UBUNTU-CVE-2016-0778

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    UBUNTU-CVE-2016-0778

    Published: 14 Jan 2016Last Modified: 1 Jun 2026
    Upstream:
    CVE-2016-0778
    Aliases:
    USN-2869-1

    Summary:

    Details: The (1) roaming_read and (2) roaming_write functions in roaming_common.c in the client in OpenSSH 5.x, 6.x, and 7.x before 7.1p2, when certain proxy and forward options are enabled, do not properly maintain connection file descriptors, which allows remote servers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact by requesting many forwardings.

    References: https://ubuntu.com/security/CVE-2016-0778, http://www.undeadly.org/cgi?action=article&sid=20160114142733, http://article.gmane.org/gmane.comp.security.oss.general/18580, https://ubuntu.com/security/notices/USN-2869-1, https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/OpenSSHClientRoaming, https://www.cve.org/CVERecord?id=CVE-2016-0778

    Affected packages

    Package

    Name: openssh

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:6.6p1-2ubuntu2.4

    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-2016-0778 | CVE-DB