CVE-2022-39300 Signature bypass via multiple root elements in node-SAML

2022-10-1300:00:00

CWE-347

GitHub_M

www.cve.org

cve-2022-39300

signature bypass

node-saml

passport-saml

saml authentication

remote attacker

arbitrary idp

upgrade

version 4.0.0-beta5

disabling saml

7.7 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

LOW

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

8.5 High

AI Score

Confidence

High

0.003 Low

EPSS

Percentile

70.8%

JSON

node SAML is a SAML 2.0 library based on the SAML implementation of passport-saml. A remote attacker may be able to bypass SAML authentication on a website using passport-saml. A successful attack requires that the attacker is in possession of an arbitrary IDP signed XML element. Depending on the IDP used, fully unauthenticated attacks (e.g without access to a valid user) might also be feasible if generation of a signed message can be triggered. Users should upgrade to node-saml version 4.0.0-beta5 or newer. Disabling SAML authentication may be done as a workaround.

CNA Affected

[
  {
    "vendor": "node-saml",
    "product": "node-saml",
    "versions": [
      {
        "version": "< 4.0.0-beta.5",
        "status": "affected"
      }
    ]
  }
]