Improper Verification of Cryptographic Signature Affecting passport-saml package, versions <3.2.2


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    Exploit Maturity
    Proof of concept
    EPSS
    0.94% (84th percentile)

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  • Snyk ID SNYK-JS-PASSPORTSAML-3043103
  • published 13 Oct 2022
  • disclosed 12 Oct 2022
  • credit Felix Wilhelm

How to fix?

Upgrade passport-saml to version 3.2.2 or higher.

Overview

passport-saml is an authentication provider for Passport, the Node.js authentication library.

Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature by allowing a remote attacker to bypass SAML authentication on a website using passport-saml.

Note 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 the generation of a signed message can be triggered.

Workaround

Users who are unable to upgrade to the fixed version should disable SAML authentication.

CVSS Scores

version 3.1
Expand this section

Snyk

7.4 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    None
Expand this section

NVD

8.1 high