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

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

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2020-14343",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:20.04:LTS"
}