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CVE-2020-5390

Status Candidate

Overview

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.

Related Files

Ubuntu Security Notice USN-4245-1
Posted Jan 21, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4245-1 - It was discovered that PySAML2 incorrectly handled certain SAML files. An attacker could possibly use this issue to bypass signature verification with arbitrary data.

tags | advisory, arbitrary
systems | linux, ubuntu
advisories | CVE-2020-5390
MD5 | 930e89bc3b6e8746a3917ed4d9a3ead0
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