Home / mailings [gentoo-announce] [ GLSA 201810-03 ] OpenSSH: User enumeration vulnerability
Posted on 06 October 2018
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Gentoo Linux Security Advisory GLSA 201810-03
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https://security.gentoo.org/
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Severity: Low
Title: OpenSSH: User enumeration vulnerability
Date: October 06, 2018
Bugs: #664264
ID: 201810-03
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Synopsis
========
A vulnerability in OpenSSH might allow remote attackers to determine
valid usernames.
Background
==========
OpenSSH is a complete SSH protocol implementation that includes SFTP
client and server support.
Affected packages
=================
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Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/openssh < 7.7_p1-r8 >= 7.7_p1-r8
Description
===========
It was discovered that OpenSSH was prone to a user enumeration
vulnerability.
Impact
======
A remote attacker could conduct user enumeration.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All OpenSSH users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/openssh-7.7_p1-r8"
References
==========
[ 1 ] CVE-2018-15473
https://nvd.nist.gov/vuln/detail/CVE-2018-15473
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201810-03
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.
License
=======
Copyright 2018 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
https://creativecommons.org/licenses/by-sa/2.5
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