*** This bug is a security vulnerability ***

Public security bug reported:

Python 3.x through 3.9.1 has a buffer overflow in PyCArg_repr in
_ctypes/callproc.c, which may lead to remote code execution in certain
Python applications that accept floating-point numbers as untrusted
input, as demonstrated by a 1e300 argument to c_double.from_param. This
occurs because sprintf is used unsafely.

See also https://ubuntu.com/security/CVE-2021-3177.

Fixed in 3.6.13.

** Affects: python3.6 (Ubuntu)
     Importance: Undecided
         Status: New

** Information type changed from Private Security to Public Security

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https://bugs.launchpad.net/bugs/1916480

Title:
  CVE-2021-3177: buffer overflow when parsing floats

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