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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

Debian Security Advisory 4630-1
Posted Feb 28, 2020
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4630-1 - It was discovered that pysaml2, a Python implementation of SAML to be used in a WSGI environment, was susceptible to XML signature wrapping attacks, which could result in a bypass of signature verification.

tags | advisory, python
systems | linux, debian
advisories | CVE-2020-5390
SHA-256 | b455e7a7fba61ee1881640cfb2163c846bf832ec6b79543bd174a3815adaea48
Download | Favorite | View
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
SHA-256 | d28dadbc4fdf024368f31d4e93e522886ccf8af4b5fa5fc0d7727de51c24cc9e
Download | Favorite | View
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