- -------------------------------------------------------------------------
Debian LTS Advisory DLA-3829-2                debian-lts@lists.debian.org
https://www.debian.org/lts/security/                   Bastien Roucariès
June 20, 2024                                 https://wiki.debian.org/LTS
- -------------------------------------------------------------------------

Package        : sendmail
Version        : 8.15.2-14~deb10u3

Fixing CVE-2023-51765 (smtp smuggling) requires to reject
email that include NUL bytes, in some configuration.

Previous security version of sendmail, by default, does not
reject email that include NUL bytes.

For Debian 10 buster, this problem has been fixed in version
8.15.2-14~deb10u3.

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/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

Mitigate sendmail CVE-2023-51765 Vulnerabilities in Debian LTS

June 20, 2024
Fixing CVE-2023-51765 (smtp smuggling) requires to reject email that include NUL bytes, in some configuration

Summary

Previous security version of sendmail, by default, does not
reject email that include NUL bytes.

For Debian 10 buster, this problem has been fixed in version
8.15.2-14~deb10u3.

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/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


Severity
Package : sendmail
Version : 8.15.2-14~deb10u3

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