Insecure Defaults Affecting pysaml2 package, versions [,6.5.0)
Snyk CVSS
Attack Complexity
Low
User Interaction
Required
Threat Intelligence
EPSS
0.2% (59th
percentile)
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Test your applications- Snyk ID SNYK-PYTHON-PYSAML2-1063038
- published 20 Jan 2021
- disclosed 20 Jan 2021
- credit Brian Wolff
Introduced: 20 Jan 2021
CVE-2021-21239 Open this link in a new tabHow to fix?
Upgrade pysaml2 to version 6.5.0 or higher.
Overview
pysaml2 is a Python implementation of SAML Version 2 Standard.
Affected versions of this package are vulnerable to Insecure Defaults. It does not ensure that a signed SAML document is correctly signed. The default CryptoBackendXmlSec1 backend is using the xmlsec1 binary to verify the signature of signed SAML documents, but by default, xmlsec1 accepts any type of key found within the given document.