CVE-2019-6111

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    CVE-2019-6111

    Published: 31 Jan 2019Last Modified: 8 Jul 2026

    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: http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00058.html, https://lists.apache.org/thread.html/c45d9bc90700354b58fb7455962873c44229841880dcb64842fa7d23%40%3Cdev.mina.apache.org%3E, https://lists.apache.org/thread.html/c7301cab36a86825359e1b725fc40304d1df56dc6d107c1fe885148b%40%3Cdev.mina.apache.org%3E, https://lists.apache.org/thread.html/d540139359de999b0f1c87d05b715be4d7d4bec771e1ae55153c5c7a%40%3Cdev.mina.apache.org%3E, https://lists.apache.org/thread.html/e47597433b351d6e01a5d68d610b4ba195743def9730e49561e8cf3f%40%3Cdev.mina.apache.org%3E, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W3YVQ2BPTOVDCFDVNC2GGF5P5ISFG37G/, http://www.openwall.com/lists/oss-security/2019/04/18/1, http://www.openwall.com/lists/oss-security/2022/08/02/1, http://www.securityfocus.com/bid/106741, https://access.redhat.com/errata/RHSA-2019:3702, https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf, https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c, https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html, https://security.gentoo.org/glsa/201903-16, https://security.netapp.com/advisory/ntap-20190213-0001/, https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt, https://usn.ubuntu.com/3885-1/, https://usn.ubuntu.com/3885-2/, https://www.debian.org/security/2019/dsa-4387, https://www.freebsd.org/security/advisories/FreeBSD-EN-19:10.scp.asc, https://bugzilla.redhat.com/show_bug.cgi?id=1677794, https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html, https://www.exploit-db.com/exploits/46193/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 1a3da27b8c5667c9b335a8352ba6df5ca75167ba
    Fixed -None

    Affected versions

    2.2.0

    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