CVE-2021-21239
Vulnerability from cvelistv5
Published
2021-01-21 14:15
Modified
2024-08-03 18:09
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
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. Users of pysaml2 that use the default CryptoBackendXmlSec1 backend and need to verify signed SAML documents are impacted. PySAML2 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. xmlsec1 needs to be configured explicitly to only use only _x509 certificates_ for the verification process of the SAML document signature. This is fixed in PySAML2 6.5.0.
References
security-advisories@github.comhttps://github.com/IdentityPython/pysaml2/commit/46578df0695269a16f1c94171f1429873f90ed99Patch, Third Party Advisory
security-advisories@github.comhttps://github.com/IdentityPython/pysaml2/releases/tag/v6.5.0Third Party Advisory
security-advisories@github.comhttps://github.com/IdentityPython/pysaml2/security/advisories/GHSA-5p3x-r448-pc62Third Party Advisory
security-advisories@github.comhttps://lists.debian.org/debian-lts-announce/2021/02/msg00038.htmlMailing List, Third Party Advisory
security-advisories@github.comhttps://pypi.org/project/pysaml2Product, Third Party Advisory
security-advisories@github.comhttps://www.aleksey.com/pipermail/xmlsec/2013/009717.htmlExploit, Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/IdentityPython/pysaml2/commit/46578df0695269a16f1c94171f1429873f90ed99Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/IdentityPython/pysaml2/releases/tag/v6.5.0Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/IdentityPython/pysaml2/security/advisories/GHSA-5p3x-r448-pc62Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/02/msg00038.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://pypi.org/project/pysaml2Product, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.aleksey.com/pipermail/xmlsec/2013/009717.htmlExploit, Mailing List, Third Party Advisory
Impacted products
Vendor Product Version
Show details on NVD website

To clipboard 

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