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===================================================================== Red Hat Security Advisory
Synopsis: Moderate: samba security update Advisory ID: RHSA-2017:2789-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2017:2789 Issue date: 2017-09-21 CVE Names: CVE-2017-12150 CVE-2017-12163 CVE-2017-2619 =====================================================================
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):
* A race condition was found in samba server. A malicious samba client could use this flaw to access files and directories in areas of the server file system not exported under the share definitions. (CVE-2017-2619)
* It was found that samba did not enforce "SMB signing" when certain configuration options were enabled. A remote attacker could launch a man-in-the-middle attack and retrieve information in plain-text. (CVE-2017-12150)
* An information leak flaw was found in the way SMB1 protocol was implemented by Samba. A malicious client could use this flaw to dump server memory contents to a file on the samba share or to a shared printer, though the exact area of server memory cannot be controlled by the attacker. (CVE-2017-12163)
Red Hat would like to thank the Samba project for reporting CVE-2017-2619 and CVE-2017-12150 and Yihan Lian and Zhibin Hu (Qihoo 360 GearTeam), Stefan Metzmacher (SerNet), and Jeremy Allison (Google) for reporting CVE-2017-12163. Upstream acknowledges Jann Horn (Google) as the original reporter of CVE-2017-2619; and Stefan Metzmacher (SerNet) as the original reporter of CVE-2017-12150.
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/):
1429472 - CVE-2017-2619 samba: symlink race permits opening files outside share directory 1488400 - CVE-2017-12150 samba: Some code path don't enforce smb signing, when they should 1491206 - CVE-2017-12163 Samba: Server memory information leak over SMB1
6. Package List:
Red Hat Enterprise Linux Desktop (v. 6):
Source: samba-3.6.23-45.el6_9.src.rpm
i386: libsmbclient-3.6.23-45.el6_9.i686.rpm samba-client-3.6.23-45.el6_9.i686.rpm samba-common-3.6.23-45.el6_9.i686.rpm samba-debuginfo-3.6.23-45.el6_9.i686.rpm samba-winbind-3.6.23-45.el6_9.i686.rpm samba-winbind-clients-3.6.23-45.el6_9.i686.rpm
x86_64: libsmbclient-3.6.23-45.el6_9.i686.rpm libsmbclient-3.6.23-45.el6_9.x86_64.rpm samba-client-3.6.23-45.el6_9.x86_64.rpm samba-common-3.6.23-45.el6_9.i686.rpm samba-common-3.6.23-45.el6_9.x86_64.rpm samba-debuginfo-3.6.23-45.el6_9.i686.rpm samba-debuginfo-3.6.23-45.el6_9.x86_64.rpm samba-winbind-3.6.23-45.el6_9.x86_64.rpm samba-winbind-clients-3.6.23-45.el6_9.i686.rpm samba-winbind-clients-3.6.23-45.el6_9.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
i386: libsmbclient-devel-3.6.23-45.el6_9.i686.rpm samba-3.6.23-45.el6_9.i686.rpm samba-debuginfo-3.6.23-45.el6_9.i686.rpm samba-doc-3.6.23-45.el6_9.i686.rpm samba-domainjoin-gui-3.6.23-45.el6_9.i686.rpm samba-swat-3.6.23-45.el6_9.i686.rpm samba-winbind-devel-3.6.23-45.el6_9.i686.rpm samba-winbind-krb5-locator-3.6.23-45.el6_9.i686.rpm
x86_64: libsmbclient-devel-3.6.23-45.el6_9.i686.rpm libsmbclient-devel-3.6.23-45.el6_9.x86_64.rpm samba-3.6.23-45.el6_9.x86_64.rpm samba-debuginfo-3.6.23-45.el6_9.i686.rpm samba-debuginfo-3.6.23-45.el6_9.x86_64.rpm samba-doc-3.6.23-45.el6_9.x86_64.rpm samba-domainjoin-gui-3.6.23-45.el6_9.x86_64.rpm samba-glusterfs-3.6.23-45.el6_9.x86_64.rpm samba-swat-3.6.23-45.el6_9.x86_64.rpm samba-winbind-devel-3.6.23-45.el6_9.i686.rpm samba-winbind-devel-3.6.23-45.el6_9.x86_64.rpm samba-winbind-krb5-locator-3.6.23-45.el6_9.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source: samba-3.6.23-45.el6_9.src.rpm
x86_64: samba-client-3.6.23-45.el6_9.x86_64.rpm samba-common-3.6.23-45.el6_9.i686.rpm samba-common-3.6.23-45.el6_9.x86_64.rpm samba-debuginfo-3.6.23-45.el6_9.i686.rpm samba-debuginfo-3.6.23-45.el6_9.x86_64.rpm samba-winbind-3.6.23-45.el6_9.x86_64.rpm samba-winbind-clients-3.6.23-45.el6_9.i686.rpm samba-winbind-clients-3.6.23-45.el6_9.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
x86_64: libsmbclient-3.6.23-45.el6_9.i686.rpm libsmbclient-3.6.23-45.el6_9.x86_64.rpm libsmbclient-devel-3.6.23-45.el6_9.i686.rpm libsmbclient-devel-3.6.23-45.el6_9.x86_64.rpm samba-3.6.23-45.el6_9.x86_64.rpm samba-debuginfo-3.6.23-45.el6_9.i686.rpm samba-debuginfo-3.6.23-45.el6_9.x86_64.rpm samba-doc-3.6.23-45.el6_9.x86_64.rpm samba-domainjoin-gui-3.6.23-45.el6_9.x86_64.rpm samba-glusterfs-3.6.23-45.el6_9.x86_64.rpm samba-swat-3.6.23-45.el6_9.x86_64.rpm samba-winbind-devel-3.6.23-45.el6_9.i686.rpm samba-winbind-devel-3.6.23-45.el6_9.x86_64.rpm samba-winbind-krb5-locator-3.6.23-45.el6_9.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source: samba-3.6.23-45.el6_9.src.rpm
i386: libsmbclient-3.6.23-45.el6_9.i686.rpm samba-3.6.23-45.el6_9.i686.rpm samba-client-3.6.23-45.el6_9.i686.rpm samba-common-3.6.23-45.el6_9.i686.rpm samba-debuginfo-3.6.23-45.el6_9.i686.rpm samba-winbind-3.6.23-45.el6_9.i686.rpm samba-winbind-clients-3.6.23-45.el6_9.i686.rpm
ppc64: libsmbclient-3.6.23-45.el6_9.ppc.rpm libsmbclient-3.6.23-45.el6_9.ppc64.rpm samba-3.6.23-45.el6_9.ppc64.rpm samba-client-3.6.23-45.el6_9.ppc64.rpm samba-common-3.6.23-45.el6_9.ppc.rpm samba-common-3.6.23-45.el6_9.ppc64.rpm samba-debuginfo-3.6.23-45.el6_9.ppc.rpm samba-debuginfo-3.6.23-45.el6_9.ppc64.rpm samba-winbind-3.6.23-45.el6_9.ppc64.rpm samba-winbind-clients-3.6.23-45.el6_9.ppc.rpm samba-winbind-clients-3.6.23-45.el6_9.ppc64.rpm
s390x: libsmbclient-3.6.23-45.el6_9.s390.rpm libsmbclient-3.6.23-45.el6_9.s390x.rpm samba-3.6.23-45.el6_9.s390x.rpm samba-client-3.6.23-45.el6_9.s390x.rpm samba-common-3.6.23-45.el6_9.s390.rpm samba-common-3.6.23-45.el6_9.s390x.rpm samba-debuginfo-3.6.23-45.el6_9.s390.rpm samba-debuginfo-3.6.23-45.el6_9.s390x.rpm samba-winbind-3.6.23-45.el6_9.s390x.rpm samba-winbind-clients-3.6.23-45.el6_9.s390.rpm samba-winbind-clients-3.6.23-45.el6_9.s390x.rpm
x86_64: libsmbclient-3.6.23-45.el6_9.i686.rpm libsmbclient-3.6.23-45.el6_9.x86_64.rpm samba-3.6.23-45.el6_9.x86_64.rpm samba-client-3.6.23-45.el6_9.x86_64.rpm samba-common-3.6.23-45.el6_9.i686.rpm samba-common-3.6.23-45.el6_9.x86_64.rpm samba-debuginfo-3.6.23-45.el6_9.i686.rpm samba-debuginfo-3.6.23-45.el6_9.x86_64.rpm samba-winbind-3.6.23-45.el6_9.x86_64.rpm samba-winbind-clients-3.6.23-45.el6_9.i686.rpm samba-winbind-clients-3.6.23-45.el6_9.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
i386: libsmbclient-devel-3.6.23-45.el6_9.i686.rpm samba-debuginfo-3.6.23-45.el6_9.i686.rpm samba-doc-3.6.23-45.el6_9.i686.rpm samba-domainjoin-gui-3.6.23-45.el6_9.i686.rpm samba-swat-3.6.23-45.el6_9.i686.rpm samba-winbind-devel-3.6.23-45.el6_9.i686.rpm samba-winbind-krb5-locator-3.6.23-45.el6_9.i686.rpm
ppc64: libsmbclient-devel-3.6.23-45.el6_9.ppc.rpm libsmbclient-devel-3.6.23-45.el6_9.ppc64.rpm samba-debuginfo-3.6.23-45.el6_9.ppc.rpm samba-debuginfo-3.6.23-45.el6_9.ppc64.rpm samba-doc-3.6.23-45.el6_9.ppc64.rpm samba-domainjoin-gui-3.6.23-45.el6_9.ppc64.rpm samba-swat-3.6.23-45.el6_9.ppc64.rpm samba-winbind-devel-3.6.23-45.el6_9.ppc.rpm samba-winbind-devel-3.6.23-45.el6_9.ppc64.rpm samba-winbind-krb5-locator-3.6.23-45.el6_9.ppc64.rpm
s390x: libsmbclient-devel-3.6.23-45.el6_9.s390.rpm libsmbclient-devel-3.6.23-45.el6_9.s390x.rpm samba-debuginfo-3.6.23-45.el6_9.s390.rpm samba-debuginfo-3.6.23-45.el6_9.s390x.rpm samba-doc-3.6.23-45.el6_9.s390x.rpm samba-domainjoin-gui-3.6.23-45.el6_9.s390x.rpm samba-swat-3.6.23-45.el6_9.s390x.rpm samba-winbind-devel-3.6.23-45.el6_9.s390.rpm samba-winbind-devel-3.6.23-45.el6_9.s390x.rpm samba-winbind-krb5-locator-3.6.23-45.el6_9.s390x.rpm
x86_64: libsmbclient-devel-3.6.23-45.el6_9.i686.rpm libsmbclient-devel-3.6.23-45.el6_9.x86_64.rpm samba-debuginfo-3.6.23-45.el6_9.i686.rpm samba-debuginfo-3.6.23-45.el6_9.x86_64.rpm samba-doc-3.6.23-45.el6_9.x86_64.rpm samba-domainjoin-gui-3.6.23-45.el6_9.x86_64.rpm samba-glusterfs-3.6.23-45.el6_9.x86_64.rpm samba-swat-3.6.23-45.el6_9.x86_64.rpm samba-winbind-devel-3.6.23-45.el6_9.i686.rpm samba-winbind-devel-3.6.23-45.el6_9.x86_64.rpm samba-winbind-krb5-locator-3.6.23-45.el6_9.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source: samba-3.6.23-45.el6_9.src.rpm
i386: libsmbclient-3.6.23-45.el6_9.i686.rpm samba-3.6.23-45.el6_9.i686.rpm samba-client-3.6.23-45.el6_9.i686.rpm samba-common-3.6.23-45.el6_9.i686.rpm samba-debuginfo-3.6.23-45.el6_9.i686.rpm samba-winbind-3.6.23-45.el6_9.i686.rpm samba-winbind-clients-3.6.23-45.el6_9.i686.rpm
x86_64: libsmbclient-3.6.23-45.el6_9.i686.rpm libsmbclient-3.6.23-45.el6_9.x86_64.rpm samba-3.6.23-45.el6_9.x86_64.rpm samba-client-3.6.23-45.el6_9.x86_64.rpm samba-common-3.6.23-45.el6_9.i686.rpm samba-common-3.6.23-45.el6_9.x86_64.rpm samba-debuginfo-3.6.23-45.el6_9.i686.rpm samba-debuginfo-3.6.23-45.el6_9.x86_64.rpm samba-winbind-3.6.23-45.el6_9.x86_64.rpm samba-winbind-clients-3.6.23-45.el6_9.i686.rpm samba-winbind-clients-3.6.23-45.el6_9.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
i386: libsmbclient-devel-3.6.23-45.el6_9.i686.rpm samba-debuginfo-3.6.23-45.el6_9.i686.rpm samba-doc-3.6.23-45.el6_9.i686.rpm samba-domainjoin-gui-3.6.23-45.el6_9.i686.rpm samba-swat-3.6.23-45.el6_9.i686.rpm samba-winbind-devel-3.6.23-45.el6_9.i686.rpm samba-winbind-krb5-locator-3.6.23-45.el6_9.i686.rpm
x86_64: libsmbclient-devel-3.6.23-45.el6_9.i686.rpm libsmbclient-devel-3.6.23-45.el6_9.x86_64.rpm samba-debuginfo-3.6.23-45.el6_9.i686.rpm samba-debuginfo-3.6.23-45.el6_9.x86_64.rpm samba-doc-3.6.23-45.el6_9.x86_64.rpm samba-domainjoin-gui-3.6.23-45.el6_9.x86_64.rpm samba-glusterfs-3.6.23-45.el6_9.x86_64.rpm samba-swat-3.6.23-45.el6_9.x86_64.rpm samba-winbind-devel-3.6.23-45.el6_9.i686.rpm samba-winbind-devel-3.6.23-45.el6_9.x86_64.rpm samba-winbind-krb5-locator-3.6.23-45.el6_9.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-2017-12150 https://access.redhat.com/security/cve/CVE-2017-12163 https://access.redhat.com/security/cve/CVE-2017-2619 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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