USN-3138-1

Markus Döring discovered that python-cryptography incorrectly handled certain HKDF lengths. This could result in python-cryptography returning an empty string instead of the expected derived key.

References

Affected packages

Ubuntu:16.04:LTS / python-cryptography

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.2.3-1ubuntu0.1

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

Ecosystem specific

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