Debian 10 Buster DLA-3829-1 Critical: Sendmail SMTP Injection Risk

This particular injection vulnerability has been closed,
unfortunatly full closure need to reject mail that
contain NUL (0x00 byte).

This is slighly non conformant with RFC and could
be opt-out by setting confREJECT_NUL to 'false'
in sendmail.mc file.

For Debian 10 buster, this problem has been fixed in version
8.15.2-14~deb10u2.

We recommend that you upgrade your sendmail packages.

For the detailed security status of sendmail please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/sendmail

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