Add spip_plugin_version function to retrieve plugin version from conf…

…ig.txt or Composed-By header

lib/msf/core/exploit/remote/http/spip.rb

@@ -41,5 +41,71 @@ def spip_version
 
       return version ? Rex::Version.new(version) : nil
     end
+
+    # Determine Spip plugin version by name
+    #
+    # @param [String] plugin_name Name of the plugin to search for
+    # @return [Rex::Version, nil] Version of the plugin as Rex::Version, or nil if not found
+    def spip_plugin_version(plugin_name)
+      res = send_request_cgi(
+        'method' => 'GET',
+        'uri' => normalize_uri(target_uri.path, 'spip.php')
+      )
+
+      return unless res
+
+      # Check the Composed-By header for plugin version or config.txt URL
+      composed_by = res.headers['Composed-By']
+      return unless composed_by
+
+      # Case 1: Look for config.txt URL in the header
+      if composed_by =~ %r{(https?://[^\s]+/local/config\.txt)}i
+        config_url = ::Regexp.last_match(1)
+        vprint_status("Found config.txt URL: #{config_url}")
+
+        # Fetch and parse the config.txt file directly
+        config_res = send_request_cgi(
+          'method' => 'GET',
+          'uri' => config_url
+        )
+
+        if config_res&.code == 200
+          return parse_plugin_version(config_res.body, plugin_name)
+        end
+      end
+
+      # Case 2: Check for plugin version directly in Composed-By
+      composed_by.split(',').each do |entry|
+        if entry =~ /#{plugin_name}\((\d+(\.\d+)+)\)/
+          return Rex::Version.new(::Regexp.last_match(1))
+        end
+      end
+
+      # Case 3: Fallback to fetching /local/config.txt directly
+      vprint_status('No version found in Composed-By header. Attempting to fetch /local/config.txt directly.')
+      config_url = normalize_uri(target_uri.path, 'local', 'config.txt')
+      config_res = send_request_cgi(
+        'method' => 'GET',
+        'uri' => config_url
+      )
+
+      return parse_plugin_version(config_res.body, plugin_name) if config_res&.code == 200
+
+      nil
+    end
+
+    # Parse the plugin version from config.txt or composed-by
+    #
+    # @param [String] body The body content to parse
+    # @param [String] plugin_name Name of the plugin to find the version for
+    # @return [Rex::Version, nil] Version of the plugin as Rex::Version, or nil if not found
+    def parse_plugin_version(body, plugin_name)
+      body.each_line do |line|
+        if line =~ /#{plugin_name}\((\d+(\.\d+)+)\)/
+          return Rex::Version.new(::Regexp.last_match(1))
+        end
+      end
+      nil
+    end
   end
 end

modules/exploits/multi/http/spip_porte_plume_previsu_rce.rb

@@ -84,9 +84,18 @@ def check
     ]
 
     vulnerable_ranges.each do |range|
-      if rversion.between?(range[:start], range[:end])
+      next unless rversion.between?(range[:start], range[:end])
+
+      print_status('SPIP version is in the vulnerable range.')
+
+      plugin_version = spip_plugin_version('porte_plume')
+
+      unless plugin_version
+        print_warning('Could not determine the version of the porte_plume plugin.')
         return Exploit::CheckCode::Appears("The detected SPIP version (#{rversion}) is vulnerable.")
       end
+
+      return Exploit::CheckCode::Appears("The detected SPIP version (#{rversion}) and porte_plume version (#{plugin_version}) are vulnerable.") if plugin_version < Rex::Version.new('3.1.6')
     end
 
     return Exploit::CheckCode::Safe("The detected SPIP version (#{rversion}) is not vulnerable.")