cbcvebase.
CVE-2022-45061
published 2022-11-09

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)…

PriorityP342high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
2.45%
82.6th percentile
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.

Affected

15 ranges
VendorProductVersion rangeFixed in
debianpypy3< pypy3 7.3.11+dfsg-1 (bookworm)pypy3 7.3.11+dfsg-1 (bookworm)
debianpython2.7< pypy3 7.3.11+dfsg-1 (bookworm)pypy3 7.3.11+dfsg-1 (bookworm)
debianpython3.11< pypy3 7.3.11+dfsg-1 (bookworm)pypy3 7.3.11+dfsg-1 (bookworm)
debianpython3.9< pypy3 7.3.11+dfsg-1 (bookworm)pypy3 7.3.11+dfsg-1 (bookworm)
fedoraprojectfedora
fedoraprojectfedora
fedoraprojectfedora
msrccbl2_python3_3.9.14-5_on_cbl_mariner_2.0
msrccm1_python2_2.7.18-14_on_cbl_mariner_1.0
msrccm1_python3_3.7.16-1_on_cbl_mariner_1.0
pythonpython<= 3.7.15
pythonpython
pythonpython3.10.0 – 3.10.8
pythonpython3.8.0 – 3.8.15
pythonpython3.9.0 – 3.9.15

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
osv9.8CRITICAL
vendor_ubuntu9.8CRITICAL
vendor_debian7.5HIGH
vendor_msrc7.5HIGH
vendor_oracle7.5HIGH
vendor_redhat7.5HIGH
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