CVE-2017-15906

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    CVE-2017-15906

    Published: 26 Oct 2017Last Modified: 8 Jul 2026

    Summary:

    Details: The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files.

    References: https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf, http://www.securityfocus.com/bid/101552, https://access.redhat.com/errata/RHSA-2018:0980, https://github.com/openbsd/src/commit/a6981567e8e215acc1ef690c8dbb30f2d9b00a19, https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html, https://security.gentoo.org/glsa/201801-05, https://security.netapp.com/advisory/ntap-20180423-0004/, https://www.openssh.com/txt/release-7.6, https://www.oracle.com/security-alerts/cpujan2020.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -a6981567e8e215acc1ef690c8dbb30f2d9b00a19

    Affected versions

    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