From: Simon Tatham <anakin@pobox.com>
Date: Mon, 4 Jun 2012 23:32:36 +0000 (+0000)
Subject: Add missing check for failure to agree a host key algorithm.
X-Git-Tag: 0.63~195
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=a46aac386b20e6474d45f701a96d7afc8cfdafec;p=PuTTY.git

Add missing check for failure to agree a host key algorithm.

[originally from svn r9557]
---

diff --git a/ssh.c b/ssh.c
index 750017f6..ef503bf5 100644
--- a/ssh.c
+++ b/ssh.c
@@ -5778,6 +5778,12 @@ static int do_ssh2_transport(Ssh ssh, void *vin, int inlen,
 		break;
 	    }
 	}
+	if (!ssh->hostkey) {
+	    bombout(("Couldn't agree a host key algorithm (available: %s)",
+		     str ? str : "(null)"));
+	    crStop(0);
+	}
+
 	s->guessok = s->guessok &&
 	    first_in_commasep_string(hostkey_algs[0]->name, str, len);
 	ssh_pkt_getstring(pktin, &str, &len);    /* client->server cipher */