ESB-2019.0294 - [Linux][RedHat] etcd: Unauthorised access - Existing account 2019-02-01

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0294
         Moderate: etcd security, bug fix, and enhancement update
                              1 February 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           etcd
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux Server 7
                   Red Hat Enterprise Linux WS/Desktop 7
                   Linux variants
Impact/Access:     Unauthorised Access -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-16886  

Original Bulletin: 
   https://access.redhat.com/errata/RHSA-2019:0237

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Red Hat. It is recommended that administrators
         running etcd check for an updated version of the software for their
         operating system.

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                   Red Hat Security Advisory

Synopsis:          Moderate: etcd security, bug fix, and enhancement update
Advisory ID:       RHSA-2019:0237-01
Product:           Red Hat Enterprise Linux Extras
Advisory URL:      https://access.redhat.com/errata/RHSA-2019:0237
Issue date:        2019-01-31
CVE Names:         CVE-2018-16886 
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1. Summary:

An update for etcd is now available for Red Hat Enterprise Linux 7 Extras.

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 7 Extras - aarch64, ppc64le, s390x, x86_64

3. Description:

The etcd packages provide a highly available key-value store for shared
configuration.

The following packages have been upgraded to a later upstream version: etcd
(3.3.11). (BZ#1664290)

Security Fix(es):

* etcd: Improper Authentication in auth/store.go:AuthInfoFromTLS() via
gRPC-gateway (CVE-2018-16886)

For more details about the security issue(s), including the impact, a CVSS
score, and other related information, refer to the CVE page(s) listed in
the References section.

Red Hat would like to thank Matt Wheeler (Osirium) for reporting this
issue.

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

5. Bugs fixed (https://bugzilla.redhat.com/):

1651034 - CVE-2018-16886 etcd: Improper Authentication in auth/store.go:AuthInfoFromTLS() via gRPC-gateway
1664290 - Update etcd to the latest relevant upstream for AH 7.6.2

6. Package List:

Red Hat Enterprise Linux 7 Extras:

Source:
etcd-3.3.11-2.el7.src.rpm

aarch64:
etcd-3.3.11-2.el7.aarch64.rpm
etcd-debuginfo-3.3.11-2.el7.aarch64.rpm

ppc64le:
etcd-3.3.11-2.el7.ppc64le.rpm
etcd-debuginfo-3.3.11-2.el7.ppc64le.rpm

s390x:
etcd-3.3.11-2.el7.s390x.rpm
etcd-debuginfo-3.3.11-2.el7.s390x.rpm

x86_64:
etcd-3.3.11-2.el7.x86_64.rpm
etcd-debuginfo-3.3.11-2.el7.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-2018-16886
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/

Copyright 2019 Red Hat, Inc.

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