An update for openssh is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from

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====================================================================                   Red Hat Security Advisory

Synopsis:          Low: openssh security, bug fix, and enhancement update
Advisory ID:       RHSA-2019:2143-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2019:2143
Issue date:        2019-08-06
CVE Names:         CVE-2018-15473 
====================================================================
1. Summary:

An update for openssh is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Low. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) 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 an SSH protocol implementation supported by a number of Linux,
UNIX, and similar operating systems. It includes the core files necessary
for both the OpenSSH client and server.

Security Fix(es):

* openssh: User enumeration via malformed packets in authentication
requests (CVE-2018-15473)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 7.7 Release Notes linked from the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

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

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

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

1583735 - Permission denied reading authorized_keys when setting AuthorizedKeysCommand
1619063 - CVE-2018-15473 openssh: User enumeration via malformed packets in authentication requests
1712053 - tmux session not attached automatically during manual installation on s390x
1722446 - openssh FIPS cipher list has an extra comma in it

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
openssh-7.4p1-21.el7.src.rpm

x86_64:
openssh-7.4p1-21.el7.x86_64.rpm
openssh-askpass-7.4p1-21.el7.x86_64.rpm
openssh-clients-7.4p1-21.el7.x86_64.rpm
openssh-debuginfo-7.4p1-21.el7.x86_64.rpm
openssh-keycat-7.4p1-21.el7.x86_64.rpm
openssh-server-7.4p1-21.el7.x86_64.rpm

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

x86_64:
openssh-cavs-7.4p1-21.el7.x86_64.rpm
openssh-debuginfo-7.4p1-21.el7.i686.rpm
openssh-debuginfo-7.4p1-21.el7.x86_64.rpm
openssh-ldap-7.4p1-21.el7.x86_64.rpm
openssh-server-sysvinit-7.4p1-21.el7.x86_64.rpm
pam_ssh_agent_auth-0.10.3-2.21.el7.i686.rpm
pam_ssh_agent_auth-0.10.3-2.21.el7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
openssh-7.4p1-21.el7.src.rpm

x86_64:
openssh-7.4p1-21.el7.x86_64.rpm
openssh-clients-7.4p1-21.el7.x86_64.rpm
openssh-debuginfo-7.4p1-21.el7.x86_64.rpm
openssh-keycat-7.4p1-21.el7.x86_64.rpm
openssh-server-7.4p1-21.el7.x86_64.rpm

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

x86_64:
openssh-askpass-7.4p1-21.el7.x86_64.rpm
openssh-cavs-7.4p1-21.el7.x86_64.rpm
openssh-debuginfo-7.4p1-21.el7.i686.rpm
openssh-debuginfo-7.4p1-21.el7.x86_64.rpm
openssh-ldap-7.4p1-21.el7.x86_64.rpm
openssh-server-sysvinit-7.4p1-21.el7.x86_64.rpm
pam_ssh_agent_auth-0.10.3-2.21.el7.i686.rpm
pam_ssh_agent_auth-0.10.3-2.21.el7.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
openssh-7.4p1-21.el7.src.rpm

ppc64:
openssh-7.4p1-21.el7.ppc64.rpm
openssh-askpass-7.4p1-21.el7.ppc64.rpm
openssh-clients-7.4p1-21.el7.ppc64.rpm
openssh-debuginfo-7.4p1-21.el7.ppc64.rpm
openssh-keycat-7.4p1-21.el7.ppc64.rpm
openssh-server-7.4p1-21.el7.ppc64.rpm

ppc64le:
openssh-7.4p1-21.el7.ppc64le.rpm
openssh-askpass-7.4p1-21.el7.ppc64le.rpm
openssh-clients-7.4p1-21.el7.ppc64le.rpm
openssh-debuginfo-7.4p1-21.el7.ppc64le.rpm
openssh-keycat-7.4p1-21.el7.ppc64le.rpm
openssh-server-7.4p1-21.el7.ppc64le.rpm

s390x:
openssh-7.4p1-21.el7.s390x.rpm
openssh-askpass-7.4p1-21.el7.s390x.rpm
openssh-clients-7.4p1-21.el7.s390x.rpm
openssh-debuginfo-7.4p1-21.el7.s390x.rpm
openssh-keycat-7.4p1-21.el7.s390x.rpm
openssh-server-7.4p1-21.el7.s390x.rpm

x86_64:
openssh-7.4p1-21.el7.x86_64.rpm
openssh-askpass-7.4p1-21.el7.x86_64.rpm
openssh-clients-7.4p1-21.el7.x86_64.rpm
openssh-debuginfo-7.4p1-21.el7.x86_64.rpm
openssh-keycat-7.4p1-21.el7.x86_64.rpm
openssh-server-7.4p1-21.el7.x86_64.rpm

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

ppc64:
openssh-cavs-7.4p1-21.el7.ppc64.rpm
openssh-debuginfo-7.4p1-21.el7.ppc.rpm
openssh-debuginfo-7.4p1-21.el7.ppc64.rpm
openssh-ldap-7.4p1-21.el7.ppc64.rpm
openssh-server-sysvinit-7.4p1-21.el7.ppc64.rpm
pam_ssh_agent_auth-0.10.3-2.21.el7.ppc.rpm
pam_ssh_agent_auth-0.10.3-2.21.el7.ppc64.rpm

ppc64le:
openssh-cavs-7.4p1-21.el7.ppc64le.rpm
openssh-debuginfo-7.4p1-21.el7.ppc64le.rpm
openssh-ldap-7.4p1-21.el7.ppc64le.rpm
openssh-server-sysvinit-7.4p1-21.el7.ppc64le.rpm
pam_ssh_agent_auth-0.10.3-2.21.el7.ppc64le.rpm

s390x:
openssh-cavs-7.4p1-21.el7.s390x.rpm
openssh-debuginfo-7.4p1-21.el7.s390.rpm
openssh-debuginfo-7.4p1-21.el7.s390x.rpm
openssh-ldap-7.4p1-21.el7.s390x.rpm
openssh-server-sysvinit-7.4p1-21.el7.s390x.rpm
pam_ssh_agent_auth-0.10.3-2.21.el7.s390.rpm
pam_ssh_agent_auth-0.10.3-2.21.el7.s390x.rpm

x86_64:
openssh-cavs-7.4p1-21.el7.x86_64.rpm
openssh-debuginfo-7.4p1-21.el7.i686.rpm
openssh-debuginfo-7.4p1-21.el7.x86_64.rpm
openssh-ldap-7.4p1-21.el7.x86_64.rpm
openssh-server-sysvinit-7.4p1-21.el7.x86_64.rpm
pam_ssh_agent_auth-0.10.3-2.21.el7.i686.rpm
pam_ssh_agent_auth-0.10.3-2.21.el7.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
openssh-7.4p1-21.el7.src.rpm

x86_64:
openssh-7.4p1-21.el7.x86_64.rpm
openssh-askpass-7.4p1-21.el7.x86_64.rpm
openssh-clients-7.4p1-21.el7.x86_64.rpm
openssh-debuginfo-7.4p1-21.el7.x86_64.rpm
openssh-keycat-7.4p1-21.el7.x86_64.rpm
openssh-server-7.4p1-21.el7.x86_64.rpm

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

x86_64:
openssh-cavs-7.4p1-21.el7.x86_64.rpm
openssh-debuginfo-7.4p1-21.el7.i686.rpm
openssh-debuginfo-7.4p1-21.el7.x86_64.rpm
openssh-ldap-7.4p1-21.el7.x86_64.rpm
openssh-server-sysvinit-7.4p1-21.el7.x86_64.rpm
pam_ssh_agent_auth-0.10.3-2.21.el7.i686.rpm
pam_ssh_agent_auth-0.10.3-2.21.el7.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-2018-15473
https://access.redhat.com/security/updates/classification/#low
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.7_release_notes/index

8. Contact:

The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2019 Red Hat, Inc.
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