SUSE-SU-2017:0264-1: moderate: Security update for openssh

[sle-security-updates at lists.suse.com]

   SUSE Security Update: Security update for openssh
______________________________________________________________________________

Announcement ID:    SUSE-SU-2017:0264-1
Rating:             moderate
References:         #1005480 #1005893 #1006221 #1016366 #1016368 
                    #1016369 #1016370 
Cross-References:   CVE-2016-10009 CVE-2016-10010 CVE-2016-10011
                    CVE-2016-10012 CVE-2016-8858
Affected Products:
                    SUSE Linux Enterprise Server for Raspberry Pi 12-SP2
                    SUSE Linux Enterprise Server 12-SP2
                    SUSE Linux Enterprise Desktop 12-SP2
______________________________________________________________________________

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

Description:


   This update for openssh fixes several issues.

   These security issues were fixed:

   - CVE-2016-8858: The kex_input_kexinit function in kex.c allowed remote
     attackers to cause a denial of service (memory consumption) by sending
     many duplicate KEXINIT requests (bsc#1005480).
   - 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 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-2016-10009: Untrusted search path vulnerability in ssh-agent.c
     allowed remote attackers to execute arbitrary local PKCS#11 modules by
     leveraging control over a forwarded agent-socket (bsc#1016366).
   - CVE-2016-10010: When forwarding unix domain sockets with privilege
     separation disabled, the resulting sockets have be created as 'root'
     instead of the authenticated user. Forwarding unix domain sockets
     without privilege separation enabled is now rejected.
   - CVE-2016-10011: authfile.c in sshd did not properly consider the effects
     of realloc on buffer contents, which might allowed local users to obtain
     sensitive private-key information by leveraging access to a
     privilege-separated child process (bsc#1016369).

   These non-security issues were fixed:

   - Adjusted suggested command for removing conflicting server keys from the
     known_hosts file (bsc#1006221)
   - Properly verify CIDR masks in configuration (bsc#1005893)


Patch Instructions:

   To install this SUSE Security Update use YaST online_update.
   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Server for Raspberry Pi 12-SP2:

      zypper in -t patch SUSE-SLE-RPI-12-SP2-2017-138=1

   - SUSE Linux Enterprise Server 12-SP2:

      zypper in -t patch SUSE-SLE-SERVER-12-SP2-2017-138=1

   - SUSE Linux Enterprise Desktop 12-SP2:

      zypper in -t patch SUSE-SLE-DESKTOP-12-SP2-2017-138=1

   To bring your system up-to-date, use "zypper patch".


Package List:

   - SUSE Linux Enterprise Server for Raspberry Pi 12-SP2 (aarch64):

      openssh-7.2p2-66.1
      openssh-askpass-gnome-7.2p2-66.3
      openssh-askpass-gnome-debuginfo-7.2p2-66.3
      openssh-debuginfo-7.2p2-66.1
      openssh-debugsource-7.2p2-66.1
      openssh-fips-7.2p2-66.1
      openssh-helpers-7.2p2-66.1
      openssh-helpers-debuginfo-7.2p2-66.1

   - SUSE Linux Enterprise Server 12-SP2 (aarch64 ppc64le x86_64):

      openssh-7.2p2-66.1
      openssh-askpass-gnome-7.2p2-66.3
      openssh-askpass-gnome-debuginfo-7.2p2-66.3
      openssh-debuginfo-7.2p2-66.1
      openssh-debugsource-7.2p2-66.1
      openssh-fips-7.2p2-66.1
      openssh-helpers-7.2p2-66.1
      openssh-helpers-debuginfo-7.2p2-66.1

   - SUSE Linux Enterprise Desktop 12-SP2 (x86_64):

      openssh-7.2p2-66.1
      openssh-askpass-gnome-7.2p2-66.3
      openssh-askpass-gnome-debuginfo-7.2p2-66.3
      openssh-debuginfo-7.2p2-66.1
      openssh-debugsource-7.2p2-66.1
      openssh-helpers-7.2p2-66.1
      openssh-helpers-debuginfo-7.2p2-66.1


References:

   https://www.suse.com/security/cve/CVE-2016-10009.html
   https://www.suse.com/security/cve/CVE-2016-10010.html
   https://www.suse.com/security/cve/CVE-2016-10011.html
   https://www.suse.com/security/cve/CVE-2016-10012.html
   https://www.suse.com/security/cve/CVE-2016-8858.html
   https://bugzilla.suse.com/1005480
   https://bugzilla.suse.com/1005893
   https://bugzilla.suse.com/1006221
   https://bugzilla.suse.com/1016366
   https://bugzilla.suse.com/1016368
   https://bugzilla.suse.com/1016369
   https://bugzilla.suse.com/1016370