[RHSA-2016:0465-01] Moderate: openssh security update

[news 28]

-----BEGIN PGP SIGNED MESSAGE-----

Hash: SHA1

 

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

Red Hat Security Advisory

 

Synopsis: Moderate: openssh security update

Advisory ID: RHSA-2016:0465-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-0465.html

Issue date: 2016-03-21

CVE Names: CVE-2016-1908 CVE-2016-3115

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

 

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.

 

It was discovered that the OpenSSH server did not sanitize data received

in requests to enable X11 forwarding. An authenticated client with

restricted SSH access could possibly use this flaw to bypass intended

restrictions. (CVE-2016-3115)

 

An access flaw was discovered in OpenSSH; the OpenSSH client did not

correctly handle failures to generate authentication cookies for untrusted

X11 forwarding. A malicious or compromised remote X application could

possibly use this flaw to establish a trusted connection to the local X

server, even if only untrusted X11 forwarding was requested.

(CVE-2016-1908)

 

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/):

 

1298741 - CVE-2016-1908 openssh: possible fallback from untrusted to trusted X11 forwarding

1316829 - CVE-2016-3115 openssh: missing sanitisation of input for X11 forwarding

 

6. Package List:

 

Red Hat Enterprise Linux Client (v. 7):

 

Source:

openssh-6.6.1p1-25.el7_2.src.rpm

 

x86_64:

openssh-6.6.1p1-25.el7_2.x86_64.rpm

openssh-askpass-6.6.1p1-25.el7_2.x86_64.rpm

openssh-clients-6.6.1p1-25.el7_2.x86_64.rpm

openssh-debuginfo-6.6.1p1-25.el7_2.x86_64.rpm

openssh-keycat-6.6.1p1-25.el7_2.x86_64.rpm

openssh-server-6.6.1p1-25.el7_2.x86_64.rpm

 

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

 

x86_64:

openssh-debuginfo-6.6.1p1-25.el7_2.i686.rpm

openssh-debuginfo-6.6.1p1-25.el7_2.x86_64.rpm

openssh-ldap-6.6.1p1-25.el7_2.x86_64.rpm

openssh-server-sysvinit-6.6.1p1-25.el7_2.x86_64.rpm

pam_ssh_agent_auth-0.9.3-9.25.el7_2.i686.rpm

pam_ssh_agent_auth-0.9.3-9.25.el7_2.x86_64.rpm

 

Red Hat Enterprise Linux ComputeNode (v. 7):

 

Source:

openssh-6.6.1p1-25.el7_2.src.rpm

 

x86_64:

openssh-6.6.1p1-25.el7_2.x86_64.rpm

openssh-clients-6.6.1p1-25.el7_2.x86_64.rpm

openssh-debuginfo-6.6.1p1-25.el7_2.x86_64.rpm

openssh-keycat-6.6.1p1-25.el7_2.x86_64.rpm

openssh-server-6.6.1p1-25.el7_2.x86_64.rpm

 

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

 

x86_64:

openssh-askpass-6.6.1p1-25.el7_2.x86_64.rpm

openssh-debuginfo-6.6.1p1-25.el7_2.i686.rpm

openssh-debuginfo-6.6.1p1-25.el7_2.x86_64.rpm

openssh-ldap-6.6.1p1-25.el7_2.x86_64.rpm

openssh-server-sysvinit-6.6.1p1-25.el7_2.x86_64.rpm

pam_ssh_agent_auth-0.9.3-9.25.el7_2.i686.rpm

pam_ssh_agent_auth-0.9.3-9.25.el7_2.x86_64.rpm

 

Red Hat Enterprise Linux Server (v. 7):

 

Source:

openssh-6.6.1p1-25.el7_2.src.rpm

 

ppc64:

openssh-6.6.1p1-25.el7_2.ppc64.rpm

openssh-askpass-6.6.1p1-25.el7_2.ppc64.rpm

openssh-clients-6.6.1p1-25.el7_2.ppc64.rpm

openssh-debuginfo-6.6.1p1-25.el7_2.ppc64.rpm

openssh-keycat-6.6.1p1-25.el7_2.ppc64.rpm

openssh-server-6.6.1p1-25.el7_2.ppc64.rpm

 

ppc64le:

openssh-6.6.1p1-25.el7_2.ppc64le.rpm

openssh-askpass-6.6.1p1-25.el7_2.ppc64le.rpm

openssh-clients-6.6.1p1-25.el7_2.ppc64le.rpm

openssh-debuginfo-6.6.1p1-25.el7_2.ppc64le.rpm

openssh-keycat-6.6.1p1-25.el7_2.ppc64le.rpm

openssh-server-6.6.1p1-25.el7_2.ppc64le.rpm

 

s390x:

openssh-6.6.1p1-25.el7_2.s390x.rpm

openssh-askpass-6.6.1p1-25.el7_2.s390x.rpm

openssh-clients-6.6.1p1-25.el7_2.s390x.rpm

openssh-debuginfo-6.6.1p1-25.el7_2.s390x.rpm

openssh-keycat-6.6.1p1-25.el7_2.s390x.rpm

openssh-server-6.6.1p1-25.el7_2.s390x.rpm

 

x86_64:

openssh-6.6.1p1-25.el7_2.x86_64.rpm

openssh-askpass-6.6.1p1-25.el7_2.x86_64.rpm

openssh-clients-6.6.1p1-25.el7_2.x86_64.rpm

openssh-debuginfo-6.6.1p1-25.el7_2.x86_64.rpm

openssh-keycat-6.6.1p1-25.el7_2.x86_64.rpm

openssh-server-6.6.1p1-25.el7_2.x86_64.rpm

 

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

 

ppc64:

openssh-debuginfo-6.6.1p1-25.el7_2.ppc.rpm

openssh-debuginfo-6.6.1p1-25.el7_2.ppc64.rpm

openssh-ldap-6.6.1p1-25.el7_2.ppc64.rpm

openssh-server-sysvinit-6.6.1p1-25.el7_2.ppc64.rpm

pam_ssh_agent_auth-0.9.3-9.25.el7_2.ppc.rpm

pam_ssh_agent_auth-0.9.3-9.25.el7_2.ppc64.rpm

 

ppc64le:

openssh-debuginfo-6.6.1p1-25.el7_2.ppc64le.rpm

openssh-ldap-6.6.1p1-25.el7_2.ppc64le.rpm

openssh-server-sysvinit-6.6.1p1-25.el7_2.ppc64le.rpm

pam_ssh_agent_auth-0.9.3-9.25.el7_2.ppc64le.rpm

 

s390x:

openssh-debuginfo-6.6.1p1-25.el7_2.s390.rpm

openssh-debuginfo-6.6.1p1-25.el7_2.s390x.rpm

openssh-ldap-6.6.1p1-25.el7_2.s390x.rpm

openssh-server-sysvinit-6.6.1p1-25.el7_2.s390x.rpm

pam_ssh_agent_auth-0.9.3-9.25.el7_2.s390.rpm

pam_ssh_agent_auth-0.9.3-9.25.el7_2.s390x.rpm

 

x86_64:

openssh-debuginfo-6.6.1p1-25.el7_2.i686.rpm

openssh-debuginfo-6.6.1p1-25.el7_2.x86_64.rpm

openssh-ldap-6.6.1p1-25.el7_2.x86_64.rpm

openssh-server-sysvinit-6.6.1p1-25.el7_2.x86_64.rpm

pam_ssh_agent_auth-0.9.3-9.25.el7_2.i686.rpm

pam_ssh_agent_auth-0.9.3-9.25.el7_2.x86_64.rpm

 

Red Hat Enterprise Linux Workstation (v. 7):

 

Source:

openssh-6.6.1p1-25.el7_2.src.rpm

 

x86_64:

openssh-6.6.1p1-25.el7_2.x86_64.rpm

openssh-askpass-6.6.1p1-25.el7_2.x86_64.rpm

openssh-clients-6.6.1p1-25.el7_2.x86_64.rpm

openssh-debuginfo-6.6.1p1-25.el7_2.x86_64.rpm

openssh-keycat-6.6.1p1-25.el7_2.x86_64.rpm

openssh-server-6.6.1p1-25.el7_2.x86_64.rpm

 

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

 

x86_64:

openssh-debuginfo-6.6.1p1-25.el7_2.i686.rpm

openssh-debuginfo-6.6.1p1-25.el7_2.x86_64.rpm

openssh-ldap-6.6.1p1-25.el7_2.x86_64.rpm

openssh-server-sysvinit-6.6.1p1-25.el7_2.x86_64.rpm

pam_ssh_agent_auth-0.9.3-9.25.el7_2.i686.rpm

pam_ssh_agent_auth-0.9.3-9.25.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-2016-1908

https://access.redhat.com/security/cve/CVE-2016-3115

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

 

8. Contact:

 

The Red Hat security contact is . More contact

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

 

Copyright 2016 Red Hat, Inc.

-----BEGIN PGP SIGNATURE-----

Version: GnuPG v1

 

iD8DBQFW8F77XlSAg2UNWIIRAswbAJ4qRWmrkQpejHbmVYhNXavXLU0udwCdGmJ3

Gc0CjsXsB0foUSGfwWmD1ic=

=N81o

-----END PGP SIGNATURE-----

 

 

--