Merge pull request #67 from Wenzel/fix_set_intersection

Fix set intersection

Author: Wenzel

checksec/elf.py

@@ -167,14 +167,14 @@ def __get_libc(self) -> Libc:
     def fortified(self) -> FrozenSet[str]:
         """Get the list of fortified symbols"""
         libc = self.__get_libc
-        return self.set_dyn_syms ^ libc.fortified_symbols
+        return self.set_dyn_syms & libc.fortified_symbols
 
     @property
     @lru_cache()
     def fortifiable(self) -> FrozenSet[str]:
         """Get the list of fortifiable symbols (fortified + unfortified)"""
         libc = self.__get_libc
-        return self.set_dyn_syms ^ (self.fortified | libc.fortified_symbols_base)
+        return self.set_dyn_syms & (self.fortified | libc.fortified_symbols_base)
 
     @property
     def checksec_state(self) -> ELFChecksecData:
@@ -188,7 +188,7 @@ def checksec_state(self) -> ELFChecksecData:
                 # all fortified !
                 score = 100
             else:
-                score = (fortified_count * 100) / (fortified_count + fortifiable_count)
+                score = (fortified_count * 100) / fortifiable_count
                 score = round(score)
 
         fortify_source = True if fortified_count != 0 else False

setup.py

@@ -8,7 +8,7 @@
 
 setuptools.setup(
     name="checksec.py",
-    version="0.4.0",
+    version="0.4.1",
     author="Mathieu Tarral",
     author_email="[email protected]",
     description="Checksec tool implemented in Python",