Improper Encoding or Escaping of Output Affecting openssh package, versions <7.9_p1-r3


Severity

0.0
medium
0
10

    Threat Intelligence

    EPSS
    0.24% (65th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-ALPINE312-OPENSSH-588167
  • published 15 Jan 2019
  • disclosed 31 Jan 2019

How to fix?

Upgrade Alpine:3.12 openssh to version 7.9_p1-r3 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 Alpine. See How to fix? for Alpine:3.12 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
Expand this section

Snyk

6.8 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    Required
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    None
Expand this section

NVD

6.8 medium
Expand this section

SUSE

4.6 medium
Expand this section

Red Hat

3.1 low