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[RHSA-2016:0043-01] Moderate: openssh security update

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Red Hat Security Advisory

 

Synopsis: Moderate: openssh security update

Advisory ID: RHSA-2016:0043-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-0043.html

Issue date: 2016-01-14

CVE Names: CVE-2016-0777 CVE-2016-0778

=====================================================================

 

1. Summary:

 

Updated openssh packages that fix two security issues are now available for

Red Hat Enterprise Linux 7.

 

Red Hat Product Security has rated this update as having Moderate security

impact. Common Vulnerability Scoring System (CVSS) base scores, which give

detailed severity ratings, are available for each vulnerability from the

CVE links in the References section.

 

2. Relevant releases/architectures:

 

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

 

3. Description:

 

OpenSSH is OpenBSD's SSH (Secure Shell) protocol implementation.

These packages include the core files necessary for both the OpenSSH client

and server.

 

An information leak flaw was found in the way the OpenSSH client roaming

feature was implemented. A malicious server could potentially use this flaw

to leak portions of memory (possibly including private SSH keys) of a

successfully authenticated OpenSSH client. (CVE-2016-0777)

 

A buffer overflow flaw was found in the way the OpenSSH client roaming

feature was implemented. A malicious server could potentially use this flaw

to execute arbitrary code on a successfully authenticated OpenSSH client if

that client used certain non-default configuration options. (CVE-2016-0778)

 

Red Hat would like to thank Qualys for reporting these issues.

 

All openssh users are advised to upgrade to these updated packages, which

contain backported patches to correct these issues. After installing this

update, the OpenSSH server daemon (sshd) will be restarted automatically.

 

4. Solution:

 

Before applying this update, make sure all previously released errata

relevant to your system have been applied.

 

For details on how to apply this update, refer to:

 

https://access.redhat.com/articles/11258

 

5. Bugs fixed (https://bugzilla.redhat.com/):

 

1298032 - CVE-2016-0777 OpenSSH: Client Information leak due to use of roaming connection feature

1298033 - CVE-2016-0778 OpenSSH: Client buffer-overflow when using roaming connections

 

6. Package List:

 

Red Hat Enterprise Linux Client (v. 7):

 

Source:

openssh-6.6.1p1-23.el7_2.src.rpm

 

x86_64:

openssh-6.6.1p1-23.el7_2.x86_64.rpm

openssh-askpass-6.6.1p1-23.el7_2.x86_64.rpm

openssh-clients-6.6.1p1-23.el7_2.x86_64.rpm

openssh-debuginfo-6.6.1p1-23.el7_2.x86_64.rpm

openssh-keycat-6.6.1p1-23.el7_2.x86_64.rpm

openssh-server-6.6.1p1-23.el7_2.x86_64.rpm

 

Red Hat Enterprise Linux Client Optional (v. 7):

 

x86_64:

openssh-debuginfo-6.6.1p1-23.el7_2.i686.rpm

openssh-debuginfo-6.6.1p1-23.el7_2.x86_64.rpm

openssh-ldap-6.6.1p1-23.el7_2.x86_64.rpm

openssh-server-sysvinit-6.6.1p1-23.el7_2.x86_64.rpm

pam_ssh_agent_auth-0.9.3-9.23.el7_2.i686.rpm

pam_ssh_agent_auth-0.9.3-9.23.el7_2.x86_64.rpm

 

Red Hat Enterprise Linux ComputeNode (v. 7):

 

Source:

openssh-6.6.1p1-23.el7_2.src.rpm

 

x86_64:

openssh-6.6.1p1-23.el7_2.x86_64.rpm

openssh-clients-6.6.1p1-23.el7_2.x86_64.rpm

openssh-debuginfo-6.6.1p1-23.el7_2.x86_64.rpm

openssh-keycat-6.6.1p1-23.el7_2.x86_64.rpm

openssh-server-6.6.1p1-23.el7_2.x86_64.rpm

 

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

 

x86_64:

openssh-askpass-6.6.1p1-23.el7_2.x86_64.rpm

openssh-debuginfo-6.6.1p1-23.el7_2.i686.rpm

openssh-debuginfo-6.6.1p1-23.el7_2.x86_64.rpm

openssh-ldap-6.6.1p1-23.el7_2.x86_64.rpm

openssh-server-sysvinit-6.6.1p1-23.el7_2.x86_64.rpm

pam_ssh_agent_auth-0.9.3-9.23.el7_2.i686.rpm

pam_ssh_agent_auth-0.9.3-9.23.el7_2.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 7):

 

Source:

openssh-6.6.1p1-23.el7_2.src.rpm

 

ppc64:

openssh-6.6.1p1-23.el7_2.ppc64.rpm

openssh-askpass-6.6.1p1-23.el7_2.ppc64.rpm

openssh-clients-6.6.1p1-23.el7_2.ppc64.rpm

openssh-debuginfo-6.6.1p1-23.el7_2.ppc64.rpm

openssh-keycat-6.6.1p1-23.el7_2.ppc64.rpm

openssh-server-6.6.1p1-23.el7_2.ppc64.rpm

 

ppc64le:

openssh-6.6.1p1-23.el7_2.ppc64le.rpm

openssh-askpass-6.6.1p1-23.el7_2.ppc64le.rpm

openssh-clients-6.6.1p1-23.el7_2.ppc64le.rpm

openssh-debuginfo-6.6.1p1-23.el7_2.ppc64le.rpm

openssh-keycat-6.6.1p1-23.el7_2.ppc64le.rpm

openssh-server-6.6.1p1-23.el7_2.ppc64le.rpm

 

s390x:

openssh-6.6.1p1-23.el7_2.s390x.rpm

openssh-askpass-6.6.1p1-23.el7_2.s390x.rpm

openssh-clients-6.6.1p1-23.el7_2.s390x.rpm

openssh-debuginfo-6.6.1p1-23.el7_2.s390x.rpm

openssh-keycat-6.6.1p1-23.el7_2.s390x.rpm

openssh-server-6.6.1p1-23.el7_2.s390x.rpm

 

x86_64:

openssh-6.6.1p1-23.el7_2.x86_64.rpm

openssh-askpass-6.6.1p1-23.el7_2.x86_64.rpm

openssh-clients-6.6.1p1-23.el7_2.x86_64.rpm

openssh-debuginfo-6.6.1p1-23.el7_2.x86_64.rpm

openssh-keycat-6.6.1p1-23.el7_2.x86_64.rpm

openssh-server-6.6.1p1-23.el7_2.x86_64.rpm

 

Red Hat Enterprise Linux Server Optional (v. 7):

 

ppc64:

openssh-debuginfo-6.6.1p1-23.el7_2.ppc.rpm

openssh-debuginfo-6.6.1p1-23.el7_2.ppc64.rpm

openssh-ldap-6.6.1p1-23.el7_2.ppc64.rpm

openssh-server-sysvinit-6.6.1p1-23.el7_2.ppc64.rpm

pam_ssh_agent_auth-0.9.3-9.23.el7_2.ppc.rpm

pam_ssh_agent_auth-0.9.3-9.23.el7_2.ppc64.rpm

 

ppc64le:

openssh-debuginfo-6.6.1p1-23.el7_2.ppc64le.rpm

openssh-ldap-6.6.1p1-23.el7_2.ppc64le.rpm

openssh-server-sysvinit-6.6.1p1-23.el7_2.ppc64le.rpm

pam_ssh_agent_auth-0.9.3-9.23.el7_2.ppc64le.rpm

 

s390x:

openssh-debuginfo-6.6.1p1-23.el7_2.s390.rpm

openssh-debuginfo-6.6.1p1-23.el7_2.s390x.rpm

openssh-ldap-6.6.1p1-23.el7_2.s390x.rpm

openssh-server-sysvinit-6.6.1p1-23.el7_2.s390x.rpm

pam_ssh_agent_auth-0.9.3-9.23.el7_2.s390.rpm

pam_ssh_agent_auth-0.9.3-9.23.el7_2.s390x.rpm

 

x86_64:

openssh-debuginfo-6.6.1p1-23.el7_2.i686.rpm

openssh-debuginfo-6.6.1p1-23.el7_2.x86_64.rpm

openssh-ldap-6.6.1p1-23.el7_2.x86_64.rpm

openssh-server-sysvinit-6.6.1p1-23.el7_2.x86_64.rpm

pam_ssh_agent_auth-0.9.3-9.23.el7_2.i686.rpm

pam_ssh_agent_auth-0.9.3-9.23.el7_2.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 7):

 

Source:

openssh-6.6.1p1-23.el7_2.src.rpm

 

x86_64:

openssh-6.6.1p1-23.el7_2.x86_64.rpm

openssh-askpass-6.6.1p1-23.el7_2.x86_64.rpm

openssh-clients-6.6.1p1-23.el7_2.x86_64.rpm

openssh-debuginfo-6.6.1p1-23.el7_2.x86_64.rpm

openssh-keycat-6.6.1p1-23.el7_2.x86_64.rpm

openssh-server-6.6.1p1-23.el7_2.x86_64.rpm

 

Red Hat Enterprise Linux Workstation Optional (v. 7):

 

x86_64:

openssh-debuginfo-6.6.1p1-23.el7_2.i686.rpm

openssh-debuginfo-6.6.1p1-23.el7_2.x86_64.rpm

openssh-ldap-6.6.1p1-23.el7_2.x86_64.rpm

openssh-server-sysvinit-6.6.1p1-23.el7_2.x86_64.rpm

pam_ssh_agent_auth-0.9.3-9.23.el7_2.i686.rpm

pam_ssh_agent_auth-0.9.3-9.23.el7_2.x86_64.rpm

 

These packages are GPG signed by Red Hat for security. Our key and

details on how to verify the signature are available from

https://access.redhat.com/security/team/key/

 

7. References:

 

https://access.redhat.com/security/cve/CVE-2016-0777

https://access.redhat.com/security/cve/CVE-2016-0778

https://access.redhat.com/security/updates/classification/#moderate

https://access.redhat.com/articles/2123781

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2016 Red Hat, Inc.

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