CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0CVE-2021-21238 – SAML XML Signature wrapping
https://notcve.org/view.php?id=CVE-2021-21238
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. • https://github.com/IdentityPython/pysaml2/commit/1d8fd268f5bf887480a403a7a5ef8f048157cc14 https://github.com/IdentityPython/pysaml2/releases/tag/v6.5.0 https://github.com/IdentityPython/pysaml2/security/advisories/GHSA-f4g9-h89h-jgv9 https://pypi.org/project/pysaml2 • CWE-347: Improper Verification of Cryptographic Signature •
CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 2CVE-2021-21239 – Open default xmlsec1 key-type preference
https://notcve.org/view.php?id=CVE-2021-21239
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. • https://github.com/RyanBoomer30/CVE-2021-21239-Exploit https://github.com/IdentityPython/pysaml2/commit/46578df0695269a16f1c94171f1429873f90ed99 https://github.com/IdentityPython/pysaml2/releases/tag/v6.5.0 https://github.com/IdentityPython/pysaml2/security/advisories/GHSA-5p3x-r448-pc62 https://lists.debian.org/debian-lts-announce/2021/02/msg00038.html https://pypi.org/project/pysaml2 https://www.aleksey.com/pipermail/xmlsec/2013/009717.html • CWE-347: Improper Verification of Cryptographic Signature •
CVSS: 7.5EPSS: 0%CPEs: 8EXPL: 0CVE-2020-5390
https://notcve.org/view.php?id=CVE-2020-5390
PySAML2 before 5.0.0 does not check that the signature in a SAML document is enveloped and thus signature wrapping is effective, i.e., it is affected by XML Signature Wrapping (XSW). The signature information and the node/object that is signed can be in different places and thus the signature verification will succeed, but the wrong data will be used. This specifically affects the verification of assertion that have been signed. PySAML2 versiones anteriores a la versión 5.0.0 no comprueba que la firma en un documento SAML esté envuelta y, por lo tanto, el empaquetado de la firma es efectivo, es decir, está afectado por XML Signature Wrapping (XSW). La información de la firma y el nodo u objeto que está firmado puede estar en diferentes lugares y, por lo tanto, la comprobación de la firma tendrá éxito, pero serán usados los datos incorrectos. • https://github.com/IdentityPython/pysaml2/commit/5e9d5acbcd8ae45c4e736ac521fd2df5b1c62e25 https://github.com/IdentityPython/pysaml2/commit/f27c7e7a7010f83380566a219fd6a290a00f2b6e https://github.com/IdentityPython/pysaml2/releases https://github.com/IdentityPython/pysaml2/releases/tag/v5.0.0 https://lists.debian.org/debian-lts-announce/2020/02/msg00025.html https://pypi.org/project/pysaml2/5.0.0 https://usn.ubuntu.com/4245-1 https://www.debian.org/security/2020/dsa-4630 • CWE-347: Improper Verification of Cryptographic Signature •
CVSS: 8.1EPSS: 0%CPEs: 3EXPL: 0CVE-2017-1000433
https://notcve.org/view.php?id=CVE-2017-1000433
pysaml2 version 4.4.0 and older accept any password when run with python optimizations enabled. This allows attackers to log in as any user without knowing their password. pysaml2, en su versión 4.4.0 y anteriores, acepta cualquier contraseña cuando se ejecuta con las optimizaciones de python habilitadas. Esto permite que atacantes inicien sesión como cualquier usuario sin conocer su contraseña. • https://github.com/rohe/pysaml2/issues/451 https://lists.debian.org/debian-lts-announce/2018/07/msg00000.html https://lists.debian.org/debian-lts-announce/2021/02/msg00038.html https://security.gentoo.org/glsa/201801-11 • CWE-287: Improper Authentication •
CVSS: 5.3EPSS: 0%CPEs: 1EXPL: 0CVE-2017-1000246
https://notcve.org/view.php?id=CVE-2017-1000246
Python package pysaml2 version 4.4.0 and earlier reuses the initialization vector across encryptions in the IDP server, resulting in weak encryption of data. El paquete pysaml2 de Python en versiones 4.4.0 y anteriores reutiliza el vector de inicialización a lo largo de los cifrados en el servidor IDP, provocando un cifrado débil de los datos. • https://github.com/rohe/pysaml2/issues/417 • CWE-330: Use of Insufficiently Random Values •