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CVE-2022-45061

Published: Nov 9, 2022Updated: Nov 3, 2025 Sources: CVE List NVD BDU csafCWE-407
NVD MITRE
7.5CVSSHIGH
EPSS Score
2.5%
Top 17.7%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-407

Affected Products

n/an/a
pythonpythonOSS Libraries
fedorafedoraproject
On-premOS
Operating Systems / linux-distro
active iq unified managernetappHardware Firmware
e-series performance analyzernetappHardware Firmware
pythonoss-projectUSOSS Libraries
fedoraprojectoss-projectUSOperating Systemsaka fedora project
netappcommercialUSHardware Firmware
and 12 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/python/cpython/issues/98433
github.com
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O67LRHDTJWH544KXB6KY4HMHQLYDXFPK/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4WBZJNSALFGMPYTINIF57HAAK46U72WQ/
lists.fedoraproject.org
and 63 more references View all →

Timeline

Published
Nov 9, 2022
Last Updated
Nov 3, 2025

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