CVE-2019-6109 Other in n/a
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.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as ALPINE-CVE-2019-6109, DEBIAN-CVE-2019-6109, GHSA-2pqm-q853-jfvf, UBUNTU-CVE-2019-6109.