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Findings

CVE-2019-6109

An issue was discovered in OpenSSH 7.9.

Published Jan 31, 2019 · updated Oct 14, 2026 · openbsd openssh

An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client output, e.g., by using ANSI control codes to hide additional files being transferred. This affects refresh_progress_meter() in progressmeter.c.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 31, 2019 · NIST NVD

    Detected

    An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client output, e.g., by using ANSI control codes to hide additional files being transferred. This affects refresh_progress_meter() in progressmeter.c.

  2. Oct 14, 2026 · NIST NVD

    Updated

    An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client output, e.g., by using ANSI control codes to hide additional files being transferred. This affects refresh_progress_meter() in progressmeter.c.

Affected

  • cpe canonical/ubuntu linux14.04
  • cpe canonical/ubuntu linux16.04
  • cpe canonical/ubuntu linux18.04
  • cpe canonical/ubuntu linux18.10
  • cpe debian/debian linux8.0
  • cpe debian/debian linux9.0
  • cpe fedoraproject/fedora30
  • cpe netapp/element softwareversion unspecified
  • cpe openbsd/opensshversion unspecified
  • cpe redhat/enterprise linux8.0
  • cpe siemens/scalance x204rna firmwareversion unspecified
  • cpe winscp/winscpversion unspecified

Sources

  • NIST NVDCVE-2019-6109

    An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client output, e.g., by using ANSI control codes to hide additional files being

    nvd.nist.gov

References