Security update for openssh

SUSE Security Update: Security update for openssh
Announcement ID: SUSE-SU-2018:2685-1
Rating: moderate
References: #1016370 #1017099 #1023275 #1048367 #1053972 #1065000 #1069509 #1076957 #1092582
Cross-References: CVE-2008-1483 CVE-2016-10012 CVE-2016-10708 CVE-2017-15906
Affected Products:
  • SUSE Linux Enterprise Server for SAP 12-SP1
  • SUSE Linux Enterprise Server 12-SP1-LTSS
  • SUSE Linux Enterprise Server 12-LTSS

An update that solves four vulnerabilities and has 5 fixes is now available.

Description:

This update for openssh provides the following fixes:
Security issues fixed:

  • CVE-2017-15906: Stricter checking of operations in read-only mode in sftp server (bsc#1065000).
  • CVE-2016-10012: Remove pre-auth compression support from the server to prevent possible cryptographic attacks (bsc#1016370).
  • CVE-2008-1483: Refine handling of sockets for X11 forwarding to remove reintroduced CVE-2008-1483 (bsc#1069509).
  • CVE-2016-10708: Prevent DoS due to crashes caused by out-of-sequence NEWKEYS message (bsc#1076957).

Bug fixes:
  • bsc#1017099: Enable case-insensitive hostname matching.
  • bsc#1023275: Add a new switch for printing diagnostic messages in sftp client's batch mode.
  • bsc#1048367: systemd integration to work around various race conditions.
  • bsc#1053972: Remove duplicate KEX method.
  • bsc#1092582: Add missing piece of systemd integration.
  • Remove the limit on the amount of tasks sshd can run.

Patch Instructions:

To install this SUSE Security 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 Server for SAP 12-SP1:
    zypper in -t patch SUSE-SLE-SAP-12-SP1-2018-1876=1
  • SUSE Linux Enterprise Server 12-SP1-LTSS:
    zypper in -t patch SUSE-SLE-SERVER-12-SP1-2018-1876=1
  • SUSE Linux Enterprise Server 12-LTSS:
    zypper in -t patch SUSE-SLE-SERVER-12-2018-1876=1

Package List:

  • SUSE Linux Enterprise Server for SAP 12-SP1 (ppc64le x86_64):
    • openssh-6.6p1-54.15.2
    • openssh-askpass-gnome-6.6p1-54.15.1
    • openssh-askpass-gnome-debuginfo-6.6p1-54.15.1
    • openssh-debuginfo-6.6p1-54.15.2
    • openssh-debugsource-6.6p1-54.15.2
    • openssh-fips-6.6p1-54.15.2
    • openssh-helpers-6.6p1-54.15.2
    • openssh-helpers-debuginfo-6.6p1-54.15.2
  • SUSE Linux Enterprise Server 12-SP1-LTSS (ppc64le s390x x86_64):
    • openssh-6.6p1-54.15.2
    • openssh-askpass-gnome-6.6p1-54.15.1
    • openssh-askpass-gnome-debuginfo-6.6p1-54.15.1
    • openssh-debuginfo-6.6p1-54.15.2
    • openssh-debugsource-6.6p1-54.15.2
    • openssh-fips-6.6p1-54.15.2
    • openssh-helpers-6.6p1-54.15.2
    • openssh-helpers-debuginfo-6.6p1-54.15.2
  • SUSE Linux Enterprise Server 12-LTSS (ppc64le s390x x86_64):
    • openssh-6.6p1-54.15.2
    • openssh-askpass-gnome-6.6p1-54.15.1
    • openssh-askpass-gnome-debuginfo-6.6p1-54.15.1
    • openssh-debuginfo-6.6p1-54.15.2
    • openssh-debugsource-6.6p1-54.15.2
    • openssh-fips-6.6p1-54.15.2
    • openssh-helpers-6.6p1-54.15.2
    • openssh-helpers-debuginfo-6.6p1-54.15.2

References: