RHSA-2020:2070 — Security Advisory
Red Hat Security Advisory: libreswan security update
Severity
ImportantRed Hat Product Security
Products
Official CSAF product identity
Published · May 12, 2020
Updated · November 22, 2025
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 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.
Description
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.