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Debian Security Advisory DSA-5597-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
January 04, 2024                      https://www.debian.org/security/faq
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Package        : exim4
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 the oldstable distribution (bullseye), this problem has been fixed
in version 4.94.2-7+deb11u2.

For the stable distribution (bookworm), this problem has been fixed in
version 4.96-15+deb12u4.

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

Debian: DSA-5597-1: exim4 security update

January 4, 2024
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 PIPEL...

Summary

For the oldstable distribution (bullseye), this problem has been fixed
in version 4.94.2-7+deb11u2.

For the stable distribution (bookworm), this problem has been fixed in
version 4.96-15+deb12u4.

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

Severity
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.

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