CVE-2020-36242

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Source
https://nvd.nist.gov/vuln/detail/CVE-2020-36242
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-36242.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2020-36242
Aliases
Related
Published
2021-02-07T20:15:12Z
Modified
2024-09-18T03:11:06.799154Z
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

Alpine:v3.13 / py3-cryptography

Package

Name
py3-cryptography
Purl
pkg:apk/alpine/py3-cryptography?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.3.2-r0

Affected versions

0.*

0.6.1-r0
0.8.2-r0

1.*

1.0.2-r0
1.3.1-r0
1.3.2-r0
1.4-r0
1.4-r1
1.4-r2
1.5.2-r0
1.5.2-r1
1.5.3-r0
1.7.2-r0
1.7.2-r1
1.8.1-r0
1.8.1-r1
1.9-r0

2.*

2.0.2-r0
2.0.3-r0
2.0.3-r1
2.1.3-r0
2.1.4-r0
2.1.4-r1
2.2.2-r0
2.3.1-r0
2.3.1-r1
2.4.2-r0
2.4.2-r1
2.4.2-r2
2.5-r0
2.6.1-r0
2.6.1-r1
2.7-r0
2.7-r1
2.8-r0
2.8-r1
2.9-r0
2.9.2-r0

3.*

3.2.1-r0
3.3-r0
3.3.1-r0

Debian:11 / python-cryptography

Package

Name
python-cryptography
Purl
pkg:deb/debian/python-cryptography?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.3.2-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / python-cryptography

Package

Name
python-cryptography
Purl
pkg:deb/debian/python-cryptography?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.3.2-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / python-cryptography

Package

Name
python-cryptography
Purl
pkg:deb/debian/python-cryptography?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.3.2-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

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