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UBUNTU-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 34...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Ubuntu:Pro:14.04:LTS python2.7

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.6-8ubuntu0.6+esm13"}]}]

Ubuntu:Pro:14.04:LTS python3.5

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.2-2ubuntu0~16.04.4~14.04.1+esm1"}]}]

Ubuntu:Pro:14.04:LTS python3.4

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:Pro:16.04:LTS python2.7

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.12-1ubuntu0~16.04.18+esm3"}]}]

Ubuntu:Pro:16.04:LTS python3.5

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.2-2ubuntu0~16.04.13+esm6"}]}]

Ubuntu:18.04:LTS python2.7

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.17-1~18.04ubuntu1.10"}]}]

Ubuntu:18.04:LTS python3.6

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.9-1~18.04ubuntu1.9"}]}]

Ubuntu:Pro:18.04:LTS python3.7

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.5-2ubuntu1~18.04.2+esm3"}]}]

Ubuntu:Pro:18.04:LTS python3.8

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.8.0-3ubuntu1~18.04.2+esm2"}]}]

Ubuntu:20.04:LTS python3.8

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.8.10-0ubuntu1~20.04.6"}]}]

Ubuntu:Pro:20.04:LTS python2.7

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.18-1~20.04.7+esm4"}]}]

Ubuntu:Pro:20.04:LTS python3.9

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.9.5-3ubuntu0~20.04.1+esm1"}]}]

Ubuntu:22.04:LTS python3.10

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.10.6-1~22.04.2"}]}]

Ubuntu:Pro:22.04:LTS python2.7

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.18-13ubuntu1.5+esm3"}]}]

Ubuntu:Pro:22.04:LTS python3.11

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.11.0~rc1-1~22.04.1~esm1"}]}]

References

advisory ubuntu.com
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report ubuntu.com
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report cve.org