USN-5201-1

It was discovered that the Python urllib http client could enter into an infinite loop when incorrectly handling certain server responses (100 Continue response). Specially crafted traffic from a malicious HTTP server could cause a denial of service (Dos) condition for a client.

References

Affected packages

Ubuntu:20.04:LTS / python3.8

Package

Name: python3.8
Purl: pkg:deb/ubuntu/python3.8@3.8.10-0ubuntu1~20.04.2?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

3.8.10-0ubuntu1~20.04.2

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

3.8.10-0ubuntu1~20.04.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "idle-python3.8",
            "binary_version": "3.8.10-0ubuntu1~20.04.2"
        },
        {
            "binary_name": "libpython3.8",
            "binary_version": "3.8.10-0ubuntu1~20.04.2"
        },
        {
            "binary_name": "libpython3.8-dev",
            "binary_version": "3.8.10-0ubuntu1~20.04.2"
        },
        {
            "binary_name": "libpython3.8-minimal",
            "binary_version": "3.8.10-0ubuntu1~20.04.2"
        },
        {
            "binary_name": "libpython3.8-stdlib",
            "binary_version": "3.8.10-0ubuntu1~20.04.2"
        },
        {
            "binary_name": "libpython3.8-testsuite",
            "binary_version": "3.8.10-0ubuntu1~20.04.2"
        },
        {
            "binary_name": "python3.8",
            "binary_version": "3.8.10-0ubuntu1~20.04.2"
        },
        {
            "binary_name": "python3.8-dev",
            "binary_version": "3.8.10-0ubuntu1~20.04.2"
        },
        {
            "binary_name": "python3.8-examples",
            "binary_version": "3.8.10-0ubuntu1~20.04.2"
        },
        {
            "binary_name": "python3.8-full",
            "binary_version": "3.8.10-0ubuntu1~20.04.2"
        },
        {
            "binary_name": "python3.8-minimal",
            "binary_version": "3.8.10-0ubuntu1~20.04.2"
        },
        {
            "binary_name": "python3.8-venv",
            "binary_version": "3.8.10-0ubuntu1~20.04.2"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2021-3737",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:20.04:LTS"
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5201-1.json"

Ubuntu:20.04:LTS / python3.9