USN-4940-1

It was discovered that PyYAML incorrectly handled untrusted YAML files with the FullLoader loader. A remote attacker could possibly use this issue to execute arbitrary code.

References

Affected packages

Ubuntu:20.04:LTS / pyyaml

Package

Name: pyyaml
Purl: pkg:deb/ubuntu/pyyaml@5.3.1-1ubuntu0.1?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.3.1-1ubuntu0.1

Affected versions

5.*

5.1.2-1

5.1.2-1build1

5.3-1ubuntu1

5.3-1ubuntu2

5.3-1ubuntu3

5.3-2

5.3.1-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "5.3.1-1ubuntu0.1",
            "binary_name": "python-yaml"
        },
        {
            "binary_version": "5.3.1-1ubuntu0.1",
            "binary_name": "python-yaml-dbg"
        },
        {
            "binary_version": "5.3.1-1ubuntu0.1",
            "binary_name": "python3-yaml"
        },
        {
            "binary_version": "5.3.1-1ubuntu0.1",
            "binary_name": "python3-yaml-dbg"
        }
    ],
    "availability": "No subscription required"
}