CVE-2020-12676

Published: Oct 2, 2020Modified: Nov 21, 2024

9.1

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitability: 3.9 / Impact: 5.2

Source: NVD

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 (1)

Products: Fusionauth: Samlv2

Fusionauth

1 product

Samlv2

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Fusionauth Samlv2	Version 0.2.3

Related CWEs

CWE-347

Improper Verification of Cryptographic Signature

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

References (10)

http://packetstormsecurity.com/files/159454/FusionAuth-SAMLv2-0.2.3-Message-Forging.html

Source: cve@mitre.org

ExploitThird Party AdvisoryVDB Entry

http://seclists.org/fulldisclosure/2020/Oct/1

Source: cve@mitre.org

ExploitMailing ListThird Party Advisory

https://compass-security.com/fileadmin/Research/Advisories/2020-06_CSNC-2020-002_FusionAuth_Signature_Exclusion_Attack.txt

Source: cve@mitre.org

ExploitMailing ListVendor Advisory

https://github.com/SAMLRaider/SAMLRaider

Source: cve@mitre.org

Third Party Advisory

https://www.nds.ruhr-uni-bochum.de/media/nds/veroeffentlichungen/2012/08/22/BreakingSAML_3.pdf

Source: cve@mitre.org

ExploitThird Party Advisory

http://packetstormsecurity.com/files/159454/FusionAuth-SAMLv2-0.2.3-Message-Forging.html