Release and vulnerability announcements for strongSwan

A potential authorization bypass vulnerability in the gmp plugin was discovered in strongSwan. All versions are affected in certain configurations.

We are happy to announce the release of strongSwan 5.7.0, which brings support for SWIMA for PA-TNC, swanctl.conf/strongswan.conf syntax changes, a Botan crypto library plugin, support for Postquantum Preshared Keys for IKEv2, fixes a potential authorization bypass vulnerability, and comes with several other new features and fixes.