USN-4613-1

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Source
https://ubuntu.com/security/notices/USN-4613-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4613-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4613-1
Upstream
Related
Published
2020-11-03T12:17:34.226982Z
Modified
2025-09-08T16:36:52Z
Summary
python-cryptography vulnerability
Details

Hubert Kario discovered that python-cryptography incorrectly handled certain decryption. An attacker could possibly use this issue to expose sensitive information.

References

Affected packages

Ubuntu:16.04:LTS / python-cryptography

Package

Name
python-cryptography
Purl
pkg:deb/ubuntu/python-cryptography@1.2.3-1ubuntu0.3?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.2.3-1ubuntu0.3

Affected versions

1.*

1.0.1-1ubuntu1
1.0.2-1
1.1-1
1.1.1-1
1.1.1-1ubuntu1
1.1.1-1ubuntu2
1.1.1-1ubuntu3
1.2.2-2
1.2.3-1
1.2.3-1ubuntu0.1
1.2.3-1ubuntu0.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-cryptography",
            "binary_version": "1.2.3-1ubuntu0.3"
        },
        {
            "binary_name": "python3-cryptography",
            "binary_version": "1.2.3-1ubuntu0.3"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:18.04:LTS / python-cryptography

Package

Name
python-cryptography
Purl
pkg:deb/ubuntu/python-cryptography@2.1.4-1ubuntu1.4?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.1.4-1ubuntu1.4

Affected versions

1.*

1.9-1

2.*

2.1.3-3
2.1.4-1
2.1.4-1build1
2.1.4-1build2
2.1.4-1ubuntu1
2.1.4-1ubuntu1.1
2.1.4-1ubuntu1.2
2.1.4-1ubuntu1.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-cryptography",
            "binary_version": "2.1.4-1ubuntu1.4"
        },
        {
            "binary_name": "python3-cryptography",
            "binary_version": "2.1.4-1ubuntu1.4"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:20.04:LTS / python-cryptography

Package

Name
python-cryptography
Purl
pkg:deb/ubuntu/python-cryptography@2.8-3ubuntu0.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.8-3ubuntu0.1

Affected versions

2.*

2.6.1-3.1
2.6.1-4
2.6.1-4ubuntu1
2.8-1ubuntu2
2.8-2
2.8-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-cryptography",
            "binary_version": "2.8-3ubuntu0.1"
        },
        {
            "binary_name": "python3-cryptography",
            "binary_version": "2.8-3ubuntu0.1"
        }
    ],
    "availability": "No subscription required"
}