Accepted postfix 3.5.24-0+deb11u1 (source) into oldstable-proposed-updates
- To: debian-changes@lists.debian.org
- Subject: Accepted postfix 3.5.24-0+deb11u1 (source) into oldstable-proposed-updates
- From: Debian FTP Masters <ftpmaster@ftp-master.debian.org>
- Date: Mon, 29 Jan 2024 21:48:07 +0000
- Debian: DAK
- Debian-architecture: source
- Debian-archive-action: accept
- Debian-changes: postfix_3.5.24-0+deb11u1_source.changes
- Debian-source: postfix
- Debian-suite: oldstable-proposed-updates
- Debian-version: 3.5.24-0+deb11u1
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Sat, 27 Jan 2024 10:21:04 -0500
Source: postfix
Architecture: source
Version: 3.5.24-0+deb11u1
Distribution: bullseye
Urgency: medium
Maintainer: LaMont Jones <lamont@debian.org>
Changed-By: Scott Kitterman <scott@kitterman.com>
Changes:
postfix (3.5.24-0+deb11u1) bullseye; urgency=medium
.
[Wietse Venema]
.
* 3.5.24
- Security (outbound SMTP smuggling): with the default setting
"cleanup_replace_stray_cr_lf = yes" Postfix will replace
stray <CR> or <LF> characters in message content with a
space character. This prevents Postfix from enabling
outbound (remote) SMTP smuggling, and it also makes evaluation
of Postfix-added DKIM etc. signatures independent from how
a remote mail server handles stray <CR> or <LF> characters.
Files: global/mail_params.h, cleanup/cleanup.c,
cleanup/cleanup_message.c, mantools/postlink, proto/postconf.proto.
- Security (inbound SMTP smuggling): with "smtpd_forbid_bare_newline
= normalize" (default "no" for Postfix < 3.9), the Postfix
SMTP server requires the standard End-of-DATA sequence
<CR><LF>.<CR><LF>, and otherwise allows command or message
content lines ending in the non-standard <LF>, processing
them as if the client sent the standard <CR><LF>.
The alternative setting, "smtpd_forbid_bare_newline = reject"
will reject any command or message that contains a bare
<LF>, and is more likely to cause problems with legitimate
clients.
For backwards compatibility, local clients are excluded by
default with "smtpd_forbid_bare_newline_exclusions =
$mynetworks".
Files: mantools/postlink, proto/postconf.proto,
global/mail_params.h, global/smtp_stream.c, global/smtp_stream.h,
smtpd/smtpd.c, smtpd/smtpd_check.[hc].
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