USN-4245-1

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Source
https://ubuntu.com/security/notices/USN-4245-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4245-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4245-1
Upstream
Related
Published
2020-01-21T16:41:42.168291Z
Modified
2025-10-13T04:35:02Z
Summary
python-pysaml2 vulnerability
Details

It was discovered that PySAML2 incorrectly handled certain SAML files. An attacker could possibly use this issue to bypass signature verification with arbitrary data.

References

Affected packages

Ubuntu:16.04:LTS / python-pysaml2

Package

Name
python-pysaml2
Purl
pkg:deb/ubuntu/python-pysaml2@3.0.0-3ubuntu1.16.04.4?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.0.0-3ubuntu1.16.04.4

Affected versions

2.*

2.4.0-0ubuntu2

3.*

3.0.0-3ubuntu1
3.0.0-3ubuntu1.16.04.1
3.0.0-3ubuntu1.16.04.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.0.0-3ubuntu1.16.04.4",
            "binary_name": "python-pysaml2"
        },
        {
            "binary_version": "3.0.0-3ubuntu1.16.04.4",
            "binary_name": "python3-pysaml2"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:16.04:LTS",
    "cves": [
        {
            "id": "CVE-2020-5390",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:18.04:LTS / python-pysaml2

Package

Name
python-pysaml2
Purl
pkg:deb/ubuntu/python-pysaml2@4.0.2-0ubuntu3.1?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.0.2-0ubuntu3.1

Affected versions

3.*

3.0.0-3ubuntu2

4.*

4.0.2-0ubuntu2
4.0.2-0ubuntu3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.0.2-0ubuntu3.1",
            "binary_name": "python-pysaml2"
        },
        {
            "binary_version": "4.0.2-0ubuntu3.1",
            "binary_name": "python3-pysaml2"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:18.04:LTS",
    "cves": [
        {
            "id": "CVE-2020-5390",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}