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Debian LTS Advisory DLA-3708-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/                      Markus Koschany
January 05, 2024                              https://wiki.debian.org/LTS
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Package        : exim4
Version        : 4.92-8+deb10u9
CVE ID         : CVE-2023-51766
Debian Bug     : 1059387

It was discovered that Exim, a mail transport agent, can be induced to accept a
second message embedded as part of the body of a first message in certain
configurations where PIPELINING or CHUNKING on incoming connections is offered.

For Debian 10 buster, this problem has been fixed in version
4.92-8+deb10u9.

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