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AUSCERT External Security Bulletin Redistribution
ESB-2019.2860
Important: keepalived security update
31 July 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: keepalived
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 7
Red Hat Enterprise Linux WS/Desktop 7
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2018-19115
Reference: ESB-2019.2639
ESB-2019.1916
ESB-2019.0049
ESB-2018.3664.2
Original Bulletin:
https://access.redhat.com/errata/RHSA-2019:1945
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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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