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gh-119452: Fix OOM vulnerability in http.server#119455
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The CGI server on Windows could consume the amount of memory specifiedin the Content-Length header of the request even if the client does notsend such much data. Now it reads the POST request body by chunks,therefore the momory consumption is proportional to the amont of sentdata.
I've marked this Draft for now as discussion on this on the security response team list is not complete. (we'll summarize that in a public issue once it has settled) |
See#119514 (comment) for results of the PSRT discussion. |
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needs backport to 3.9only security fixes needs backport to 3.10only security fixes needs backport to 3.11only security fixes needs backport to 3.12only security fixes needs backport to 3.13bugs and security fixes needs backport to 3.14bugs and security fixes type-securityA security issue
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The CGI server on Windows could consume the amount of memory specified in the Content-Length header of the request even if the client does not send such much data. Now it reads the POST request body by chunks, therefore the memory consumption is proportional to the amount of sent data.