Recommended update for openssh

SUSE Recommended Update: Recommended update for openssh
Announcement ID: SUSE-RU-2019:0819-1
Rating: moderate
References: #1119183 #1127180
Affected Products:
  • SUSE Linux Enterprise Module for Server Applications 15
  • SUSE Linux Enterprise Module for Open Buildservice Development Tools 15
  • SUSE Linux Enterprise Module for Desktop Applications 15
  • SUSE Linux Enterprise Module for Basesystem 15

An update that has two recommended fixes can now be installed.

Description:

This update for openssh fixes the following issues:
Issues addressed:

  • Removed the "KexDHMin" config keyword (bsc#1127180) It used to allow lowering of the minimal allowed DH group size, which was increased to 2048 by upstream in the light of the Logjam attack. However, the code was broken since the upgrade to 7.6p1. It's still possible to use the fixed 1024-bit diffie-hellman-group1-sha1 key exchange method when working with legacy systems.
  • Fixed two race conditions in sshd relating to SIGHUP (bsc#1119183)

Patch Instructions:

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

  • SUSE Linux Enterprise Module for Server Applications 15:
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-2019-819=1
  • SUSE Linux Enterprise Module for Open Buildservice Development Tools 15:
    zypper in -t patch SUSE-SLE-Module-Development-Tools-OBS-15-2019-819=1
  • SUSE Linux Enterprise Module for Desktop Applications 15:
    zypper in -t patch SUSE-SLE-Module-Desktop-Applications-15-2019-819=1
  • SUSE Linux Enterprise Module for Basesystem 15:
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-2019-819=1

Package List:

  • SUSE Linux Enterprise Module for Server Applications 15 (aarch64 ppc64le s390x x86_64):
    • openssh-debuginfo-7.6p1-9.26.4
    • openssh-debugsource-7.6p1-9.26.4
    • openssh-fips-7.6p1-9.26.4
  • SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 (aarch64 ppc64le s390x x86_64):
    • openssh-cavs-7.6p1-9.26.4
    • openssh-cavs-debuginfo-7.6p1-9.26.4
    • openssh-debuginfo-7.6p1-9.26.4
    • openssh-debugsource-7.6p1-9.26.4
  • SUSE Linux Enterprise Module for Desktop Applications 15 (aarch64 ppc64le s390x x86_64):
    • openssh-askpass-gnome-7.6p1-9.26.4
    • openssh-askpass-gnome-debuginfo-7.6p1-9.26.4
  • SUSE Linux Enterprise Module for Basesystem 15 (aarch64 ppc64le s390x x86_64):
    • openssh-7.6p1-9.26.4
    • openssh-debuginfo-7.6p1-9.26.4
    • openssh-debugsource-7.6p1-9.26.4
    • openssh-helpers-7.6p1-9.26.4
    • openssh-helpers-debuginfo-7.6p1-9.26.4

References: