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openSUSE-SU-2017:0344-1: moderate: Security update for openssh
openSUSE Security Update: Security update for openssh
______________________________________________________________________________

Announcement ID: openSUSE-SU-2017:0344-1
Rating: moderate
References: #1005480 #1005893 #1006221 #1016366 #1016368
#1016369 #1016370 #1021626
Cross-References: CVE-2016-10009 CVE-2016-10010 CVE-2016-10011
CVE-2016-10012 CVE-2016-8858
Affected Products:
openSUSE Leap 42.2
______________________________________________________________________________

An update that solves 5 vulnerabilities and has three 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 bsc#1021626)

This update was imported from the SUSE:SLE-12-SP2:Update update project.


Patch Instructions:

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

- openSUSE Leap 42.2:

zypper in -t patch openSUSE-2017-184=1

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


Package List:

- openSUSE Leap 42.2 (i586 x86_64):

openssh-7.2p2-9.1
openssh-askpass-gnome-7.2p2-9.1
openssh-askpass-gnome-debuginfo-7.2p2-9.1
openssh-cavs-7.2p2-9.1
openssh-debuginfo-7.2p2-9.1
openssh-debugsource-7.2p2-9.1
openssh-fips-7.2p2-9.1
openssh-helpers-7.2p2-9.1
openssh-helpers-debuginfo-7.2p2-9.1


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
https://bugzilla.suse.com/1021626


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