CVE-2019-6111

CVE Details

Release Date:2019-01-31

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).

See more information about CVE-2019-6111 from MITRE CVE dictionary and NIST NVD


CVSS v3.0 metrics


NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score: 5.9 Base Metrics: AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Access Vector: Network Attack Complexity: High
Privileges Required: None User Interaction: None
Scope: Unchanged Confidentiality Impact: None
Integrity Impact: High Availability Impact: None

Errata information


PlatformErrataRelease Date
Oracle Linux version 8 (openssh)ELSA-2019-37022019-11-14



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