Allocation of Resources Without Limits or Throttling Affecting py3-twisted package, versions <22.2.0-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.67% (80th percentile)

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  • Snyk IDSNYK-ALPINE319-PY3TWISTED-6111096
  • published8 Dec 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 Alpine:3.19 py3-twisted to version 22.2.0-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream py3-twisted package and not the py3-twisted package as distributed by Alpine. See How to fix? for Alpine:3.19 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 Scores

version 3.1