CVE-2019-6109: Canonical Ubuntu Linux

Medium severity, CVSS 6.8. EPSS: 3.8% chance of exploitation in the next 30 days.

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 products

Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only; version 18.10 only
Debian Debian Linux: version 8.0 only; version 9.0 only
Fedoraproject Fedora: version 30 only
Fujitsu m10-1 Firmware: before xcp2361 (fixed in xcp2361); before xcp3070 (fixed in xcp3070)
Fujitsu m10-4 Firmware: before xcp2361 (fixed in xcp2361); before xcp3070 (fixed in xcp3070)
Fujitsu m10-4s Firmware: before xcp2361 (fixed in xcp2361); before xcp3070 (fixed in xcp3070)
Fujitsu m12-1 Firmware: before xcp2361 (fixed in xcp2361); before xcp3070 (fixed in xcp3070)
Fujitsu m12-2 Firmware: before xcp2361 (fixed in xcp2361); before xcp3070 (fixed in xcp3070)
Fujitsu m12-2s Firmware: before xcp2361 (fixed in xcp2361); before xcp3070 (fixed in xcp3070)
Netapp Element Software: affected versions not specified
Netapp Ontap Select Deploy: affected versions not specified
Netapp Storage Automation Store: affected versions not specified
OpenBSD OpenSSH: up to and including 7.9
Red Hat Enterprise Linux: version 8.0 only
Red Hat Enterprise Linux Eus: version 8.1 only; version 8.2 only; version 8.4 only; version 8.6 only
Red Hat Enterprise Linux Server Aus: version 8.2 only; version 8.4 only; version 8.6 only
Red Hat Enterprise Linux Server Tus: version 8.2 only; version 8.4 only; version 8.6 only
Siemens Scalance x204rna Eec Firmware: before 3.2.7 (fixed in 3.2.7)
Siemens Scalance x204rna Firmware: before 3.2.7 (fixed in 3.2.7)
Winscp Winscp: up to and including 5.13

Published 2019-01-31. Last modified 2026-06-17.