UBUNTU-CVE-2016-6210

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    UBUNTU-CVE-2016-6210

    Published: 18 Jul 2016Last Modified: 1 Jun 2026
    Upstream:
    CVE-2016-6210
    Aliases:
    USN-3061-1

    Summary:

    Details: 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.

    References: https://ubuntu.com/security/CVE-2016-6210, http://seclists.org/fulldisclosure/2016/Jul/51, https://ubuntu.com/security/notices/USN-3061-1, https://www.cve.org/CVERecord?id=CVE-2016-6210

    Affected packages

    Package

    Name: openssh

    Purl: pkg:deb/ubuntu/openssh?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:6.6p1-2ubuntu2.8

    Affected versions

    1:6.2p2-6

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2016-6210 | CVE-DB