National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2020-5390 Detail

Current 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.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 7.5 HIGH
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/IdentityPython/pysaml2/commit/5e9d5acbcd8ae45c4e736ac521fd2df5b1c62e25 Patch Third Party Advisory
https://github.com/IdentityPython/pysaml2/commit/f27c7e7a7010f83380566a219fd6a290a00f2b6e Patch Third Party Advisory
https://github.com/IdentityPython/pysaml2/releases Release Notes Third Party Advisory
https://github.com/IdentityPython/pysaml2/releases/tag/v5.0.0 Release Notes Third Party Advisory
https://pypi.org/project/pysaml2/5.0.0/ Product Third Party Advisory
https://usn.ubuntu.com/4245-1/

Weakness Enumeration

CWE-ID CWE Name Source
CWE-347 Improper Verification of Cryptographic Signature NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:pysaml2_project:pysaml2:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
5.0.0


Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-5390
NVD Published Date:
01/13/2020
NVD Last Modified:
01/27/2020