Recommended update for openssh

Announcement ID: SUSE-RU-2019:0819-1
Rating: moderate
References:
Affected Products:
  • Basesystem Module 15
  • Desktop Applications Module 15
  • Server Applications Module 15
  • SUSE Linux Enterprise Desktop 15
  • SUSE Linux Enterprise High Performance Computing 15
  • SUSE Linux Enterprise Server 15
  • SUSE Linux Enterprise Server for SAP Applications 15

An update that has two 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 update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • Basesystem Module 15
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-2019-819=1
  • Desktop Applications Module 15
    zypper in -t patch SUSE-SLE-Module-Desktop-Applications-15-2019-819=1
  • Server Applications Module 15
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-2019-819=1

Package List:

  • Basesystem Module 15 (aarch64 ppc64le s390x x86_64)
    • openssh-debuginfo-7.6p1-9.26.4
    • openssh-debugsource-7.6p1-9.26.4
    • openssh-helpers-7.6p1-9.26.4
    • openssh-7.6p1-9.26.4
    • openssh-helpers-debuginfo-7.6p1-9.26.4
  • Desktop Applications Module 15 (aarch64 ppc64le s390x x86_64)
    • openssh-askpass-gnome-debuginfo-7.6p1-9.26.4
    • openssh-askpass-gnome-7.6p1-9.26.4
  • Server Applications Module 15 (aarch64 ppc64le s390x x86_64)
    • openssh-fips-7.6p1-9.26.4
    • openssh-debuginfo-7.6p1-9.26.4
    • openssh-debugsource-7.6p1-9.26.4

References: