Debian: DSA-4456-1: exim4 security update
Summary
For the stable distribution (stretch), this problem has been fixed in
version 4.89-2+deb9u4.
We recommend that you upgrade your exim4 packages.
For the detailed security status of exim4 please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/source-package/exim4
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org