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Vulnerability record · CVE-2019-6109 · published 31 January 2019

CVE-2019-6109: Openbsd openssh vulnerability

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.

6.8 CVSS 3.1 Medium EPSS 3.8% · top 10.3% CWE-116 · CWE-116
6.8CVSS 3.1 base score, v2 4.0
3.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
20Affected product versions listed by NVD
26References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

Affected products

20 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00058.html Broken Link
https://access.redhat.com/errata/RHSA-2019:3702 Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf PatchThird Party Advisory
https://cvsweb.openbsd.org/src/usr.bin/ssh/progressmeter.c Release NotesVendor Advisory
https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c Release NotesVendor Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W3YVQ2BPTOVDCFDVNC2GGF5
https://security.gentoo.org/glsa/201903-16 Third Party Advisory
https://security.netapp.com/advisory/ntap-20190213-0001/ Third Party Advisory
https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt Third Party Advisory
https://usn.ubuntu.com/3885-1/ Third Party Advisory
https://www.debian.org/security/2019/dsa-4387 Third Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html PatchThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00058.html Broken Link
https://access.redhat.com/errata/RHSA-2019:3702 Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf PatchThird Party Advisory
https://cvsweb.openbsd.org/src/usr.bin/ssh/progressmeter.c Release NotesVendor Advisory
https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c Release NotesVendor Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W3YVQ2BPTOVDCFDVNC2GGF5
https://security.gentoo.org/glsa/201903-16 Third Party Advisory
https://security.netapp.com/advisory/ntap-20190213-0001/ Third Party Advisory
https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt Third Party Advisory
https://usn.ubuntu.com/3885-1/ Third Party Advisory
https://www.debian.org/security/2019/dsa-4387 Third Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html PatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-6109), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.