USN-4973-2

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Source
https://ubuntu.com/security/notices/USN-4973-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4973-2.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-4973-2
Upstream
Related
Published
2021-10-04T12:04:34.590806Z
Modified
2025-10-13T04:35:30Z
Summary
python3.8 vulnerability
Details

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 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "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",
            "binary_version": "3.8.10-0ubuntu1~20.04.1"
        }
    ]
}

Database specific

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"
}