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...
- Published
- Jan 31, 2019
- Updated
- Oct 14, 2026
- Assigning CNA
- mitre
- Evidence observed
- Jan 11, 2019
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:NHigh · next 30 days
- Percentile
- 99.1%
- Model date
- Oct 17, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
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).
Sources
- MAL-008PoC
Case Study: SSHtranger Things (CVE-2019-6111, CVE-2019-6110) in Cisco SD-WAN
Mark E. Haase · multiple · Jan 18, 2019
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