Advisories for Pypi/Pysaml2 package

PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 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 …

PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 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 …

PySAML2 does not check that the signature in a SAML document is enveloped and thus signature wrapping is effective, i. 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.

XML External Entity vulnerability in PySAML2 4.4.0 and earlier allows remote attackers to read arbitrary files via a crafted SAML XML request or response.

pysaml2 accept any password when run with python optimizations enabled. This allows attackers to log in as any user without knowing their password.

Python package pysaml2 reuses the initialization vector across encryptions in the IDP server, resulting in weak encryption of data.

PySAML2 allows remote attackers to conduct XML external entity (XXE) attacks via a crafted SAML XML request or response.

PySAML2 is vulnerable to XML External Entity attacks (XEE attacks) via SAML XML requests.