USN-6424-1

It was discovered that kramdown did not restrict Rouge formatters to the correct namespace. An attacker could use this issue to cause kramdown to execute arbitrary code.

References

Affected packages

Ubuntu:20.04:LTS / ruby-kramdown

Package

Name: ruby-kramdown
Purl: pkg:deb/ubuntu/ruby-kramdown@1.17.0-4ubuntu0.2?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.17.0-4ubuntu0.2

Affected versions

1.*

1.17.0-1

1.17.0-2

1.17.0-4

1.17.0-4ubuntu0.1

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "kramdown",
            "binary_version": "1.17.0-4ubuntu0.2"
        },
        {
            "binary_name": "ruby-kramdown",
            "binary_version": "1.17.0-4ubuntu0.2"
        }
    ]
}

Database specific

{
    "cves_map": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "cves": [
            {
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                    },
                    {
                        "type": "Ubuntu",
                        "score": "medium"
                    }
                ],
                "id": "CVE-2021-28834"
            }
        ]
    }
}