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.
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History
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MITRE
Status: PUBLISHED
Assigner: mitre
Published: 2022-11-09T00:00:00
Updated: 2024-08-03T14:01:31.434Z
Reserved: 2022-11-09T00:00:00
Link: CVE-2022-45061
Vulnrichment
No data.
NVD
Status : Modified
Published: 2022-11-09T07:15:09.887
Modified: 2024-11-21T07:28:42.067
Link: CVE-2022-45061
Redhat