Vulnerability Details CVE-2020-12676
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".
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 36.1%
CVSS Severity
CVSS v3 Score 9.1
CVSS v2 Score 6.4
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
- 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
Products affected by CVE-2020-12676
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cpe:2.3:a:fusionauth:samlv2:0.2.3