Add safe navigation to shell read response

sjanusz-r7 · Nov 5, 2024 · c7875b7 · c7875b7
1 parent 145ab02
commit c7875b7
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/msf/core/session/provider/single_command_shell.rb b/lib/msf/core/session/provider/single_command_shell.rb
@@ -119,7 +119,7 @@ def set_is_echo_shell(timeout, command_separator)
     cmd = "echo #{numeric_token}"
     shell_write(cmd + "#{command_separator}echo #{token}#{command_termination}")
     res = shell_read_until_token(token, 0, timeout)
-    @is_echo_shell = res.include?(cmd)
+    @is_echo_shell = res&.include?(cmd)
   end
 
   def shell_command_token_win32(cmd, timeout=10)