CVE-2022-45061

Source
https://nvd.nist.gov/vuln/detail/CVE-2022-45061
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-45061.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-45061
Aliases
Downstream
Related
Published
2022-11-09T07:15:09Z
Modified
2025-10-08T05:19:45.302395Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

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

Affected packages

Git / github.com/python/cpython

Affected versions

v3.*

v3.10.0
v3.10.1
v3.10.2
v3.10.3
v3.10.4
v3.10.5
v3.10.6
v3.10.7
v3.10.8
v3.9.0
v3.9.1
v3.9.10
v3.9.11
v3.9.12
v3.9.13
v3.9.14
v3.9.15
v3.9.1rc1
v3.9.2
v3.9.2rc1
v3.9.3
v3.9.4
v3.9.5
v3.9.6
v3.9.7
v3.9.8
v3.9.9