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Bug 766438 (CVE-2021-21239)

Summary: dev-python/pysaml2: signature verification vulnerability (CVE-2021-21239)
Product: Gentoo Security Reporter: John Helmert III <ajak>
Component: VulnerabilitiesAssignee: Gentoo Security <security>
Status: RESOLVED FIXED    
Severity: minor CC: openstack, prometheanfire
Priority: Normal    
Version: unspecified   
Hardware: All   
OS: Linux   
URL: https://github.com/IdentityPython/pysaml2/security/advisories/GHSA-5p3x-r448-pc62
Whiteboard: B4 [noglsa cve]
Package list:
Runtime testing required: ---

Description John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2021-01-21 22:50:20 UTC 
CVE-2021-21239:

PySAML2 is a pure python implementation of SAML Version 2 Standard.  PySAML2 before 6.5.0 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 xmlsec1 accepts any type of key found within the given document. xmlsec1 needs to be configured explicitly to only use only _x509 certificates_ for the verification process of the SAML document signature.

This is fixed in PySAML2 6.5.0.


Please bump.
Comment 1 John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2021-07-25 00:58:45 UTC 
Removed on June 19.
Comment 2 NATTkA bot gentoo-dev 2021-07-29 17:24:21 UTC Comment hidden (obsolete)
Comment 3 NATTkA bot gentoo-dev 2021-07-29 17:32:50 UTC Comment hidden (obsolete)
Comment 4 NATTkA bot gentoo-dev 2021-07-29 17:40:42 UTC Comment hidden (obsolete)
Comment 5 NATTkA bot gentoo-dev 2021-07-29 17:48:53 UTC Comment hidden (obsolete)
Comment 6 NATTkA bot gentoo-dev 2021-07-29 18:04:48 UTC Comment hidden (obsolete)
Comment 7 NATTkA bot gentoo-dev 2021-07-29 18:13:06 UTC 
Package list is empty or all packages have requested keywords.
Comment 8 John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2021-10-16 16:01:04 UTC 
No GLSA, closing.