CVE-2019-6111

5.9 medium exploit ×4 SSVC exploitation: poc Modified

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).

Fix

Public exploits 4

SCP Client - Multiple Vulnerabilities (SSHtranger Things) (remote · multiple) Exploit-DB · 2019-01-18
OpenSSH SCP Client - Write Arbitrary Files (remote · multiple) Exploit-DB · 2019-01-11
53n7hu/SNP PoC on GitHub
mbadanoiu/MAL-008 PoC on GitHub

Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.

Patch, vendor advisory and mitigation references on NVD 2

https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html Patch, Third Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html Patch, Third Party Advisory

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

2026-10-15 00:45First seenCVSS 5.9 · openbsd, winscp, canonicalNVD modified 2026-10-14 07:16

Affected (CPE criteria) 35

cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*
cpe:2.3:a:winscp:winscp:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
cpe:2.3:a:apache:mina_sshd:2.2.0:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.0:-:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.0:p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.0:p2:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.0:p3:*:*:*:*:*:*
cpe:2.3:o:fujitsu:m10-1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:m10-4_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:m10-4s_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:m12-1_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:m12-2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:fujitsu:m12-2s_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_x204rna_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_x204rna_eec_firmware:*:*:*:*:*:*:*:*

References 48

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00058.html Broken Link
http://www.openwall.com/lists/oss-security/2019/04/18/1 Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/08/02/1 Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/106741 Broken Link, Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:3702 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1677794 Exploit, Issue Tracking, Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf Third Party Advisory
https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c Release Notes
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.debian.org/debian-lts-announce/2019/03/msg00030.html Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W3YVQ2BPTOVDCFDVNC2GGF5P5ISFG37G/
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://usn.ubuntu.com/3885-2/ Third Party Advisory
https://www.debian.org/security/2019/dsa-4387 Third Party Advisory
https://www.exploit-db.com/exploits/46193/ Exploit, Third Party Advisory, VDB Entry
https://www.freebsd.org/security/advisories/FreeBSD-EN-19:10.scp.asc Third Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html Patch, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00058.html Broken Link
http://www.openwall.com/lists/oss-security/2019/04/18/1 Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/08/02/1 Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/106741 Broken Link, Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:3702 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1677794 Exploit, Issue Tracking, Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf Third Party Advisory
https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c Release Notes
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.debian.org/debian-lts-announce/2019/03/msg00030.html Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W3YVQ2BPTOVDCFDVNC2GGF5P5ISFG37G/
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://usn.ubuntu.com/3885-2/ Third Party Advisory
https://www.debian.org/security/2019/dsa-4387 Third Party Advisory
https://www.exploit-db.com/exploits/46193/ Exploit, Third Party Advisory, VDB Entry
https://www.freebsd.org/security/advisories/FreeBSD-EN-19:10.scp.asc Third Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html Patch, Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
https://cert-portal.siemens.com/productcert/html/ssa-412672.html