CVE-2016-6210

5.9 MEDIUM
Published: February 13, 2017 Modified: May 29, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://seclists.org/fulldisclosure/2016/Jul/51
Source: cve@mitre.org
Mailing List Third Party Advisory
http://www.securityfocus.com/bid/91812
Source: cve@mitre.org
Third Party Advisory VDB Entry
https://www.openssh.com/txt/release-7.3
Source: cve@mitre.org
Release Notes Vendor Advisory
http://seclists.org/fulldisclosure/2016/Jul/51
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://www.debian.org/security/2016/dsa-3626
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.securityfocus.com/bid/91812
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1036319
Source: af854a3a-2127-422b-91ae-364da2661108
https://access.redhat.com/errata/RHSA-2017:2029
Source: af854a3a-2127-422b-91ae-364da2661108
https://access.redhat.com/errata/RHSA-2017:2563
Source: af854a3a-2127-422b-91ae-364da2661108
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
Source: af854a3a-2127-422b-91ae-364da2661108
https://security.gentoo.org/glsa/201612-18
Source: af854a3a-2127-422b-91ae-364da2661108
https://security.netapp.com/advisory/ntap-20190206-0001/
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.exploit-db.com/exploits/40113/
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.exploit-db.com/exploits/40136/
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.openssh.com/txt/release-7.3
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes Vendor Advisory

24 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.9 / 10.0
EPSS (Exploit Probability)
88.9%
100th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

openbsd