CVE-2017-16667: Improper Neutralization of Special Elements used in an OS Command

backintime aka Back in Time before 1.1.24 did improper escaping/quoting of file paths used as arguments to the 'notify-send' command, leading to some parts of file paths being executed as shell commands within an os.system call in qt4/plugins/notifyplugin.py. This could allow an attacker to craft...