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34 lines
981 B
34 lines
981 B
9 months ago
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From de1f3564cd85915b3002859873a37cb8d31ac9ce Mon Sep 17 00:00:00 2001
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From: "dtucker@openbsd.org" <dtucker@openbsd.org>
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Date: Tue, 18 Feb 2020 08:49:49 +0000
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Subject: [PATCH] upstream: Detect and prevent simple configuration loops when
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using
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ProxyJump. bz#3057, ok djm@
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OpenBSD-Commit-ID: 077d21c564c886c98309d871ed6f8ef267b9f037
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---
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ssh.c | 10 +++++++++-
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1 file changed, 9 insertions(+), 1 deletion(-)
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diff --git a/ssh.c b/ssh.c
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index 15aee569e..a983a108b 100644
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--- a/ssh.c
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+++ b/ssh.c
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@@ -1208,6 +1208,14 @@ main(int ac, char **av)
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if (options.jump_host != NULL) {
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char port_s[8];
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const char *sshbin = argv0;
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+ int port = options.port, jumpport = options.jump_port;
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+
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+ if (port <= 0)
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+ port = default_ssh_port();
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+ if (jumpport <= 0)
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+ jumpport = default_ssh_port();
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+ if (strcmp(options.jump_host, host) == 0 && port == jumpport)
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+ fatal("jumphost loop via %s", options.jump_host);
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/*
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* Try to use SSH indicated by argv[0], but fall back to
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