Vulnerability Details : CVE-2019-6111
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).
Vulnerability category: Directory traversal
Exploit prediction scoring system (EPSS) score for CVE-2019-6111
Probability of exploitation activity in the next 30 days: 0.18%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 55 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2019-6111
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
5.8
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:P |
8.6
|
4.9
|
[email protected] |
|
5.9
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |
2.2
|
3.6
|
[email protected] |
CWE ids for CVE-2019-6111
-
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.Assigned by: [email protected] (Primary)
References for CVE-2019-6111
-
https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c
Release Notes
-
https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1677794
Exploit;Issue Tracking;Third Party Advisory
-
http://www.securityfocus.com/bid/106741
Broken Link;Third Party Advisory;VDB Entry
-
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
Patch;Third Party Advisory
-
https://security.netapp.com/advisory/ntap-20190213-0001/
Third Party Advisory
-
https://lists.apache.org/thread.html/c45d9bc90700354b58fb7455962873c44229841880dcb64842fa7d23@%3Cdev.mina.apache.org%3E
Mailing List;Third Party Advisory
-
https://www.freebsd.org/security/advisories/FreeBSD-EN-19:10.scp.asc
Third Party Advisory
-
https://security.gentoo.org/glsa/201903-16
Third Party Advisory
-
https://lists.apache.org/thread.html/d540139359de999b0f1c87d05b715be4d7d4bec771e1ae55153c5c7a@%3Cdev.mina.apache.org%3E
Mailing List;Third Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00058.html
Broken Link
-
https://lists.apache.org/thread.html/e47597433b351d6e01a5d68d610b4ba195743def9730e49561e8cf3f@%3Cdev.mina.apache.org%3E
Mailing List;Third Party Advisory
-
https://www.exploit-db.com/exploits/46193/
Exploit;Third Party Advisory;VDB Entry
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/W3YVQ2BPTOVDCFDVNC2GGF5P5ISFG37G/
Mailing List;Third Party Advisory
-
http://www.openwall.com/lists/oss-security/2022/08/02/1
Mailing List;Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2019:3702
Third Party Advisory
-
https://usn.ubuntu.com/3885-2/
Third Party Advisory
-
https://usn.ubuntu.com/3885-1/
Third Party Advisory
-
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
Third Party Advisory
-
http://www.openwall.com/lists/oss-security/2019/04/18/1
Mailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html
Mailing List;Third Party Advisory
-
https://www.debian.org/security/2019/dsa-4387
Third Party Advisory
-
https://lists.apache.org/thread.html/c7301cab36a86825359e1b725fc40304d1df56dc6d107c1fe885148b@%3Cdev.mina.apache.org%3E
Mailing List;Third Party Advisory
Products affected by CVE-2019-6111
- 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: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:a:apache:mina_sshd:2.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:scalance_x204rna_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:scalance_x204rna_eec_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:fujitsu:m10-1_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:fujitsu:m10-1_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:fujitsu:m10-4_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:fujitsu:m10-4_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:fujitsu:m10-4s_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:fujitsu:m10-4s_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:fujitsu:m12-1_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:fujitsu:m12-1_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:fujitsu:m12-2_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:fujitsu:m12-2_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:fujitsu:m12-2s_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:fujitsu:m12-2s_firmware:*:*:*:*:*:*:*:*
- 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:fedoraproject:fedora:30:*:*:*:*:*:*:*