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SUSE-SU-2023:4981-1

Опубликовано: 28 дек. 2023
Источник: suse-cvrf

Описание

Security update for postfix

This update for postfix fixes the following issues:

  • CVE-2023-51764: Fixed new SMTP smuggling attack (bsc#1218304).

Список пакетов

SUSE Linux Enterprise Module for Basesystem 15 SP5
postfix-3.7.3-150500.3.11.1
postfix-devel-3.7.3-150500.3.11.1
postfix-doc-3.7.3-150500.3.11.1
postfix-ldap-3.7.3-150500.3.11.1
SUSE Linux Enterprise Module for Legacy 15 SP5
postfix-bdb-3.7.3-150500.3.11.1
postfix-bdb-lmdb-3.7.3-150500.3.11.1
SUSE Linux Enterprise Module for Server Applications 15 SP5
postfix-mysql-3.7.3-150500.3.11.1
openSUSE Leap 15.5
postfix-3.7.3-150500.3.11.1
postfix-bdb-3.7.3-150500.3.11.1
postfix-bdb-lmdb-3.7.3-150500.3.11.1
postfix-devel-3.7.3-150500.3.11.1
postfix-doc-3.7.3-150500.3.11.1
postfix-ldap-3.7.3-150500.3.11.1
postfix-mysql-3.7.3-150500.3.11.1
postfix-postgresql-3.7.3-150500.3.11.1

Ссылки

Описание

Postfix through 3.8.5 allows SMTP smuggling unless configured with smtpd_data_restrictions=reject_unauth_pipelining and smtpd_discard_ehlo_keywords=chunking (or certain other options that exist in recent versions). Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because Postfix supports <LF>.<CR><LF> but some other popular e-mail servers do not. To prevent attack variants (by always disallowing <LF> without <CR>), a different solution is required, such as the smtpd_forbid_bare_newline=yes option with a Postfix minimum version of 3.5.23, 3.6.13, 3.7.9, 3.8.4, or 3.9.

Затронутые продукты
SUSE Linux Enterprise Module for Basesystem 15 SP5:postfix-3.7.3-150500.3.11.1
SUSE Linux Enterprise Module for Basesystem 15 SP5:postfix-devel-3.7.3-150500.3.11.1
SUSE Linux Enterprise Module for Basesystem 15 SP5:postfix-doc-3.7.3-150500.3.11.1
SUSE Linux Enterprise Module for Basesystem 15 SP5:postfix-ldap-3.7.3-150500.3.11.1
Ссылки