GLSA 201810-03: OpenSSH: User enumeration vulnerability

http://security.gentoo.org/

Severity:	low
Title:	OpenSSH: User enumeration vulnerability
Date:	10/06/2018
Bugs:	#664264
ID:	201810-03

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

Package	Vulnerable	Unaffected	Architecture(s)
net-misc/openssh	< 7.7_p1-r8	>= 7.7_p1-r8	All supported architectures

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

CVE-2018-15473

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201810-03.xml

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.