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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-21238 Detail

Description

PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper verification of cryptographic signature vulnerability. All users of pysaml2 that need to validate signed SAML documents are impacted. The vulnerability is a variant of XML Signature wrapping because it did not validate the SAML document against an XML schema. This allowed invalid XML documents to be processed and such a document can trick pysaml2 with a wrapped signature. This is fixed in PySAML2 6.5.0.


Metrics

 
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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/IdentityPython/pysaml2/commit/1d8fd268f5bf887480a403a7a5ef8f048157cc14 Patch  Third Party Advisory 
https://github.com/IdentityPython/pysaml2/commit/1d8fd268f5bf887480a403a7a5ef8f048157cc14 Patch  Third Party Advisory 
https://github.com/IdentityPython/pysaml2/releases/tag/v6.5.0 Third Party Advisory 
https://github.com/IdentityPython/pysaml2/releases/tag/v6.5.0 Third Party Advisory 
https://github.com/IdentityPython/pysaml2/security/advisories/GHSA-f4g9-h89h-jgv9 Third Party Advisory 
https://github.com/IdentityPython/pysaml2/security/advisories/GHSA-f4g9-h89h-jgv9 Third Party Advisory 
https://pypi.org/project/pysaml2 Product  Third Party Advisory 
https://pypi.org/project/pysaml2 Product  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-347 Improper Verification of Cryptographic Signature GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-21238
NVD Published Date:
01/21/2021
NVD Last Modified:
11/21/2024
Source:
GitHub, Inc.