UBUNTU-CVE-2015-5352

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    UBUNTU-CVE-2015-5352

    Published: 2 Aug 2015Last Modified: 4 Feb 2026
    Upstream:
    CVE-2015-5352
    Aliases:
    USN-2710-1

    Summary:

    Details: The x11_open_helper function in channels.c in ssh in OpenSSH before 6.9, when ForwardX11Trusted mode is not used, lacks a check of the refusal deadline for X connections, which makes it easier for remote attackers to bypass intended access restrictions via a connection outside of the permitted time window.

    References: https://ubuntu.com/security/CVE-2015-5352, http://www.openwall.com/lists/oss-security/2015/07/01/7, https://thejh.net/written-stuff/openssh-6.8-xsecurity, https://ubuntu.com/security/notices/USN-2710-1, https://www.cve.org/CVERecord?id=CVE-2015-5352

    Affected packages

    Package

    Name: openssh

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

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

    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