Vulnerability Details : CVE-2022-45061

Potential exploit
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.
Published 2022-11-09 07:15:10
Updated 2025-05-01 15:15:58
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Denial of service

Products affected by CVE-2022-45061

Threat overview for CVE-2022-45061

Top countries where our scanners detected CVE-2022-45061
Top open port discovered on systems with this issue 80
IPs affected by CVE-2022-45061 441,008
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2022-45061!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2022-45061

EPSS FAQ
0.08%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 21 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2022-45061

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.5
 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
 134c704f-9b21-4f2e-91b3-4a467353bcc0 2025-05-01
7.5
 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
 NIST
7.5
 HIGH AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A
N/A
 Oracle:CPUOct2023

CWE ids for CVE-2022-45061

  • The product does not properly control the allocation and maintenance of a limited resource.
    Assigned by: nvd@nist.gov (Primary)
  • An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached.
    Assigned by:
    • 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
    • nvd@nist.gov (Primary)

References for CVE-2022-45061

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