UBUNTU-CVE-2016-6515

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    UBUNTU-CVE-2016-6515

    Published: 7 Aug 2016Last Modified: 4 Feb 2026
    Upstream:
    CVE-2016-6515
    Aliases:
    USN-3061-1

    Summary:

    Details: The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password authentication, which allows remote attackers to cause a denial of service (crypt CPU consumption) via a long string.

    References: https://ubuntu.com/security/CVE-2016-6515, http://openwall.com/lists/oss-security/2016/08/01/2, https://ubuntu.com/security/notices/USN-3061-1, https://www.cve.org/CVERecord?id=CVE-2016-6515

    Affected packages

    Package

    Name: openssh

    Purl: pkg:deb/ubuntu/openssh@1:6.6p1-2ubuntu2.8?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-2016-6515 | CVE-DB