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Algorithmic Complexity Affecting python2.7 package, versions <2.7.16-2+deb10u2

0.0
high

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.47% (76th 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-DEBIAN10-PYTHON27-5423202
  • published 9 Nov 2022
  • disclosed 9 Nov 2022
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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 Debian:10 python2.7 to version 2.7.16-2+deb10u2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python2.7 package and not the python2.7 package as distributed by Debian. See How to fix? for Debian:10 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