CVE-2019-6111
MEDIUM5.9EPSS 54.2%openssh - security update
Published: 1/31/2019Modified: 12/3/2025
Also known as:ALPINE-CVE-2019-6111DEBIAN-CVE-2019-6111
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).
Affected packages (3)
- Alpine/opensshfrom 0, < 7.9_p1-r3
- Debian/opensshfrom 0, < 1:7.9p1-9
- Debian/opensshfrom 0, < 1:7.4p1-10+deb9u6
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |