Operating System:

[RedHat]

Published:

04 January 2019

Protect yourself against future threats.

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0049
                   Important: keepalived security update
                              4 January 2019

===========================================================================

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

Product:           keepalived
Publisher:         Red Hat
Operating System:  Red Hat Enterprise Linux WS/Desktop 7
                   Red Hat Enterprise Linux Server 7
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-19115  

Reference:         ESB-2018.3664.2

Original Bulletin: 
   https://access.redhat.com/errata/RHSA-2019:0022

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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: keepalived security update
Advisory ID:       RHSA-2019:0022-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2019:0022
Issue date:        2019-01-03
CVE Names:         CVE-2018-19115 
=====================================================================

1. Summary:

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

Red Hat Product Security has rated this update as having a security impact
of Important. 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 Server (v. 7) - ppc64le, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, ppc64le

3. Description:

The keepalived utility provides simple and robust facilities for load
balancing and high availability. The load balancing framework relies on the
well-known and widely used IP Virtual Server (IPVS) kernel module providing
layer-4 (transport layer) load balancing. Keepalived implements a set of
checkers to dynamically and adaptively maintain and manage a load balanced
server pool according to the health of the servers. Keepalived also
implements the Virtual Router Redundancy Protocol (VRRPv2) to achieve high
availability with director failover.

Security Fix(es):

* keepalived: Heap-based buffer overflow when parsing HTTP status codes
allows for denial of service or possibly arbitrary code execution
(CVE-2018-19115)

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.

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/):

1651871 - CVE-2018-19115 keepalived: Heap-based buffer overflow when parsing HTTP status codes allows for denial of service or possibly arbitrary code execution

6. Package List:

Red Hat Enterprise Linux Server (v. 7):

Source:
keepalived-1.3.5-8.el7_6.src.rpm

ppc64le:
keepalived-1.3.5-8.el7_6.ppc64le.rpm
keepalived-debuginfo-1.3.5-8.el7_6.ppc64le.rpm

x86_64:
keepalived-1.3.5-8.el7_6.x86_64.rpm
keepalived-debuginfo-1.3.5-8.el7_6.x86_64.rpm

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7):

Source:
keepalived-1.3.5-8.el7_6.src.rpm

aarch64:
keepalived-1.3.5-8.el7_6.aarch64.rpm
keepalived-debuginfo-1.3.5-8.el7_6.aarch64.rpm

ppc64le:
keepalived-1.3.5-8.el7_6.ppc64le.rpm
keepalived-debuginfo-1.3.5-8.el7_6.ppc64le.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
keepalived-1.3.5-8.el7_6.src.rpm

x86_64:
keepalived-1.3.5-8.el7_6.x86_64.rpm
keepalived-debuginfo-1.3.5-8.el7_6.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-2018-19115
https://access.redhat.com/security/updates/classification/#important

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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