National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-6210 Detail

Current Description

sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static password when the username does not exist, which allows remote attackers to enumerate users by leveraging the timing difference between responses when a large password is provided.

Source:  MITRE      Last Modified:  02/13/2017      View Analysis Description

Quick Info

CVE Dictionary Entry:
CVE-2016-6210
Original release date:
02/13/2017
Last revised:
01/04/2018
Source:
US-CERT/NIST

Impact

CVSS Severity (version 3.0):
CVSS v3 Base Score:
5.9 Medium
Vector:
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N (legend)
Impact Score:
3.6
Exploitability Score:
2.2
CVSS Version 3 Metrics:
Attack Vector (AV):
Network
Attack Complexity (AC):
High
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
None
Availability (A):
None
CVSS Severity (version 2.0):
CVSS v2 Base Score:
4.3 MEDIUM
Vector:
(AV:N/AC:M/Au:N/C:P/I:N/A:N) (legend)
Impact Subscore:
2.9
Exploitability Subscore:
8.6
CVSS Version 2 Metrics:
Access Vector:
Network exploitable
Access Complexity:
Medium
Authentication:
Not required to exploit
Impact Type:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://seclists.org/fulldisclosure/2016/Jul/51 Mailing List; Third Party Advisory External Source FULLDISC 20160714 opensshd - user enumeration
http://www.debian.org/security/2016/dsa-3626 External Source DEBIAN DSA-3626
http://www.securityfocus.com/bid/91812 Third Party Advisory; VDB Entry External Source BID 91812
http://www.securitytracker.com/id/1036319 External Source SECTRACK 1036319
https://access.redhat.com/errata/RHSA-2017:2029 External Source REDHAT RHSA-2017:2029
https://access.redhat.com/errata/RHSA-2017:2563 External Source REDHAT RHSA-2017:2563
https://security.gentoo.org/glsa/201612-18 External Source GENTOO GLSA-201612-18
https://www.exploit-db.com/exploits/40113/ External Source EXPLOIT-DB 40113
https://www.exploit-db.com/exploits/40136/ External Source EXPLOIT-DB 40136
https://www.openssh.com/txt/release-7.3 Release Notes; Vendor Advisory External Source CONFIRM https://www.openssh.com/txt/release-7.3

Technical Details

Vulnerability Type (View All)

  • Information Leak / Disclosure (CWE-200)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1
OR
cpe:2.3:a:openbsd:openssh:*:p2:*:*:*:*:*:*    versions up to (including) 7.2

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History 7 change records found - show changes