This update for strongswan fixes the following issues:
- CVE-2017-9022: Insufficient Input Validation in gmp Plugin leads to Denial of service (bsc#1039514) - CVE-2017-9023: Incorrect x509 ASN.1 parser error handling could lead to Denial of service (bsc#1039515) - IKEv1 protocol is vulnerable to DoS amplification attack (bsc#985012)