Medium
Security advisory
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).
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-6111
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 04:19 UTC · Revision 1
Source evidence
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).
osv:CVE-2019-6111
Complete source record
{
"id": "687f025663078c2582ee6d31b4560e1fdd2a45a8fc036d2ea8de6b1e917dd37a",
"url": "https://osv.dev/vulnerability/CVE-2019-6111",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-6111",
"summary": "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).",
"evidence": "osv:CVE-2019-6111",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2019-6111",
"aliases": [
"CVE-2019-6111"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/apache/mina-sshd",
"type": "GIT",
"events": [
{
"introduced": "1a3da27b8c5667c9b335a8352ba6df5ca75167ba"
},
{
"last_affected": "1a3da27b8c5667c9b335a8352ba6df5ca75167ba"
}
],
"database_specific": {
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{
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"range": [
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},
{
"last_affected": "2.2.0"
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],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
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"sshd-2.2.0"
],
"database_specific": {
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}
},
{
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{
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{
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{
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}
],
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}
],
"versions": [
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"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-2019-6111.json"
}
}
],
"modified": "2026-10-24T10:30:17.138186670Z",
"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.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/",
"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/"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*"
],
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"extracted_events": [
{
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{
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}
],
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}
]
},
{
"cpes": [
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],
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{
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{
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{
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}
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{
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],
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}
],
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}
]
},
{
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],
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{
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"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*"
],
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{
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{
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{
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},
{
"introduced": "18.04"
},
{
"last_affected": "18.04"
},
{
"introduced": "18.10"
},
{
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}
],
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}
]
},
{
"cpes": [
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],
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{
"range": [
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
},
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
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}
]
},
{
"cpes": [
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],
"vendor_product": "fedoraproject:fedora",
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{
"range": [
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},
{
"last_affected": "30"
}
],
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]
},
{
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"cpe:2.3:o:freebsd:freebsd:12.0:p2:*:*:*:*:*:*",
"cpe:2.3:o:freebsd:freebsd:12.0:p3:*:*:*:*:*:*"
],
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{
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{
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{
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},
{
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},
{
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{
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},
{
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}
],
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}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*",
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},
{
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"cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*"
],
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{
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],
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{
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},
{
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},
{
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{
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{
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},
{
"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:*:*:*:*:*:*:*"
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{
"range": [
{
"introduced": "8.2"
},
{
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},
{
"introduced": "8.4"
},
{
"last_affected": "8.4"
},
{
"introduced": "8.6"
},
{
"last_affected": "8.6"
}
],
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}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2019-6111",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 429492,
"published_at": "2019-01-31T18:29:00.867+00:00"
}