strongswan is vulnerable to denial of service. The vulnerability exists due to an integer overflow.
git://git.launchpad.net/ubuntu-cve-tracker/tree/active/CVE-2021-41990
cert-portal.siemens.com/productcert/pdf/ssa-539476.pdf
github.com/strongswan/strongswan/releases/tag/5.9.4
lists.fedoraproject.org/archives/list/[email protected]/message/5FJSATD2R2XHTG4P63GCMQ2N7EWKMME5/
lists.fedoraproject.org/archives/list/[email protected]/message/WQSQ3BEC22NF4NCDZVCT4P3Q2ZIAJXGJ/
lists.fedoraproject.org/archives/list/[email protected]/message/Y3TQ32JLJOBJDB2EJKSX2PBPB5NFG2D4/
www.debian.org/security/2021/dsa-4989
www.strongswan.org/blog/2021/10/18/strongswan-vulnerability-(cve-2021-41990).html