CVE-2020-36242

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

Fixed

82b6ce28389f0a317bc55ba2091a74b346db7cae

Database specific

{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.3.2"
        }
    ]
}

Affected versions

0.*

0.1

0.2

0.2.1

0.2.2

0.3

0.4

0.5

0.5.1

0.5.2

0.5.3

0.5.4

0.6

0.6.1

0.7

0.7.1

0.7.2

0.8

0.8.1

0.8.2

0.9

0.9.1

0.9.2

0.9.3

1.*

1.0

1.0.1

1.0.2

1.1

1.1.1

1.1.2

1.2

1.2.1

1.2.2

1.2.3

1.3

1.3.1

1.3.2

1.3.3

1.3.4

1.4

1.5

1.5.1

1.5.2

1.5.3

1.6

1.7

1.7.1

1.7.2

1.8

1.8.1

1.8.2

1.9

2.*

2.0

2.0.1

2.0.2

2.0.3

2.1

2.1.1

2.1.2

2.1.3

2.1.4

2.2

2.2.1

2.2.2

2.3

2.3.1

2.4

2.4.1

2.4.2

2.5

2.6

2.6.1

2.7

2.8

2.9

2.9.1

2.9.2

3.*

3.0

3.1

3.1.1

3.2

3.2.1

3.3

3.3.1

3.4

3.4.1

3.4.2

3.4.3

3.4.4

3.4.5

3.4.6

3.4.7

3.4.8

35.*

35.0.0

36.*

36.0.0

36.0.1

36.0.2

37.*

37.0.0

37.0.1

37.0.2

37.0.3

37.0.4

38.*

38.0.0

38.0.1

38.0.2

38.0.3

38.0.4

39.*

39.0.0

39.0.1

39.0.2

40.*

40.0.0

40.0.1

40.0.2

41.*

41.0.0

41.0.1

41.0.2

41.0.3

41.0.4

41.0.5

41.0.6

41.0.7

42.*

42.0.0

42.0.1

42.0.2

42.0.3

42.0.4

42.0.5

42.0.6

42.0.7

42.0.8

43.*

43.0.0

43.0.1

43.0.2

43.0.3

44.*

44.0.0

44.0.1

44.0.2

44.0.3

45.*

45.0.0

45.0.1

45.0.2

45.0.3

45.0.4

45.0.5

45.0.6

45.0.7

46.*

46.0.0

46.0.1

46.0.2

46.0.3

46.0.4

46.0.5

46.0.6

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-36242.json"

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "33"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "1.10.0"
            }
        ]
    }
]