Improper Enforcement of Message Integrity During Transmission in a Communication Channel Affecting runfinch-finch package, versions <0:1.17.1-1.amzn2023.0.2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.2% (11th 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 IDSNYK-AMZN2023-RUNFINCHFINCH-17290438
  • published10 Jun 2026
  • disclosed22 May 2026

Introduced: 22 May 2026

NewCVE-2026-39827  (opens in a new tab)
CWE-924  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 runfinch-finch to version 0:1.17.1-1.amzn2023.0.2 or higher.
This issue was patched in ALAS2023-2026-1809.

NVD Description

Note: Versions mentioned in the description apply only to the upstream runfinch-finch package and not the runfinch-finch package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection's internal state and released for garbage collection.

CVSS Base Scores

version 3.1