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CVE-2019-6111

Published: Jan 31, 2019Updated: Dec 18, 2025 Sources: CVE List NVD BDU csafCWE-22
NVD MITRE
5.9CVSSMEDIUM
EPSS Score
58.2%
Top 1.0%
CISA KEV
Not in KEV
Exploits
3 Known
Remediation
Patch Available

Description

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).

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:NI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-22

Affected Products

opensshopenbsd
LibraryLibrary
OSS Libraries / generic-library
winscpwinscp
On-prem
Consumer Software / file-utility
ubuntu linuxcanonical
On-premOS
Operating Systems / linux-distro
debian linuxdebian
On-premOS
Operating Systems / linux-distro
enterprise linuxredhat
On-premOS
Operating Systems / linux-distro
openbsdoss-projectCAOperating Systemsaka openbsd
winscpcommercialConsumer Softwareaka winscp, win scp
canonicalcommercialGBOperating Systemsaka canonical ltd.
debianoss-projectGBOperating Systemsaka debian gnu/linux
redhatcommercialUSOperating Systemsaka red hat
and 36 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

3 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00058.html
lists.opensuse.org
http://www.openwall.com/lists/oss-security/2019/04/18/1
openwall.com
http://www.openwall.com/lists/oss-security/2022/08/02/1
openwall.com
and 43 more references View all →

Timeline

Published
Jan 31, 2019
Last Updated
Dec 18, 2025

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