Fix up exception catching with no exception specified.

volatility/plugins/windows/strings.py

@@ -40,7 +40,7 @@ class Strings(interfaces.plugins.PluginInterface):
                 offset, string = self._parse_line(line)
                 try:
                     revmap_list = [name + ":" + hex(offset) for (name, offset) in revmap[offset >> 12]]
-                except:
+                except (IndexError, KeyError):
                     revmap_list = ["FREE MEMORY"]
                 yield (0, (str(string, 'latin-1'), format_hints.Hex(offset), ", ".join(revmap_list)))
             except ValueError:

volatility/plugins/windows/userassist.py

@@ -311,7 +311,7 @@ class UserAssist(interfaces_plugins.PluginInterface):
                                                                                          self.config['primary'],
                                                                                          self.config['nt_symbols'],
                                                                                          filter = "ntuser.dat")]
-            except:
+            except ImportError:
                 vollog.warning("Unable to import windows.hivelist plugin, please provide a hive offset")
                 raise ValueError("Unable to import windows.hivelist plugin, please provide a hive offset")
         else: