Resource Exhaustion Affecting python3-tools package, versions <0:3.7.16-1.amzn2.0.1


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.78% (82nd percentile)

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  • Snyk IDSNYK-AMZN2-PYTHON3TOOLS-3244030
  • published21 Jan 2023
  • disclosed9 Nov 2022

Introduced: 9 Nov 2022

CVE-2022-45061  (opens in a new tab)
CWE-400  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade Amazon-Linux:2 python3-tools to version 0:3.7.16-1.amzn2.0.1 or higher.
This issue was patched in ALAS2-2023-1917.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-tools package and not the python3-tools package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

An issue was discovered in Python before 3.11.1. An unnecessary quadratic algorithm exists in one path when processing some inputs to the IDNA (RFC 3490) decoder, such that a crafted, unreasonably long name being presented to the decoder could lead to a CPU denial of service. Hostnames are often supplied by remote servers that could be controlled by a malicious actor; in such a scenario, they could trigger excessive CPU consumption on the client attempting to make use of an attacker-supplied supposed hostname. For example, the attack payload could be placed in the Location header of an HTTP response with status code 302. A fix is planned in 3.11.1, 3.10.9, 3.9.16, 3.8.16, and 3.7.16.

References

CVSS Scores

version 3.1