UpHeron
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Servers and applications

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 difference between responses when a large password is provided.

Severity
Medium 5.9
Published
13 Feb 2017
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Sources
NVD

Affected software

SoftwareAffected versions
OpenSSHServers and applications · cpe:a:openbsd:openssh
  • Every version up to 7.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2016-6210
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2016-6210