A storebackup security update has been released for Debian GNU/Linux 8 LTS to address a possible privilege escalation.

Package : storebackup
Version : 3.2.1-1+deb8u1
CVE ID : CVE-2020-7040
Debian Bug : 949393

storeBackup.pl in storeBackup through 3.5 relies on the
/tmp/storeBackup.lock pathname, which allows symlink attacks
that possibly lead to privilege escalation.

Local users can also create a plain file named /tmp/storeBackup.lock
to block use of storeBackup until an admin manually deletes that file.

For Debian 8 "Jessie", this problem has been fixed in version
3.2.1-1+deb8u1.

We recommend that you upgrade your storebackup packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS