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CVE-2021-21238 (GCVE-0-2021-21238)

Vulnerability from cvelistv5 – Published: 2021-01-21 14:15 – Updated: 2024-08-03 18:09
VLAI
Title
SAML XML Signature wrapping
Summary
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.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version CPE status
IdentityPython pysaml2 Affected: < 6.5.0
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      "cve": "CVE-2021-21238",
      "id": "CVE-2021-21238",
      "initial_release_date": "2023-02-15T03:46:27Z",
      "product_status:recommended": "258",
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      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-21238.json",
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}



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