USN-5304-1

Kevin Backhouse discovered that PolicyKit incorrectly handled file descriptors. A local attacker could possibly use this issue to cause PolicyKit to crash, resulting in a denial of service.

References

Affected packages

Ubuntu:20.04:LTS / policykit-1

Package

Name: policykit-1
Purl: pkg:deb/ubuntu/policykit-1@0.105-26ubuntu1.3?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.105-26ubuntu1.3

Affected versions

0.*

0.105-26ubuntu1

0.105-26ubuntu1.1

0.105-26ubuntu1.2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "gir1.2-polkit-1.0",
            "binary_version": "0.105-26ubuntu1.3"
        },
        {
            "binary_name": "libpolkit-agent-1-0",
            "binary_version": "0.105-26ubuntu1.3"
        },
        {
            "binary_name": "libpolkit-agent-1-dev",
            "binary_version": "0.105-26ubuntu1.3"
        },
        {
            "binary_name": "libpolkit-gobject-1-0",
            "binary_version": "0.105-26ubuntu1.3"
        },
        {
            "binary_name": "libpolkit-gobject-1-dev",
            "binary_version": "0.105-26ubuntu1.3"
        },
        {
            "binary_name": "policykit-1",
            "binary_version": "0.105-26ubuntu1.3"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5304-1.json"

cves_map

{
    "ecosystem": "Ubuntu:20.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-4115",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}