CVE-2007-4559 Patch

build/jenkins/install_dependencies.py

@@ -105,7 +105,26 @@ def untar(package, dst, silent=False):
     # with tarfile.TarFile(package, 'r') as zf:
     with tarfile.open(package, 'r') as zf:
         root_in_zip = zf.getnames()[0].split('/')[0]
-        zf.extractall()
+        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(zf)
         shutil.move(root_in_zip, dst)
     print('[done]')