libsmbclient-devel-3.6.23-41.el6.x86_64.rpm samba-3.6.23-41.el6.x86_64.rpm samba-debuginfo-3.6.23-41.el6.i686.rpm samba-debuginfo-3.6.23-41.el6.x86_64.rpm samba-doc-3.6.23-41.el6.x86_64.rpm samba-domainjoin-gui-3.6.23-41.el6.x86_64.rpm samba-glusterfs-3.6.23-41.el6.x86_64.rpm samba-swat-3.6.23-41.el6.x86_64.rpm samba-winbind-devel-3.6.23-41.el6.i686.rpm samba-winbind-devel-3.6.23-41.el6.x86_64.rpm samba-winbind-krb5-locator-3.6.23-41.el6.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: samba-3.6.23-41.el6.src.rpm i386: libsmbclient-3.6.23-41.el6.i686.rpm samba-3.6.23-41.el6.i686.rpm samba-client-3.6.23-41.el6.i686.rpm samba-common-3.6.23-41.el6.i686.rpm samba-debuginfo-3.6.23-41.el6.i686.rpm samba-winbind-3.6.23-41.el6.i686.rpm samba-winbind-clients-3.6.23-41.el6.i686.rpm ppc64: libsmbclient-3.6.23-41.el6.ppc.rpm libsmbclient-3.6.23-41.el6.ppc64.rpm samba-3.6.23-41.el6.ppc64.rpm samba-client-3.6.23-41.el6.ppc64.rpm samba-common-3.6.23-41.el6.ppc.rpm samba-common-3.6.23-41.el6.ppc64.rpm samba-debuginfo-3.6.23-41.el6.ppc.rpm samba-debuginfo-3.6.23-41.el6.ppc64.rpm samba-winbind-3.6.23-41.el6.ppc64.rpm samba-winbind-clients-3.6.23-41.el6.ppc.rpm samba-winbind-clients-3.6.23-41.el6.ppc64.rpm s390x: libsmbclient-3.6.23-41.el6.s390.rpm libsmbclient-3.6.23-41.el6.s390x.rpm samba-3.6.23-41.el6.s390x.rpm samba-client-3.6.23-41.el6.s390x.rpm samba-common-3.6.23-41.el6.s390.rpm samba-common-3.6.23-41.el6.s390x.rpm samba-debuginfo-3.6.23-41.el6.s390.rpm samba-debuginfo-3.6.23-41.el6.s390x.rpm samba-winbind-3.6.23-41.el6.s390x.rpm samba-winbind-clients-3.6.23-41.el6.s390.rpm samba-winbind-clients-3.6.23-41.el6.s390x.rpm x86_64: libsmbclient-3.6.23-41.el6.i686.rpm libsmbclient-3.6.23-41.el6.x86_64.rpm samba-3.6.23-41.el6.x86_64.rpm samba-client-3.6.23-41.el6.x86_64.rpm samba-common-3.6.23-41.el6.i686.rpm samba-common-3.6.23-41.el6.x86_64.rpm samba-debuginfo-3.6.23-41.el6.i686.rpm samba-debuginfo-3.6.23-41.el6.x86_64.rpm samba-winbind-3.6.23-41.el6.x86_64.rpm samba-winbind-clients-3.6.23-41.el6.i686.rpm samba-winbind-clients-3.6.23-41.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): i386: libsmbclient-devel-3.6.23-41.el6.i686.rpm samba-debuginfo-3.6.23-41.el6.i686.rpm samba-doc-3.6.23-41.el6.i686.rpm samba-domainjoin-gui-3.6.23-41.el6.i686.rpm samba-swat-3.6.23-41.el6.i686.rpm samba-winbind-devel-3.6.23-41.el6.i686.rpm samba-winbind-krb5-locator-3.6.23-41.el6.i686.rpm ppc64: libsmbclient-devel-3.6.23-41.el6.ppc.rpm libsmbclient-devel-3.6.23-41.el6.ppc64.rpm samba-debuginfo-3.6.23-41.el6.ppc.rpm samba-debuginfo-3.6.23-41.el6.ppc64.rpm samba-doc-3.6.23-41.el6.ppc64.rpm samba-domainjoin-gui-3.6.23-41.el6.ppc64.rpm samba-swat-3.6.23-41.el6.ppc64.rpm samba-winbind-devel-3.6.23-41.el6.ppc.rpm samba-winbind-devel-3.6.23-41.el6.ppc64.rpm samba-winbind-krb5-locator-3.6.23-41.el6.ppc64.rpm s390x: libsmbclient-devel-3.6.23-41.el6.s390.rpm libsmbclient-devel-3.6.23-41.el6.s390x.rpm samba-debuginfo-3.6.23-41.el6.s390.rpm samba-debuginfo-3.6.23-41.el6.s390x.rpm samba-doc-3.6.23-41.el6.s390x.rpm samba-domainjoin-gui-3.6.23-41.el6.s390x.rpm samba-swat-3.6.23-41.el6.s390x.rpm samba-winbind-devel-3.6.23-41.el6.s390.rpm samba-winbind-devel-3.6.23-41.el6.s390x.rpm samba-winbind-krb5-locator-3.6.23-41.el6.s390x.rpm x86_64: libsmbclient-devel-3.6.23-41.el6.i686.rpm libsmbclient-devel-3.6.23-41.el6.x86_64.rpm samba-debuginfo-3.6.23-41.el6.i686.rpm samba-debuginfo-3.6.23-41.el6.x86_64.rpm samba-doc-3.6.23-41.el6.x86_64.rpm samba-domainjoin-gui-3.6.23-41.el6.x86_64.rpm samba-glusterfs-3.6.23-41.el6.x86_64.rpm samba-swat-3.6.23-41.el6.x86_64.rpm samba-winbind-devel-3.6.23-41.el6.i686.rpm samba-winbind-devel-3.6.23-41.el6.x86_64.rpm samba-winbind-krb5-locator-3.6.23-41.el6.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: samba-3.6.23-41.el6.src.rpm i386: libsmbclient-3.6.23-41.el6.i686.rpm samba-3.6.23-41.el6.i686.rpm samba-client-3.6.23-41.el6.i686.rpm samba-common-3.6.23-41.el6.i686.rpm samba-debuginfo-3.6.23-41.el6.i686.rpm samba-winbind-3.6.23-41.el6.i686.rpm samba-winbind-clients-3.6.23-41.el6.i686.rpm x86_64: libsmbclient-3.6.23-41.el6.i686.rpm libsmbclient-3.6.23-41.el6.x86_64.rpm samba-3.6.23-41.el6.x86_64.rpm samba-client-3.6.23-41.el6.x86_64.rpm samba-common-3.6.23-41.el6.i686.rpm samba-common-3.6.23-41.el6.x86_64.rpm samba-debuginfo-3.6.23-41.el6.i686.rpm samba-debuginfo-3.6.23-41.el6.x86_64.rpm samba-winbind-3.6.23-41.el6.x86_64.rpm samba-winbind-clients-3.6.23-41.el6.i686.rpm samba-winbind-clients-3.6.23-41.el6.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): i386: libsmbclient-devel-3.6.23-41.el6.i686.rpm samba-debuginfo-3.6.23-41.el6.i686.rpm samba-doc-3.6.23-41.el6.i686.rpm samba-domainjoin-gui-3.6.23-41.el6.i686.rpm samba-swat-3.6.23-41.el6.i686.rpm samba-winbind-devel-3.6.23-41.el6.i686.rpm samba-winbind-krb5-locator-3.6.23-41.el6.i686.rpm x86_64: libsmbclient-devel-3.6.23-41.el6.i686.rpm libsmbclient-devel-3.6.23-41.el6.x86_64.rpm samba-debuginfo-3.6.23-41.el6.i686.rpm samba-debuginfo-3.6.23-41.el6.x86_64.rpm samba-doc-3.6.23-41.el6.x86_64.rpm samba-domainjoin-gui-3.6.23-41.el6.x86_64.rpm samba-glusterfs-3.6.23-41.el6.x86_64.rpm samba-swat-3.6.23-41.el6.x86_64.rpm samba-winbind-devel-3.6.23-41.el6.i686.rpm samba-winbind-devel-3.6.23-41.el6.x86_64.rpm samba-winbind-krb5-locator-3.6.23-41.el6.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/ 7. References: https://access.redhat.com/security/cve/CVE-2016-2125 https://access.redhat.com/security/cve/CVE-2016-2126 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.9_Release_Notes/index.html https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.9_Technical_Notes/index.html https://www.samba.org/samba/security/CVE-2016-2125.html https://www.samba.org/samba/security/CVE-2016-2126.html 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2017 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFY0PTJXlSAg2UNWIIRAj7/AKC4d9EjAtWkRfzZcMTNjs9QSyA7WwCeO3zK 2t8dVsQW4eJIwkQvC5dEpS0= =OzKU -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce