Homepage
About Snyk

CVE-2018-10896 Affecting cloud-init package, versions <0:19.3-4.amzn2

Severity

 Recommended
0.0
medium
0
10

Based on Amazon Linux security rating

    Threat Intelligence

    EPSS
    0.05% (22nd 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-AMZN2-CLOUDINIT-1692345
  • published 27 Sep 2021
  • disclosed 1 Aug 2018
Report a new vulnerability Found a mistake?

Introduced: 1 Aug 2018

CVE-2018-10896 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2 cloud-init to version 0:19.3-4.amzn2 or higher.
This issue was patched in ALAS2-2021-1576.

NVD Description

Note: Versions mentioned in the description apply only to the upstream cloud-init package and not the cloud-init package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

The default cloud-init configuration, in cloud-init 0.6.2 and newer, included "ssh_deletekeys: 0", disabling cloud-init's deletion of ssh host keys. In some environments, this could lead to instances created by cloning a golden master or template system, sharing ssh host keys, and being able to impersonate one another or conduct man-in-the-middle attacks.

CVSS Scores

version 3.1
Expand this section

NVD

7.1 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    None