CVEvulnerability
CVE-2020-12676
9.1 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2020-10-02
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.1 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- CVSS 2.0 ([email protected])
- 6.4 MEDIUM — AV:N/AC:L/Au:N/C:P/I:P/A:N
- Weaknesses
- CWE-347
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".
Affected configurations
• fusionauth samlv2 0.2.3
Related
Weakness · CWE (1)
- CWE-347 Improper Verification of Cryptographic Signature weakness
References
- http://packetstormsecurity.com/files/159454/FusionAuth-SAMLv2-0.2.3-Message-Forging.html Exploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2020/Oct/1 Exploit, Mailing List, Third Party Advisory
- https://compass-security.com/fileadmin/Research/Advisories/2020-06_CSNC-2020-002_FusionAuth_Signature_Exclusion_Attack.txt Exploit, Mailing List, Vendor Advisory
- https://github.com/SAMLRaider/SAMLRaider Third Party Advisory
- https://www.nds.ruhr-uni-bochum.de/media/nds/veroeffentlichungen/2012/08/22/BreakingSAML_3.pdf Exploit, Third Party Advisory
- http://packetstormsecurity.com/files/159454/FusionAuth-SAMLv2-0.2.3-Message-Forging.html Exploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2020/Oct/1 Exploit, Mailing List, Third Party Advisory
- https://compass-security.com/fileadmin/Research/Advisories/2020-06_CSNC-2020-002_FusionAuth_Signature_Exclusion_Attack.txt Exploit, Mailing List, Vendor Advisory
- https://github.com/SAMLRaider/SAMLRaider Third Party Advisory
- https://www.nds.ruhr-uni-bochum.de/media/nds/veroeffentlichungen/2012/08/22/BreakingSAML_3.pdf Exploit, Third Party Advisory