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[3.14] gh-119452: Fix a potential virtual memory allocation denial of service in http.server #119455

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Merged
serhiy-storchaka merged 4 commits into from
Dec 1, 2025
Merged

[3.14] gh-119452: Fix a potential virtual memory allocation denial of service in http.server #119455

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0f35918
gh-119452: Fix OOM vulnerability in http.server
serhiy-storchaka May 23, 2024
64620ea
Update the NEWS entry.
serhiy-storchaka Nov 18, 2025
9f06e71
Merge branch '3.14' into http-server
hugovk Nov 30, 2025
e6c3e7b
Address review comments.
serhiy-storchaka Dec 1, 2025
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Update the NEWS entry.
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@serhiy-storchaka
serhiy-storchaka committed Nov 18, 2025
commit 64620ea4a91afb624c8d6907f004f6850067ad38
9 changes: 6 additions & 3 deletions Misc/NEWS.d/next/Security/2024-05-23-11-44-41.gh-issue-119452.PRfsSv.rst
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Fix OOM vulnerability in :mod:`http.server`, when handling the POST request
in the CGI server on Windows could cause consuming an arbitrary amount of
memory.
Fix a potential denial of service in the :mod:`http.server` module.
When a malicious user is connected to the CGI server on Windows, it could cause
an arbitrary amount of memory to be allocated.
In best case this could lead to a :exc:`MemoryError` or other process crash.
In worst case it could lead to swapping which would dramatically slow down the
whole system and make it less responcible.
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