This file is indexed.

/usr/lib/thunderbird/ is in lightning 1:52.8.0-1~deb8u1.

This file is owned by root:root, with mode 0o755.

File Mime Type Owner Mode Size
..
/usr/lib/thunderbird/extensions/ root:root 0o755
/usr/lib/thunderbird/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103} root:root 0o777