Security update for openssh

Announcement ID:	SUSE-SU-2017:0264-1
Rating:	moderate
References:	bsc#1005480 bsc#1005893 bsc#1006221 bsc#1016366 bsc#1016368 bsc#1016369 bsc#1016370
Cross-References:	CVE-2016-10009 CVE-2016-10010 CVE-2016-10011 CVE-2016-10012 CVE-2016-8858
CVSS scores:	CVE-2016-10009 ( NVD ): 7.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L CVE-2016-10010 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2016-10010 ( NVD ): 7.0 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2016-10011 ( NVD ): 5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVE-2016-10012 ( NVD ): 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2016-8858 ( SUSE ): 5.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L CVE-2016-8858 ( NVD ): 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products:	SUSE Linux Enterprise Desktop 12 SP2 SUSE Linux Enterprise High Performance Computing 12 SP2 SUSE Linux Enterprise Server 12 SP2 SUSE Linux Enterprise Server for SAP Applications 12 SP2 SUSE Linux Enterprise Server for the Raspberry Pi 12-SP2

An update that solves five vulnerabilities and has two security fixes can now be installed.

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 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 Desktop 12 SP2
  zypper in -t patch SUSE-SLE-DESKTOP-12-SP2-2017-138=1
• SUSE Linux Enterprise Server for the Raspberry Pi 12-SP2
  zypper in -t patch SUSE-SLE-RPI-12-SP2-2017-138=1
• SUSE Linux Enterprise High Performance Computing 12 SP2
  zypper in -t patch SUSE-SLE-SERVER-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 Server for SAP Applications 12 SP2
  zypper in -t patch SUSE-SLE-SERVER-12-SP2-2017-138=1

Package List:

• SUSE Linux Enterprise Desktop 12 SP2 (x86_64)
  • openssh-askpass-gnome-7.2p2-66.3
  • openssh-askpass-gnome-debuginfo-7.2p2-66.3
  • openssh-7.2p2-66.1
  • openssh-helpers-7.2p2-66.1
  • openssh-debugsource-7.2p2-66.1
  • openssh-debuginfo-7.2p2-66.1
  • openssh-helpers-debuginfo-7.2p2-66.1
• SUSE Linux Enterprise Server for the Raspberry Pi 12-SP2 (aarch64)
  • openssh-askpass-gnome-7.2p2-66.3
  • openssh-askpass-gnome-debuginfo-7.2p2-66.3
  • openssh-7.2p2-66.1
  • openssh-fips-7.2p2-66.1
  • openssh-helpers-7.2p2-66.1
  • openssh-debugsource-7.2p2-66.1
  • openssh-debuginfo-7.2p2-66.1
  • openssh-helpers-debuginfo-7.2p2-66.1
• SUSE Linux Enterprise High Performance Computing 12 SP2 (aarch64 x86_64)
  • openssh-askpass-gnome-7.2p2-66.3
  • openssh-askpass-gnome-debuginfo-7.2p2-66.3
  • openssh-7.2p2-66.1
  • openssh-fips-7.2p2-66.1
  • openssh-helpers-7.2p2-66.1
  • openssh-debugsource-7.2p2-66.1
  • openssh-debuginfo-7.2p2-66.1
  • openssh-helpers-debuginfo-7.2p2-66.1
• SUSE Linux Enterprise Server 12 SP2 (aarch64 ppc64le s390x x86_64)
  • openssh-askpass-gnome-7.2p2-66.3
  • openssh-askpass-gnome-debuginfo-7.2p2-66.3
  • openssh-7.2p2-66.1
  • openssh-fips-7.2p2-66.1
  • openssh-helpers-7.2p2-66.1
  • openssh-debugsource-7.2p2-66.1
  • openssh-debuginfo-7.2p2-66.1
  • openssh-helpers-debuginfo-7.2p2-66.1
• SUSE Linux Enterprise Server for SAP Applications 12 SP2 (ppc64le x86_64)
  • openssh-askpass-gnome-7.2p2-66.3
  • openssh-askpass-gnome-debuginfo-7.2p2-66.3
  • openssh-7.2p2-66.1
  • openssh-fips-7.2p2-66.1
  • openssh-helpers-7.2p2-66.1
  • openssh-debugsource-7.2p2-66.1
  • openssh-debuginfo-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/show_bug.cgi?id=1005480
• https://bugzilla.suse.com/show_bug.cgi?id=1005893
• https://bugzilla.suse.com/show_bug.cgi?id=1006221
• https://bugzilla.suse.com/show_bug.cgi?id=1016366
• https://bugzilla.suse.com/show_bug.cgi?id=1016368
• https://bugzilla.suse.com/show_bug.cgi?id=1016369
• https://bugzilla.suse.com/show_bug.cgi?id=1016370