CVE-2019-6109 Other in n/a

Medium 6.8 Published Updated

A malicious server can manipulate OpenSSH client output using ANSI codes to hide transferred files, bypassing user visibility.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2019-6109?

CVE-2019-6109 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 31 Jan 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client output, e.g., by using ANSI control codes to hide additional files being transferred. This affects refresh_progress_meter() in progressmeter.c.

Weakness: CWE-116

Which versions are affected by CVE-2019-6109?

It affects 20 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Fujitsu M10-1 Firmware, Fujitsu M10-4 Firmware, Fujitsu M10-4s Firmware and 14 more.

How do I fix CVE-2019-6109?

Apply the vendor's patch.

Is CVE-2019-6109 being exploited?

There is no known exploitation of CVE-2019-6109 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as ALPINE-CVE-2019-6109, DEBIAN-CVE-2019-6109, GHSA-2pqm-q853-jfvf, UBUNTU-CVE-2019-6109.

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