Security update for openssh-openssl1

SUSE Security Update: Security update for openssh-openssl1
Announcement ID: SUSE-SU-2018:2719-1
Rating: important
References: #1016370 #1017099 #1023275 #1053972 #1065000 #1069509 #1076957
Cross-References: CVE-2008-1483 CVE-2016-10012 CVE-2016-10708 CVE-2017-15906
Affected Products:
  • SUSE Linux Enterprise Server 11-SECURITY

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

Description:

This update for openssh-openssl1 fixes the following issues:
These security issues were fixed:

  • CVE-2016-10708: Prevent NULL pointer dereference via an out-of-sequence NEWKEYS message allowed remote attackers to cause a denial of service (bsc#1076957).
  • CVE-2017-15906: The process_open function did not properly prevent write operations in readonly mode, which allowed attackers to create zero-length files (bsc#1065000).
  • CVE-2016-10012: The shared memory manager (associated with pre-authentication compression) did not ensure that a bounds check is enforced by all compilers, which might have allowed local users to gain privileges by leveraging access to a sandboxed privilege-separation process, related to the m_zback and m_zlib data structures (bsc#1016370).
  • CVE-2008-1483: Prevent local users from hijacking forwarded X connections by causing ssh to set DISPLAY to :10, even when another process is listening on the associated port. This problem was reontroduced by another patch and was previously fixed by another update (bsc#1069509).

These non-security issues were fixed:
  • Remove duplicate KEX method (bsc#1053972)
  • New switch for printing diagnostic messages in sftp client's batch mode (bsc#1023275)
  • Enable case-insensitive hostname matching (bsc#1017099)

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 11-SECURITY:
    zypper in -t patch secsp3-openssh-openssl1-13777=1

Package List:

  • SUSE Linux Enterprise Server 11-SECURITY (i586 ia64 ppc64 s390x x86_64):
    • openssh-openssl1-6.6p1-19.3.1
    • openssh-openssl1-helpers-6.6p1-19.3.1

References: