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Red Hat: RHSA-2019-2285-01 Moderate: Keepalived Symlink Issue

red hat
Calendar Grey August 6, 2019
Dist Redhat Esm H88
Cautionary notice regarding keepalived on RHEL, focusing on security patches and enhancements for stability.
An update for keepalived is now available for Red Hat Enterprise Linux 7

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

Summary

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.

Topics%20covered

Topics Covered

security advisory moderate Red Hat bug fix symlink issue keepalived

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

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/


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

Topic

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 impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate Red Hat bug fix symlink issue keepalived

Relevant Releases Architectures

Red Hat Enterprise Linux Server (v. 7) - ppc64le, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Bugs Fixed

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 "

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