Information disclosure in Openbsd Openssh

CVE-2016-6210

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 di…

Vulnerability class: Information Disclosure

EPSS: 0.900 (99.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2016-6210?
CVE-2016-6210 is a medium-severity vulnerability in Openbsd Openssh, classified under Information Disclosure. CVSS score: 5.9/10. Published 2017-02-13.
How severe is CVE-2016-6210?
Medium severity. CVSS v3 base score is 5.9 out of 10.
Is CVE-2016-6210 known to be exploited?
40 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.