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Vulnerability of Python: information disclosure via hmac.compare_digest Timing

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via hmac.compare_digest Timing of Python, in order to obtain sensitive information.
Vulnerable products: Python.
Severity of this weakness: 1/4.
Creation date: 30/11/2020.
Références of this bulletin: 40791, VIGILANCE-VUL-34002.

Description of the vulnerability 

An attacker can bypass access restrictions to data via hmac.compare_digest Timing of Python, in order to obtain sensitive information.
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This computer vulnerability announce impacts software or systems such as Python.

Our Vigil@nce team determined that the severity of this cybersecurity bulletin is low.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this threat alert.

Solutions for this threat 

Python: version 3.9.1.
The version 3.9.1 is fixed:
  https://www.python.org/downloads/release/python-391/

Python: version 3.8.7.
The version 3.8.7 is fixed:
  https://www.python.org/downloads/release/python-391/

Python: patch for hmac.compare_digest Timing.
A patch is indicated in information sources.
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