USN-4973-2

USN-4973-1 fixed this vulnerability previously, but it was re-introduced in python3.8 in focal because of the SRU in LP: #1928057. This update fixes the problem.

Original advisory details:

It was discovered that the Python stdlib ipaddress API incorrectly handled octal strings. A remote attacker could possibly use this issue to perform a wide variety of attacks, including bypassing certain access restrictions.

References

Affected packages

Ubuntu:20.04:LTS / python3.8

Package

Name: python3.8
Purl: pkg:deb/ubuntu/python3.8@3.8.10-0ubuntu1~20.04.1?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

3.8.10-0ubuntu1~20.04.1

Affected versions

3.*

3.8.0-1

3.8.0-2

3.8.0-3

3.8.0-4

3.8.0-5

3.8.1-2ubuntu3

3.8.2~rc1-1ubuntu1

3.8.2-1

3.8.2-1ubuntu1

3.8.2-1ubuntu1.1

3.8.2-1ubuntu1.2

3.8.5-1~20.04

3.8.5-1~20.04.2

3.8.5-1~20.04.3

3.8.10-0ubuntu1~20.04

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "3.8.10-0ubuntu1~20.04.1",
            "binary_name": "idle-python3.8"
        },
        {
            "binary_version": "3.8.10-0ubuntu1~20.04.1",
            "binary_name": "libpython3.8"
        },
        {
            "binary_version": "3.8.10-0ubuntu1~20.04.1",
            "binary_name": "libpython3.8-dev"
        },
        {
            "binary_version": "3.8.10-0ubuntu1~20.04.1",
            "binary_name": "libpython3.8-minimal"
        },
        {
            "binary_version": "3.8.10-0ubuntu1~20.04.1",
            "binary_name": "libpython3.8-stdlib"
        },
        {
            "binary_version": "3.8.10-0ubuntu1~20.04.1",
            "binary_name": "libpython3.8-testsuite"
        },
        {
            "binary_version": "3.8.10-0ubuntu1~20.04.1",
            "binary_name": "python3.8"
        },
        {
            "binary_version": "3.8.10-0ubuntu1~20.04.1",
            "binary_name": "python3.8-dev"
        },
        {
            "binary_version": "3.8.10-0ubuntu1~20.04.1",
            "binary_name": "python3.8-examples"
        },
        {
            "binary_version": "3.8.10-0ubuntu1~20.04.1",
            "binary_name": "python3.8-full"
        },
        {
            "binary_version": "3.8.10-0ubuntu1~20.04.1",
            "binary_name": "python3.8-minimal"
        },
        {
            "binary_version": "3.8.10-0ubuntu1~20.04.1",
            "binary_name": "python3.8-venv"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4973-2.json"

cves_map

{
    "cves": [
        {
            "id": "CVE-2021-29921",
            "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"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:20.04:LTS"
}