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Red Hat Enterprise Linux 8: RHSA-2020-2070-01 Important: DoS Attack Fix

red hat
Calendar Grey May 12, 2020
Dist Redhat Esm H88
The security advisory for libreswan on Red Hat Enterprise Linux 8 has highlighted significant vulnerabilities that have been rectified to ensure secure functionality.
An update for libreswan is now available for Red Hat Enterprise Linux 8

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

Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN).
Security Fix(es):
* libreswan: DoS attack via malicious IKEv1 informational exchange message (CVE-2020-1763)
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 DoS attack Red Hat Enterprise Linux important update libreswan

References

https://access.redhat.com/security/cve/CVE-2020-1763 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: libreswan-3.29-7.el8_2.src.rpm
aarch64: libreswan-3.29-7.el8_2.aarch64.rpm libreswan-debuginfo-3.29-7.el8_2.aarch64.rpm libreswan-debugsource-3.29-7.el8_2.aarch64.rpm
ppc64le: libreswan-3.29-7.el8_2.ppc64le.rpm libreswan-debuginfo-3.29-7.el8_2.ppc64le.rpm libreswan-debugsource-3.29-7.el8_2.ppc64le.rpm
s390x: libreswan-3.29-7.el8_2.s390x.rpm libreswan-debuginfo-3.29-7.el8_2.s390x.rpm libreswan-debugsource-3.29-7.el8_2.s390x.rpm
x86_64: libreswan-3.29-7.el8_2.x86_64.rpm libreswan-debuginfo-3.29-7.el8_2.x86_64.rpm libreswan-debugsource-3.29-7.el8_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-2020:2070-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:2070
Issue date: 2020-05-12

Topic

An update for libreswan is now available for Red Hat Enterprise Linux 8.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 DoS attack Red Hat Enterprise Linux important update libreswan

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

1814541 - CVE-2020-1763 libreswan: DoS attack via malicious IKEv1 informational exchange message

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