CVE-2021-27736

· MEDIUMModified

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CVSS v3.1

6.5

EPSS

1.28%

Published

Apr 22, 2021

Modified

Nov 21, 2024

Public PoC / Exploit (1)

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Links to public security research (Exploit-DB, Nuclei, Trickest, GitHub) for defensive use only.

Description

FusionAuth fusionauth-samlv2 before 0.5.4 allows XXE attacks via a forged AuthnRequest or LogoutRequest because parseFromBytes uses javax.xml.parsers.DocumentBuilderFactory unsafely.

CVSS Vector

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

Weaknesses (CWE)

CWE-611

Affected Products (1)

fusionauth · saml_v2 (up to 0.5.4)vulnerable

References (6)

https://github.com/FusionAuth/fusionauth-samlv2/commit/c66fb689d50010662f705d5b585c6388ce555dbd

PatchThird Party Advisory

https://github.com/FusionAuth/fusionauth-samlv2/compare/0.5.3...0.5.4

PatchThird Party Advisory

https://www.compass-security.com/fileadmin/Research/Advisories/2021-03_CSNC-2021-004_FusionAuth_SAML_Library_XML_External_Entity.txt

ExploitThird Party Advisory

https://github.com/FusionAuth/fusionauth-samlv2/commit/c66fb689d50010662f705d5b585c6388ce555dbd

PatchThird Party Advisory

https://github.com/FusionAuth/fusionauth-samlv2/compare/0.5.3...0.5.4

PatchThird Party Advisory

https://www.compass-security.com/fileadmin/Research/Advisories/2021-03_CSNC-2021-004_FusionAuth_SAML_Library_XML_External_Entity.txt

ExploitThird Party Advisory

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