ignore invalid env

modules/ssh/ssh.go

@@ -52,15 +52,16 @@ func handleServerConn(keyID string, chans <-chan ssh.NewChannel) {
 				switch req.Type {
 				case "env":
 					args := strings.Split(strings.Replace(payload, "\x00", "", -1), "\v")
-					if len(args) != 2 {
+					if len(args) == 2 {
-						return
-					}
 						args[0] = strings.TrimLeft(args[0], "\x04")
 						_, _, err := com.ExecCmdBytes("env", args[0]+"="+args[1])
 						if err != nil {
 							log.Error(3, "env: %v", err)
 							return
 						}
+					} else {
+						log.Info("Invalid env arguments: '%#v'", args)
+					}
 				case "exec":
 					cmdName := strings.TrimLeft(payload, "'()")
 					os.Setenv("SSH_ORIGINAL_COMMAND", cmdName)