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F5 Networks: K000134706: Python IDNA vulnerability CVE-2022-45061

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F5 Networks: K000134706: Python IDNA vulnerability CVE-2022-45061

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
11/09/2022
Created
12/08/2023
Added
12/07/2023
Modified
12/07/2023

Description

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.

Solution(s)

  • f5-big-ip-upgrade-latest

References

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