CVE-2021-21404 06.04.21 22:15 Syncthing is a continuous file synchronization program. In Syncthing before version 1.15.0, the relay server `strelaysrv` can be caused to crash and exit by sending a relay message with a negative length field. Similarly, Syncthing itself can crash for the same reason if given a malformed message from a malicious relay server when attempting to join the relay. Relay joins are essentially random (from a subset of low latency relays) and Syncthing will by default restart when crashing, at which point it's likely to pick another non-malicious relay. This flaw is fixed in version 1.15.0. We still ship 1.5.0, we crucially need to update that *very* useful networked daemon package. With the new go importer maybe that's easier. Also work in the go build system needs to happen IIRC. Previous discussion about updating syncthing: https://issues.guix.gnu.org/45476 Léo