Medium
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-6109
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:03 UTC · Revision 1
Source evidence
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.
osv:CVE-2019-6109
Complete source record
{
"id": "b5fc7dbf35e508bc57fbfdc21c0636130171f2055728fb419968a3f5a584db42",
"url": "https://osv.dev/vulnerability/CVE-2019-6109",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-6109",
"summary": "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.",
"evidence": "osv:CVE-2019-6109",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2019-6109",
"aliases": [
"CVE-2019-6109"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/openssh/openssh-portable",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "aede1c34243a6f7feae2fb2cb686ade5f9be6f3d"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "7.9"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"V_7_9_P1",
"V_7_8_P1",
"V_7_7_P1",
"V_7_6_P1",
"V_7_5_P1",
"V_7_4_P1",
"V_7_3_P1",
"V_7_2_P1",
"V_7_1_P1",
"V_7_0_P1",
"V_6_9_P1",
"V_6_8_P1",
"V_6_6_P1",
"V_6_5_P1",
"V_6_2_P1",
"V_6_1_P1",
"V_6_0_P1",
"V_5_7_P1",
"V_5_5_P1",
"V_5_2_P1",
"V_5_1_P1",
"V_5_0_P1",
"V_4_2_P1",
"V_3_9_P1",
"V_3_8_P1",
"AFTER_KRB5_GSSAPI_MERGE",
"BEFORE_KRB5_GSSAPI_MERGE",
"POST_KRB4_REMOVAL",
"PRE_KRB4_REMOVAL",
"AFTER_FREEBSD_PAM_MERGE",
"BEFORE_FREEBSD_PAM_MERGE",
"V_3_6_1_P1",
"V_3_4_P1",
"V_3_2_2_P1",
"PRE_SW_KRBV",
"V_3_1_P1",
"V_3_0_1_P1",
"V_3_0_P1",
"V_2_5_2_P1",
"V_2_5_1_P2",
"V_2_5_1_P1",
"V_2_5_0_P1",
"PRE-REORDER",
"V_2_3_0_P1",
"PRE_CYGWIN_MERGE",
"V_2_2_0_P1",
"V_2_1_1_P4",
"V_2_1_1_P3",
"ABOUT_TO_ADD_INET_ATON",
"V_2_1_1_P2",
"V_2_1_1_P1",
"PRE_NEW_LOGIN_CODE",
"V_2_1_0_P3",
"V_2_1_0_P2",
"V_2_1_0_P1",
"V_2_1_0",
"V_2_0_0_BETA2",
"V_2_0_0_BETA1",
"V_2_0_0_TEST1",
"V_1_2_3_TEST3",
"V_1_2_3_TEST2",
"V_1_2_3_TEST1",
"V_1_2_3",
"V_1_2_3_PRE5",
"V_1_2_3_PRE4",
"V_1_2_3_PRE3",
"V_1_2_3_PRE2",
"V_1_2_3_PRE1",
"V_1_2_2_P1",
"V_1_2_2",
"V_1_2_2_PRE29",
"V_1_2_2_PRE28",
"V_1_2_1_PRE27",
"V_1_2_1_PRE26",
"PRE_IPV6",
"V_1_2_1_PRE25",
"V_1_2_1_PRE24",
"V_1_2_1_PRE23",
"V_1_2_1_PRE22",
"PRE_FIXPATHS_INTEGRATION",
"V_1_2_1_PRE21",
"V_1_2_1_PRE20",
"V_1_2_1_PRE19",
"PRE_HPUX_INTEGRATION",
"V_1_2_1_PRE18",
"V_1_2PRE17",
"V_1_2_PRE16",
"V_1_2_PRE15",
"V_1_2_PRE14",
"V_1_2_PRE13",
"V_1_2_PRE12",
"V_1_2_PRE11",
"V_1_2_PRE10",
"V_1_2_PRE9",
"V_1_2_PRE8",
"V_1_2_PRE7",
"V_1_2_PRE6",
"V_1_2_PRE5",
"V_1_2_PRE4",
"PRE_DAN_PATCH_MERGE"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-6109.json"
}
}
],
"modified": "2026-10-24T10:31:02.240016329Z",
"provider": "osv",
"references": [
"https://cert-portal.siemens.com/productcert/html/ssa-398330.html",
"https://cert-portal.siemens.com/productcert/html/ssa-412672.html",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W3YVQ2BPTOVDCFDVNC2GGF5P5ISFG37G/",
"https://access.redhat.com/errata/RHSA-2019:3702",
"https://cvsweb.openbsd.org/src/usr.bin/ssh/progressmeter.c",
"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://www.debian.org/security/2019/dsa-4387",
"https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf",
"https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:fujitsu:m10-1_firmware:*:*:*:*:*:*:*:*"
],
"vendor_product": "fujitsu:m10-1_firmware",
"extracted_events": [
{
"range": [
{
"fixed": "xcp2361"
},
{
"fixed": "xcp3070"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:fujitsu:m10-4_firmware:*:*:*:*:*:*:*:*"
],
"vendor_product": "fujitsu:m10-4_firmware",
"extracted_events": [
{
"range": [
{
"fixed": "xcp2361"
},
{
"fixed": "xcp3070"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:fujitsu:m10-4s_firmware:*:*:*:*:*:*:*:*"
],
"vendor_product": "fujitsu:m10-4s_firmware",
"extracted_events": [
{
"range": [
{
"fixed": "xcp2361"
},
{
"fixed": "xcp3070"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:fujitsu:m12-1_firmware:*:*:*:*:*:*:*:*"
],
"vendor_product": "fujitsu:m12-1_firmware",
"extracted_events": [
{
"range": [
{
"fixed": "xcp2361"
},
{
"fixed": "xcp3070"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:fujitsu:m12-2_firmware:*:*:*:*:*:*:*:*"
],
"vendor_product": "fujitsu:m12-2_firmware",
"extracted_events": [
{
"range": [
{
"fixed": "xcp2361"
},
{
"fixed": "xcp3070"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:fujitsu:m12-2s_firmware:*:*:*:*:*:*:*:*"
],
"vendor_product": "fujitsu:m12-2s_firmware",
"extracted_events": [
{
"range": [
{
"fixed": "xcp2361"
},
{
"fixed": "xcp3070"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:siemens:scalance_x204rna_eec_firmware:*:*:*:*:*:*:*:*"
],
"vendor_product": "siemens:scalance_x204rna_eec_firmware",
"extracted_events": [
{
"range": [
{
"fixed": "3.2.7"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:siemens:scalance_x204rna_firmware:*:*:*:*:*:*:*:*"
],
"vendor_product": "siemens:scalance_x204rna_firmware",
"extracted_events": [
{
"range": [
{
"fixed": "3.2.7"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:a:winscp:winscp:*:*:*:*:*:*:*:*"
],
"vendor_product": "winscp:winscp",
"extracted_events": [
{
"range": [
{
"last_affected": "5.13"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*"
],
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
{
"range": [
{
"introduced": "14.04"
},
{
"last_affected": "14.04"
},
{
"introduced": "16.04"
},
{
"last_affected": "16.04"
},
{
"introduced": "18.04"
},
{
"last_affected": "18.04"
},
{
"introduced": "18.10"
},
{
"last_affected": "18.10"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
},
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "30"
},
{
"last_affected": "30"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux",
"extracted_events": [
{
"range": [
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_eus",
"extracted_events": [
{
"range": [
{
"introduced": "8.1"
},
{
"last_affected": "8.1"
},
{
"introduced": "8.2"
},
{
"last_affected": "8.2"
},
{
"introduced": "8.4"
},
{
"last_affected": "8.4"
},
{
"introduced": "8.6"
},
{
"last_affected": "8.6"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_server_aus:8.6:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server_aus",
"extracted_events": [
{
"range": [
{
"introduced": "8.2"
},
{
"last_affected": "8.2"
},
{
"introduced": "8.4"
},
{
"last_affected": "8.4"
},
{
"introduced": "8.6"
},
{
"last_affected": "8.6"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server_tus",
"extracted_events": [
{
"range": [
{
"introduced": "8.2"
},
{
"last_affected": "8.2"
},
{
"introduced": "8.4"
},
{
"last_affected": "8.4"
},
{
"introduced": "8.6"
},
{
"last_affected": "8.6"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2019-6109",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 439976,
"published_at": "2019-01-31T18:29:00.71+00:00"
}