It was found that beep, an advanced PC-speaker beeper, contains an External
Control of File Name or Path vulnerability in the
--device option that can allow a
local unprivileged user to inhibit execution of arbitrary programs by other
users, allowing DoS.
For Debian 9 stretch, these problems have been fixed in version 1.3-4+deb9u2.
We recommend that you upgrade your beep packages.
Further information about Extended LTS security advisories can be found in the dedicated section of our website.