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Over 660k Rsync servers exposed to code execution attacks
- nimar 2y agowas surprised seeing this not discussed previously, as it can have rather big ramifications also for home server holsters etc (if not behind VPN)
- martinbaun 2y agoThere's something I am missing here. I sync my servers with rsync, but it is over ssh - is this still vulnerable?
- aesh2Xa1 2y agoIf you explicitly use "-e ssh" and don't run a daemon, then these probably don't affect you. If you don't specify that protocol, though, you have three scenarios: 1. only the local host has the rsync binary 2. both local and remote hosts have the binary, but neither runs them as a daemon 3. both have the binary and the remote runs as the daemon In #1 you end up using SSH anyway (unless there's also no SSH binary). In #2, a malicious server binary could attack you. In #3, a malicious server binary could attack you. Also, many of rsync's features rely upon both sides having the binary.
- martinbaun 2y agoWow, thank you - this is exactly what I didn't get. You explained it super well. I am number 2, and so I guess it wont affect me as long as the fingerprint doesn't change to a malicious server that have taken over an IP.
- nubinetwork 2y agoRelated: https://news.ycombinator.com/item?id=42706732 https://news.ycombinator.com/item?id=42706732