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Test ID:1.3.6.1.4.1.25623.1.0.813864
Category:General
Title:OpenSSH User Enumeration Vulnerability-Aug18 (Linux)
Summary:This host is installed with openssh and; is prone to user enumeration vulnerability.
Description:Summary:
This host is installed with openssh and
is prone to user enumeration vulnerability.

Vulnerability Insight:
The flaw is due to not delaying bailout for
an invalid authenticating user until after the packet containing the request
has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and
auth2-pubkey.c

Vulnerability Impact:
Successfully exploitation will allow remote
attacker to test whether a certain user exists or not (username enumeration)
on a target OpenSSH server.

Impact Level: Application

Affected Software/OS:
OpenSSH versions 7.7 and prior on Linux

Solution:
No known solution is available as of 21st
August, 2018. Information regarding this issue will be updated once solution
details are available. For updates refer to Reference links.

CVSS Score:
5.0

CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:P/A:N

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2018-15473
CopyrightCopyright (C) 2018 Greenbone Networks GmbH

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