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Alerts This Week
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Red Hat Enterprise Linux 6/7 RHSA-2017:3261-01 Critical: Samba Issues

red hat
Calendar Grey November 27, 2017
Scroller Redhat
Crucial samba patch released for Red Hat Enterprise Linux versions 6 and 7, targeting severe memory security flaws.
An update for samba is now available for Red Hat Gluster Storage 3.3 for Red Hat Enterprise Linux 6 and Red Hat Gluster Storage 3.3 for Red Hat Enterprise Linux 7

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.

Summary

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 use-after-free flaw was found in the way samba servers handled certain SMB1 requests. An unauthenticated attacker could send specially-crafted SMB1 requests to cause the server to crash or execute arbitrary code. (CVE-2017-14746)
* A memory disclosure flaw was found in samba. An attacker could retrieve parts of server memory, which could contain potentially sensitive data, by sending specially-crafted requests to the samba server. (CVE-2017-15275)
Red Hat would like to thank the Samba project for reporting these issues. Upstream acknowledges Yihan Lian and Zhibin Hu (Qihoo 360 GearTeam) as the original reporter of CVE-2017-14746; and Volker Lendecke (SerNet and the Samba Team) as the original reporter of CVE-2017-15275.

Topics%20covered

Topics Covered

security advisory Red Hat DoS samba memory issue

References

https://access.redhat.com/security/cve/CVE-2017-14746 https://access.redhat.com/security/cve/CVE-2017-15275 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Gluster 3.3 Samba on RHEL-6:
Source: samba-4.6.3-9.el6rhs.src.rpm
noarch: samba-common-4.6.3-9.el6rhs.noarch.rpm samba-pidl-4.6.3-9.el6rhs.noarch.rpm
x86_64: ctdb-4.6.3-9.el6rhs.x86_64.rpm ctdb-tests-4.6.3-9.el6rhs.x86_64.rpm libsmbclient-4.6.3-9.el6rhs.x86_64.rpm libsmbclient-devel-4.6.3-9.el6rhs.x86_64.rpm libwbclient-4.6.3-9.el6rhs.x86_64.rpm libwbclient-devel-4.6.3-9.el6rhs.x86_64.rpm samba-4.6.3-9.el6rhs.x86_64.rpm samba-client-4.6.3-9.el6rhs.x86_64.rpm samba-client-libs-4.6.3-9.el6rhs.x86_64.rpm samba-common-libs-4.6.3-9.el6rhs.x86_64.rpm samba-common-tools-4.6.3-9.el6rhs.x86_64.rpm samba-dc-4.6.3-9.el6rhs.x86_64.rpm samba-dc-libs-4.6.3-9.el6rhs.x86_64.rpm samba-debuginfo-4.6.3-9.el6rhs.x86_64.rpm samba-devel-4.6.3-9.el6rhs.x86_64.rpm samba-krb5-printing-4.6.3-9.el6rhs.x86_64.rpm samba-libs-4.6.3-9.el6rhs.x86_64.rpm samba-python-4.6.3-9.el6rhs.x86_64.rpm samba-test-4.6.3-9.el6rhs.x86_64.rpm samba-test-libs-4.6.3-9.el6rhs.x86_64.rpm samba-vfs-glusterfs-4.6.3-9.el6rhs.x86_64.rpm samba-winbind-4.6.3-9.el6rhs.x86_64.rpm samba-winbind-clients-4.6.3-9.el6rhs.x86_64.rpm samba-winbind-krb5-locator-4.6.3-9.el6rhs.x86_64.rpm samba-winbind-modules-4.6.3-9.el6rhs.x86_64.rpm
Red Hat Gluster 3.3 Samba on RHEL-7:
Source: samba-4.6.3-9.el7rhgs.src.rpm
noarch:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2017:3261-01
Product: Red Hat Gluster Storage
Advisory URL: https://access.redhat.com/errata/RHSA-2017:3261
Issue date: 2017-11-27

Topic

An update for samba is now available for Red Hat Gluster Storage 3.3 forRed Hat Enterprise Linux 6 and Red Hat Gluster Storage 3.3 for Red HatEnterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat DoS samba memory issue

Relevant Releases Architectures

Red Hat Gluster 3.3 Samba on RHEL-6 - noarch, x86_64

Red Hat Gluster 3.3 Samba on RHEL-7 - noarch, x86_64

Bugs Fixed

1511899 - CVE-2017-14746 samba: Use-after-free in processing SMB1 requests

1512465 - CVE-2017-15275 samba: Server heap-memory disclosure

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