Improper Encoding or Escaping of Output Affecting openssh package, versions <1:7.9p1-6


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.19% (58th percentile)

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  • Snyk IDSNYK-UBUNTU2004-OPENSSH-580699
  • published15 Jan 2019
  • disclosed31 Jan 2019

Introduced: 15 Jan 2019

CVE-2019-6109  (opens in a new tab)
CWE-116  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 openssh to version 1:7.9p1-6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssh package and not the openssh package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

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.

CVSS Scores

version 3.1