UBUNTU-CVE-2019-6111

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    UBUNTU-CVE-2019-6111

    Published: 14 Jan 2019Last Modified: 4 Feb 2026
    Upstream:
    CVE-2019-6111

    Summary:

    Details: An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the server chooses which files/directories are sent to the client. However, the scp client only performs cursory validation of the object name returned (only directory traversal attacks are prevented). A malicious scp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the scp client target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as well (for example, to overwrite the .ssh/authorized_keys file).

    References: https://ubuntu.com/security/CVE-2019-6111, 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://ubuntu.com/security/notices/USN-3885-2, https://www.cve.org/CVERecord?id=CVE-2019-6111

    Affected packages

    Package

    Name: openssh

    Purl: pkg:deb/ubuntu/openssh@1:6.6p1-2ubuntu2.13?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:6.6p1-2ubuntu2.13

    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