Allocation of Resources Without Limits or Throttling Affecting python3-twisted+tls package, versions <0:22.4.0-124.amzn2023.0.2


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
3.51% (88th percentile)

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  • Snyk IDSNYK-AMZN2023-PYTHON3TWISTEDTLS-3345459
  • published7 Mar 2023
  • disclosed3 Mar 2022

Introduced: 3 Mar 2022

CVE-2022-21716  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 python3-twisted+tls to version 0:22.4.0-124.amzn2023.0.2 or higher.
This issue was patched in ALAS2023-2023-056.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-twisted+tls package and not the python3-twisted+tls package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0, Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH version identifier. This ends up with a buffer using all the available memory. The attach is a simple as nc -rv localhost 22 &lt; /dev/zero. A patch is available in version 22.2.0. There are currently no known workarounds.

CVSS Base Scores

version 3.1