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Red Hat 6 RHSA-2019:0711-01 Low: Openssh User Enumeration Issue

red hat
Calendar Grey April 9, 2019
Dist Redhat Esm H88
Debian releases a patch for OpenSSL on Stable 11 to address minor critical vulnerabilities in certificate handling.
An update for openssh is now available for Red Hat Enterprise Linux 6

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.

Summary

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.

Topics%20covered

Topics Covered

security advisory software update Red Hat Enterprise Linux authentication issue openssh low user enumeration

References

https://access.redhat.com/security/cve/CVE-2018-15473 https://access.redhat.com/security/updates/classification#low

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: openssh-5.3p1-124.el6_10.src.rpm
i386: openssh-5.3p1-124.el6_10.i686.rpm openssh-askpass-5.3p1-124.el6_10.i686.rpm openssh-clients-5.3p1-124.el6_10.i686.rpm openssh-debuginfo-5.3p1-124.el6_10.i686.rpm openssh-server-5.3p1-124.el6_10.i686.rpm
x86_64: openssh-5.3p1-124.el6_10.x86_64.rpm openssh-askpass-5.3p1-124.el6_10.x86_64.rpm openssh-clients-5.3p1-124.el6_10.x86_64.rpm openssh-debuginfo-5.3p1-124.el6_10.x86_64.rpm openssh-server-5.3p1-124.el6_10.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
i386: openssh-debuginfo-5.3p1-124.el6_10.i686.rpm openssh-ldap-5.3p1-124.el6_10.i686.rpm pam_ssh_agent_auth-0.9.3-124.el6_10.i686.rpm
x86_64: openssh-debuginfo-5.3p1-124.el6_10.i686.rpm openssh-debuginfo-5.3p1-124.el6_10.x86_64.rpm openssh-ldap-5.3p1-124.el6_10.x86_64.rpm pam_ssh_agent_auth-0.9.3-124.el6_10.i686.rpm pam_ssh_agent_auth-0.9.3-124.el6_10.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source: openssh-5.3p1-124.el6_10.src.rpm
x86_64: openssh-5.3p1-124.el6_10.x86_64.rpm openssh-clients-5.3p1-124.el6_10.x86_64.rpm openssh-debuginfo-5.3p1-124.el6_10.x86_64.rpm openssh-server-5.3p1-124.el6_10.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
x86_64: openssh-askpass-5.3p1-124.el6_10.x86_64.rpm

Read the Full Advisory


Severity
low
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:0711-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:0711
Issue date: 2019-04-09

Topic

An update for openssh is now available for Red Hat Enterprise Linux 6.Red Hat Product Security has rated this update as having a security impactof Low. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory software update Red Hat Enterprise Linux authentication issue openssh low user enumeration

Relevant Releases Architectures

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

Bugs Fixed

1619063 - CVE-2018-15473 openssh: User enumeration via malformed packets in authentication requests

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