Integer Overflow or Wraparound Affecting python-cryptography package, versions *



    Attack Complexity Low
    Confidentiality High
    Availability High

    Threat Intelligence

    EPSS 0.85% (82nd percentile)
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9.1 critical
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7.5 high
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Red Hat
8.2 high

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  • published 8 Feb 2021
  • disclosed 7 Feb 2021

How to fix?

There is no fixed version for Debian:10 python-cryptography.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-cryptography package and not the python-cryptography package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

In the cryptography package before 3.3.2 for Python, certain sequences of update calls to symmetrically encrypt multi-GB values could result in an integer overflow and buffer overflow, as demonstrated by the Fernet class.