diff --git a/run_docker.py b/run_docker.py
index d03d080..485b143 100644
--- a/run_docker.py
+++ b/run_docker.py
@@ -97,7 +97,26 @@ def untar(directory, tar_filename):
         tar_filename:  tar file path
     """
     with tarfile.open(tar_filename, "r") as tar_o:
-        tar_o.extractall(path=directory)
+        def is_within_directory(directory, target):
+            
+            abs_directory = os.path.abspath(directory)
+            abs_target = os.path.abspath(target)
+        
+            prefix = os.path.commonprefix([abs_directory, abs_target])
+            
+            return prefix == abs_directory
+        
+        def safe_extract(tar, path=".", members=None, *, numeric_owner=False):
+        
+            for member in tar.getmembers():
+                member_path = os.path.join(path, member.name)
+                if not is_within_directory(path, member_path):
+                    raise Exception("Attempted Path Traversal in Tar File")
+        
+            tar.extractall(path, members, numeric_owner=numeric_owner) 
+            
+        
+        safe_extract(tar_o, path=directory)
 
 
 def main(syn, args):