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AUSCERT External Security Bulletin Redistribution
ESB-2019.2952
keepalived security and bug fix update
7 August 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
Linux variants
Impact/Access: Overwrite Arbitrary Files -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2018-19044
Original Bulletin:
https://access.redhat.com/errata/RHSA-2019:2285
Comment: This advisory references vulnerabilities in products which run on
platforms other than Red Hat. It is recommended that administrators
running keepalived check for an updated version of the software for
their operating system.
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Red Hat Security Advisory
Synopsis: Moderate: keepalived security and bug fix update
Advisory ID: RHSA-2019:2285-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:2285
Issue date: 2019-08-06
CVE Names: CVE-2018-19044
=====================================================================
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 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 Server (v. 7) - ppc64le, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - 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: Improper pathname validation allows for overwrite of
arbitrary filenames via symlinks (CVE-2018-19044)
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.
Additional Changes:
For detailed information on changes in this release, see the Red Hat
Enterprise Linux 7.7 Release Notes linked from 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/):
1651863 - CVE-2018-19044 keepalived: Improper pathname validation allows for overwrite of arbitrary filenames via symlinks
1667292 - vrrp_script broken from v1.3.0 with syntax "</dev/tcp/127.0.0.1/22"
6. Package List:
Red Hat Enterprise Linux Server (v. 7):
Source:
keepalived-1.3.5-16.el7.src.rpm
ppc64le:
keepalived-1.3.5-16.el7.ppc64le.rpm
keepalived-debuginfo-1.3.5-16.el7.ppc64le.rpm
x86_64:
keepalived-1.3.5-16.el7.x86_64.rpm
keepalived-debuginfo-1.3.5-16.el7.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source:
keepalived-1.3.5-16.el7.src.rpm
x86_64:
keepalived-1.3.5-16.el7.x86_64.rpm
keepalived-debuginfo-1.3.5-16.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-2018-19044
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.7_release_notes/index
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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