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asyncio SSL server can be DOSed, event loop gets blocked: busy loops and uses 100% CPU #88202

Closed as not planned
@SomberNight

Description

@SomberNight
BPO 44036
Nosy @tiran, @asvetlov, @1st1, @kyuupichan, @SomberNight

Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.

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GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2021-05-04.17:19:04.756>
labels = ['type-security', '3.7', '3.8', '3.9', 'expert-asyncio']
title = 'asyncio SSL server can be DOSed, event loop gets blocked: busy loops and uses 100% CPU'
updated_at = <Date 2022-03-25.12:26:42.095>
user = 'https://github.com/SomberNight'

bugs.python.org fields:

activity = <Date 2022-03-25.12:26:42.095>
actor = 'asvetlov'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['asyncio']
creation = <Date 2021-05-04.17:19:04.756>
creator = 'ghost43'
dependencies = []
files = []
hgrepos = []
issue_num = 44036
keywords = []
message_count = 2.0
messages = ['392923', '415997']
nosy_count = 5.0
nosy_names = ['christian.heimes', 'asvetlov', 'yselivanov', 'kyuupichan', 'ghost43']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'security'
url = 'https://bugs.python.org/issue44036'
versions = ['Python 3.7', 'Python 3.8', 'Python 3.9']

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