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Red Hat Security Advisory 2019-1945-01

Red Hat Security Advisory 2019-1945-01
Posted Jul 30, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-1945-01 - 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 kernel module providing layer-4 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 to achieve high availability with director failover. Issues addressed include buffer overflow, code execution, and denial of service vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability, code execution, protocol
systems | linux, redhat
advisories | CVE-2018-19115
MD5 | 8eef904316a7f316112fcc3d61fbc96c

Red Hat Security Advisory 2019-1945-01

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

Synopsis: Important: keepalived security update
Advisory ID: RHSA-2019:1945-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:1945
Issue date: 2019-07-30
CVE Names: CVE-2018-19115
=====================================================================

1. Summary:

An update for keepalived is now available for Red Hat Enterprise Linux 7.4
Extended Update Support.

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 EUS (v. 7.4) - ppc64le, x86_64

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, acknowledgments, 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 EUS (v. 7.4):

Source:
keepalived-1.3.5-1.el7_4.1.src.rpm

ppc64le:
keepalived-1.3.5-1.el7_4.1.ppc64le.rpm
keepalived-debuginfo-1.3.5-1.el7_4.1.ppc64le.rpm

x86_64:
keepalived-1.3.5-1.el7_4.1.x86_64.rpm
keepalived-debuginfo-1.3.5-1.el7_4.1.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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