UBUNTU-CVE-2021-33503

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Source
https://ubuntu.com/security/CVE-2021-33503
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33503.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-33503
Related
Published
2021-06-29T11:15:00Z
Modified
2021-06-29T11:15:00Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in the authority component, the authority regular expression exhibits catastrophic backtracking, causing a denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect.

References

Affected packages

Ubuntu:20.04:LTS / python-pip

Package

Name
python-pip
Purl
pkg:deb/ubuntu/python-pip?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
20.0.2-5ubuntu1.7

Affected versions

18.*

18.1-5
18.1-5build1
18.1-5ubuntu1

20.*

20.0.2-2
20.0.2-4
20.0.2-5
20.0.2-5ubuntu1
20.0.2-5ubuntu1.1
20.0.2-5ubuntu1.3
20.0.2-5ubuntu1.4
20.0.2-5ubuntu1.5
20.0.2-5ubuntu1.6

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "20.0.2-5ubuntu1.7",
            "binary_name": "python-pip-whl"
        },
        {
            "binary_version": "20.0.2-5ubuntu1.7",
            "binary_name": "python3-pip"
        }
    ]
}

Ubuntu:20.04:LTS / python-urllib3

Package

Name
python-urllib3
Purl
pkg:deb/ubuntu/python-urllib3?arch=src?distro=focal

Affected ranges

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

Affected versions

1.*

1.24.1-1ubuntu1
1.24.1-1ubuntu2
1.25.8-1
1.25.8-2
1.25.8-2ubuntu0.1

Ecosystem specific 

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

Ubuntu:22.04:LTS / python-pip

Package

Name
python-pip
Purl
pkg:deb/ubuntu/python-pip?arch=src?distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
20.3.4-4

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "20.3.4-4",
            "binary_name": "python-pip-whl"
        },
        {
            "binary_version": "20.3.4-4",
            "binary_name": "python3-pip"
        }
    ]
}

Ubuntu:22.04:LTS / python-urllib3

Package

Name
python-urllib3
Purl
pkg:deb/ubuntu/python-urllib3?arch=src?distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.26.5-1~exp1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "1.26.5-1~exp1",
            "binary_name": "python3-urllib3"
        }
    ]
}