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poplib.py: Missing integer parsing validation causes client crash on invalid server response #130637

Description

@NErinola

Crash report

What happened?

In poplib.py at line 229 the code attempts to convert a server response to an integer without first verifying that the response is numeric. If the server returns a non-numeric response, the int() conversion fails causing the client to crash.

CPython versions tested on:

3.12

Operating systems tested on:

Linux

Output from running 'python -VV' on the command line:

No response

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    stdlibStandard Library Python modules in the Lib/ directorytype-bugAn unexpected behavior, bug, or error

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