OpenSSH 7.9 Vulnerability: Manipulation of Client Output by Malicious Server

OpenSSH 7.9 Vulnerability: Manipulation of Client Output by Malicious Server

CVE-2019-6110 · MEDIUM Severity

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output from the server, a malicious server (or Man-in-The-Middle attacker) can manipulate the client output, for example to use ANSI control codes to hide additional files being transferred.

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