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).

  - 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). (CVE-2019-6111)

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Detections

Analytics

Siemens SCALANCE X-200RNA Switch Devices Path Traversal (CVE-2019-6111)

medium Tenable OT Security Plugin ID 500898

Version 1.7