Vulnerability CVE-2020-12676
Published: 2020-10-02

Description:
FusionAuth fusionauth-samlv2 0.2.3 allows remote attackers to forge messages and bypass authentication via a SAML assertion that lacks a Signature element, aka a "Signature exclusion attack".

See advisories in our WLB2 database:
Topic
Author
Date
High
FusionAuth-SAMLv2 0.2.3 Message Forging
Felix Sieges
03.10.2020

Type:

CWE-347

 (Improper Verification of Cryptographic Signature)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.4/10
4.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
None
Affected software
Compass-security -> Fusionauth-samlv2 

 References:
http://packetstormsecurity.com/files/159454/FusionAuth-SAMLv2-0.2.3-Message-Forging.html
http://seclists.org/fulldisclosure/2020/Oct/1
https://compass-security.com/fileadmin/Research/Advisories/2020-06_CSNC-2020-002_FusionAuth_Signature_Exclusion_Attack.txt
https://github.com/SAMLRaider/SAMLRaider
https://www.nds.ruhr-uni-bochum.de/media/nds/veroeffentlichungen/2012/08/22/BreakingSAML_3.pdf
Copyright 2024, cxsecurity.com

 

Back to Top