USN-4570-1

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Source
https://ubuntu.com/security/notices/USN-4570-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4570-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4570-1
Upstream
Related
Published
2020-10-05T17:04:30.866302Z
Modified
2025-10-13T04:35:15Z
Summary
python-urllib3 vulnerability
Details

It was discovered that urllib3 incorrectly handled certain character sequences. A remote attacker could possibly use this issue to perform CRLF injection.

References

Affected packages

Ubuntu:16.04:LTS / python-urllib3

Package

Name
python-urllib3
Purl
pkg:deb/ubuntu/python-urllib3@1.13.1-2ubuntu0.16.04.4?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.13.1-2ubuntu0.16.04.4

Affected versions

1.*

1.11-1
1.12-1
1.13.1-1
1.13.1-2
1.13.1-2ubuntu0.16.04.1
1.13.1-2ubuntu0.16.04.2
1.13.1-2ubuntu0.16.04.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.13.1-2ubuntu0.16.04.4",
            "binary_name": "python-urllib3"
        },
        {
            "binary_version": "1.13.1-2ubuntu0.16.04.4",
            "binary_name": "python3-urllib3"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:16.04:LTS",
    "cves": [
        {
            "id": "CVE-2020-26137",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:18.04:LTS / python-urllib3

Package

Name
python-urllib3
Purl
pkg:deb/ubuntu/python-urllib3@1.22-1ubuntu0.18.04.2?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.22-1ubuntu0.18.04.2

Affected versions

1.*

1.21.1-1
1.22-1
1.22-1ubuntu0.18.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.22-1ubuntu0.18.04.2",
            "binary_name": "python-urllib3"
        },
        {
            "binary_version": "1.22-1ubuntu0.18.04.2",
            "binary_name": "python3-urllib3"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:18.04:LTS",
    "cves": [
        {
            "id": "CVE-2020-26137",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:20.04:LTS / python-urllib3

Package

Name
python-urllib3
Purl
pkg:deb/ubuntu/python-urllib3@1.25.8-2ubuntu0.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.25.8-2ubuntu0.1

Affected versions

1.*

1.24.1-1ubuntu1
1.24.1-1ubuntu2
1.25.8-1
1.25.8-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.25.8-2ubuntu0.1",
            "binary_name": "python3-urllib3"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:20.04:LTS",
    "cves": [
        {
            "id": "CVE-2020-26137",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}