CVE-2019-6111
MEDIUM 5.9EPSS 58.2%
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 v3.1
- 5.9 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS v3.1
- 5.9 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS v2.0
- 5.8 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:P - EPSS
- 58.20% chance of exploitation in the next 30 days, 99th percentile
- Published
- 2019-01-31
- Updated
- 2025-12-18