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CVE-2022-45061

HIGHCVSS 7.5/10EPSS 2.45%

Last modified

CVE-2022-45061 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 2.45% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
2.45%

82.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
PythonPython<= 3.7.15
PythonPython>= 3.8.0, <= 3.8.15
PythonPython>= 3.9.0, <= 3.9.15
PythonPython>= 3.10.0, <= 3.10.8
PythonPython3.11.0
FedoraprojectFedora35
FedoraprojectFedora36
FedoraprojectFedora37
NetappActive Iq Unified ManagerAll versions
NetappE-Series Performance AnalyzerAll versions
NetappElement SoftwareAll versions
NetappHciAll versions
NetappManagement Services For Element SoftwareAll versions
NetappOntap Select Deploy Administration UtilityAll versions
NetappBootstrap OsAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2022-45061?
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.
How severe is CVE-2022-45061?
CVE-2022-45061 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.45% probability of exploitation in the next 30 days.
How do I fix CVE-2022-45061?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST