GHSA-f4g9-h89h-jgv9

Source

https://github.com/advisories/GHSA-f4g9-h89h-jgv9

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/01/GHSA-f4g9-h89h-jgv9/GHSA-f4g9-h89h-jgv9.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-f4g9-h89h-jgv9

Aliases

Published

2021-01-21T14:12:16Z

Modified

2024-10-14T18:58:14.512732Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N CVSS Calculator

Summary

SAML XML Signature wrapping in PySAML2

Details

Impact

All users of pysaml2 that use the default CryptoBackendXmlSec1 backend and need to verify signed SAML documents are impacted. pysaml2 <= 6.4.1 does not validate the SAML document against an XML schema. This allows invalid XML documents to trick the verification process, by presenting elements with a valid signature inside elements whose content has been malformed. The verification is offloaded to xmlsec1 and xmlsec1 will not validate every signature in the given document, but only the first it finds in the given scope.

Patches

Users should upgrade to pysaml2 v6.5.0.

Workarounds

No workaround provided at this point.

References

No references provided at this point.

Credits

Victor Schönfelder Garcia (isits AG International School of IT Security)
Juraj Somorovsky (Paderborn University)
Vladislav Mladenov (Ruhr University Bochum)

For more information

If you have any questions or comments about this advisory: * Open an issue in pysaml2 * Email us at the incident-response address

Database specific

{
    "nvd_published_at": "2021-01-21T15:15:00Z",
    "cwe_ids": [
        "CWE-347"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2021-01-21T14:11:38Z"
}

References

Affected packages

PyPI / pysaml2

Package

Name: pysaml2; View open source insights on deps.dev
Purl: pkg:pypi/pysaml2

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

6.5.0

Affected versions

0.*

0.4.3

1.*

1.0.1

1.0.2

1.0.3

1.1.0

2.*

2.0.0

2.1.0

2.2.0

2.3.0

2.4.0

3.*

3.0.0

3.0.2

4.*

4.0.0

4.0.1

4.0.2

4.0.3

4.0.4

4.0.5rc1

4.0.5

4.1.0

4.2.0

4.3.0

4.4.0

4.5.0

4.6.0

4.6.1

4.6.2

4.6.3

4.6.4

4.6.5

4.7.0

4.8.0

4.9.0

5.*

5.0.0

5.1.0

5.2.0

5.3.0

5.4.0

6.*

6.0.0

6.1.0

6.2.0

6.3.0

6.3.1

6.4.0

6.4.1