# Security update for postfix

Announcement ID: SUSE-SU-2023:4981-1  
Rating: important  
References:

  * bsc#1218304
  * bsc#1218314

  
Cross-References:

  * CVE-2023-51764

  
CVSS scores:

  * CVE-2023-51764 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

  
Affected Products:

  * Basesystem Module 15-SP5
  * Legacy Module 15-SP5
  * openSUSE Leap 15.5
  * Server Applications Module 15-SP5
  * SUSE Linux Enterprise Desktop 15 SP5
  * SUSE Linux Enterprise High Performance Computing 15 SP5
  * SUSE Linux Enterprise Real Time 15 SP5
  * SUSE Linux Enterprise Server 15 SP5
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5

  
  
An update that solves one vulnerability and has one security fix can now be
installed.

## Description:

This update for postfix fixes the following issues:

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

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * openSUSE Leap 15.5  
    zypper in -t patch SUSE-2023-4981=1 openSUSE-SLE-15.5-2023-4981=1

  * Basesystem Module 15-SP5  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP5-2023-4981=1

  * Legacy Module 15-SP5  
    zypper in -t patch SUSE-SLE-Module-Legacy-15-SP5-2023-4981=1

  * Server Applications Module 15-SP5  
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP5-2023-4981=1

## Package List:

  * openSUSE Leap 15.5 (aarch64 ppc64le s390x x86_64 i586)
    * postfix-bdb-debugsource-3.7.3-150500.3.11.1
    * postfix-debugsource-3.7.3-150500.3.11.1
    * postfix-3.7.3-150500.3.11.1
    * postfix-debuginfo-3.7.3-150500.3.11.1
    * postfix-ldap-debuginfo-3.7.3-150500.3.11.1
    * postfix-postgresql-3.7.3-150500.3.11.1
    * postfix-bdb-debuginfo-3.7.3-150500.3.11.1
    * postfix-ldap-3.7.3-150500.3.11.1
    * postfix-postgresql-debuginfo-3.7.3-150500.3.11.1
    * postfix-bdb-lmdb-debuginfo-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-mysql-3.7.3-150500.3.11.1
    * postfix-mysql-debuginfo-3.7.3-150500.3.11.1
  * openSUSE Leap 15.5 (noarch)
    * postfix-doc-3.7.3-150500.3.11.1
  * Basesystem Module 15-SP5 (aarch64 ppc64le s390x x86_64)
    * postfix-debugsource-3.7.3-150500.3.11.1
    * postfix-3.7.3-150500.3.11.1
    * postfix-debuginfo-3.7.3-150500.3.11.1
    * postfix-ldap-debuginfo-3.7.3-150500.3.11.1
    * postfix-ldap-3.7.3-150500.3.11.1
    * postfix-devel-3.7.3-150500.3.11.1
  * Basesystem Module 15-SP5 (noarch)
    * postfix-doc-3.7.3-150500.3.11.1
  * Legacy Module 15-SP5 (aarch64 ppc64le s390x x86_64)
    * postfix-bdb-debugsource-3.7.3-150500.3.11.1
    * postfix-bdb-debuginfo-3.7.3-150500.3.11.1
    * postfix-bdb-lmdb-debuginfo-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
  * Server Applications Module 15-SP5 (aarch64 ppc64le s390x x86_64)
    * postfix-debuginfo-3.7.3-150500.3.11.1
    * postfix-debugsource-3.7.3-150500.3.11.1
    * postfix-mysql-3.7.3-150500.3.11.1
    * postfix-mysql-debuginfo-3.7.3-150500.3.11.1

## References:

  * https://www.suse.com/security/cve/CVE-2023-51764.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1218304
  * https://bugzilla.suse.com/show_bug.cgi?id=1218314