UBUNTU-CVE-2018-15473

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    UBUNTU-CVE-2018-15473

    Published: 17 Aug 2018Last Modified: 4 Feb 2026
    Upstream:
    CVE-2018-15473
    Aliases:
    USN-3809-1

    Summary:

    Details: OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c.

    References: https://ubuntu.com/security/CVE-2018-15473, http://www.openwall.com/lists/oss-security/2018/08/15/5, https://github.com/openbsd/src/commit/779974d35b4859c07bc3cb8a12c74b43b0a7d1e0, https://ubuntu.com/security/notices/USN-3809-1, https://www.cve.org/CVERecord?id=CVE-2018-15473

    Affected packages

    Package

    Name: openssh

    Purl: pkg:deb/ubuntu/openssh@1:6.6p1-2ubuntu2.11?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:6.6p1-2ubuntu2.11

    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