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Algorithmic Complexity Affecting python3 package, versions <3.9.16-r0

0.0
high

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.4% (74th percentile)
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NVD
7.5 high
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SUSE
6.5 medium
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Red Hat
7.5 high

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  • Snyk ID SNYK-ALPINE315-PYTHON3-3167182
  • published 10 Dec 2022
  • disclosed 9 Nov 2022
Report a new vulnerability Found a mistake?

Introduced: 9 Nov 2022

CVE-2022-45061 Open this link in a new tab
CWE-407 Open this link in a new tab

How to fix?

Upgrade Alpine:3.15 python3 to version 3.9.16-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3 package and not the python3 package as distributed by Alpine. See How to fix? for Alpine:3.15 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