USN-5066-1

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Source
https://ubuntu.com/security/notices/USN-5066-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5066-1.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-5066-1
Upstream
Related
Published
2021-09-08T11:28:31.269074Z
Modified
2025-10-13T04:35:36Z
Summary
python-pysaml2 vulnerability
Details

Brian Wolff discovered that PySAML2 incorrectly validated cryptographic signatures. A remote attacker could possibly use this issue to alter SAML documents.

References

Affected packages

Ubuntu:18.04:LTS / python-pysaml2

Package

Name
python-pysaml2
Purl
pkg:deb/ubuntu/python-pysaml2@4.0.2-0ubuntu3.2?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.0.2-0ubuntu3.2

Affected versions

3.*

3.0.0-3ubuntu2

4.*

4.0.2-0ubuntu2
4.0.2-0ubuntu3
4.0.2-0ubuntu3.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.0.2-0ubuntu3.2",
            "binary_name": "python-pysaml2"
        },
        {
            "binary_version": "4.0.2-0ubuntu3.2",
            "binary_name": "python3-pysaml2"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2021-21239",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:18.04:LTS"
}

Ubuntu:20.04:LTS / python-pysaml2

Package

Name
python-pysaml2
Purl
pkg:deb/ubuntu/python-pysaml2@4.9.0-0ubuntu3.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.9.0-0ubuntu3.1

Affected versions

4.*

4.5.0+dfsg1-0ubuntu2
4.9.0-0ubuntu1
4.9.0-0ubuntu2
4.9.0-0ubuntu3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.9.0-0ubuntu3.1",
            "binary_name": "python3-pysaml2"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2021-21239",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:20.04:LTS"
}