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Red Hat 7.5: RHSA-2019:1792-01 Important Keepalived Denial Of Service

red hat
Calendar Grey July 16, 2019
Dist Redhat Esm H88
Ubuntu Linux provides a vital patch for HAProxy, rectifying a severe memory corruption vulnerability.
An update for keepalived is now available for Red Hat Enterprise Linux 7.5 Extended Update Support

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: 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.

Topics%20covered

Topics Covered

security advisory denial of service security update Red Hat buffer overflow Important impact keepalived

References

https://access.redhat.com/security/cve/CVE-2018-19115 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Server EUS (v. 7.5):
Source: keepalived-1.3.5-7.el7_5.2.src.rpm
ppc64: keepalived-1.3.5-7.el7_5.2.ppc64.rpm keepalived-debuginfo-1.3.5-7.el7_5.2.ppc64.rpm
ppc64le: keepalived-1.3.5-7.el7_5.2.ppc64le.rpm keepalived-debuginfo-1.3.5-7.el7_5.2.ppc64le.rpm
s390x: keepalived-1.3.5-7.el7_5.2.s390x.rpm keepalived-debuginfo-1.3.5-7.el7_5.2.s390x.rpm
x86_64: keepalived-1.3.5-7.el7_5.2.x86_64.rpm keepalived-debuginfo-1.3.5-7.el7_5.2.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


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:1792-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:1792
Issue date: 2019-07-16

Topic

An update for keepalived is now available for Red Hat Enterprise Linux 7.5Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory denial of service security update Red Hat buffer overflow Important impact keepalived

Relevant Releases Architectures

Red Hat Enterprise Linux Server EUS (v. 7.5) - ppc64, ppc64le, s390x, x86_64

Bugs Fixed

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

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