CVE-2020-36242

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Source
https://nvd.nist.gov/vuln/detail/CVE-2020-36242
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-36242.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-36242
Aliases
Downstream
Related
Published
2021-02-07T20:15:12Z
Modified
2025-10-15T12:19:52.064683Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Git / github.com/pyca/cryptography

Affected ranges

Type
GIT
Repo
https://github.com/pyca/cryptography
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
82b6ce28389f0a317bc55ba2091a74b346db7cae

Affected versions

0.*

0.1
0.2
0.3
0.4
0.5
0.5.1
0.6
0.7
0.8
0.9

1.*

1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9

2.*

2.0
2.1
2.2
2.3
2.4
2.4.1
2.5
2.6
2.6.1
2.7
2.8
2.9

3.*

3.0
3.1
3.2
3.3
3.3.1