https://bugzilla.mindrot.org/show_bug.cgi?id=3057
Bug ID: 3057 Summary: Fork-bomb when misconfiguring a host to ProxyJump onto itself Product: Portable OpenSSH Version: 7.9p1 Hardware: Other OS: Linux Status: NEW Severity: enhancement Priority: P5 Component: ssh Assignee: unassigned-b...@mindrot.org Reporter: and...@kacian.sk Following configuration causes ssh to spawn endless copies of itself when user tries to connect to the specified host. Host foo ProxyJump foo # or more generic Host * ProxyJump %h I have reproduced this on 7.9p1 on Suse Linux Enterprise Server 15 and on 7.4p1 on Debian Stretch (currently oldstable). Depending on limits configured on the server, this, like any other forkbomb, can cause all kinds of fun behavior on the local server. Perhaps the client could check for this edge case and avoid trying to make an impossible proxy connection. -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ openssh-bugs mailing list openssh-bugs@mindrot.org https://lists.mindrot.org/mailman/listinfo/openssh-bugs