UBUNTU-CVE-2018-20685

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    UBUNTU-CVE-2018-20685

    Published: 10 Jan 2019Last Modified: 4 Feb 2026
    Upstream:
    CVE-2018-20685
    Aliases:
    USN-3885-1

    Summary:

    Details: In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side.

    References: https://ubuntu.com/security/CVE-2018-20685, https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt, https://lists.mindrot.org/pipermail/openssh-unix-dev/2019-January/037459.html, https://ubuntu.com/security/notices/USN-3885-1, https://www.cve.org/CVERecord?id=CVE-2018-20685

    Affected packages

    Package

    Name: openssh

    Purl: pkg:deb/ubuntu/openssh@1:6.6p1-2ubuntu2.12?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:6.6p1-2ubuntu2.12

    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