Detections
Analytics
CVE-2020-5390
high
Description
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.
References
https://www.debian.org/security/2020/dsa-4630
https://usn.ubuntu.com/4245-1/
https://pypi.org/project/pysaml2/5.0.0/
https://lists.debian.org/debian-lts-announce/2020/02/msg00025.html
https://github.com/IdentityPython/pysaml2/releases/tag/v5.0.0
https://github.com/IdentityPython/pysaml2/releases
https://github.com/IdentityPython/pysaml2/commit/f27c7e7a7010f83380566a219fd6a290a00f2b6e
https://github.com/IdentityPython/pysaml2/commit/5e9d5acbcd8ae45c4e736ac521fd2df5b1c62e25