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Unlimited transforms allowed for signed nodes

Moderate severity GitHub Reviewed Published Aug 27, 2021 in node-saml/passport-saml • Updated Feb 10, 2024

Package

npm passport-saml (npm)

Affected versions

< 3.1.0

Patched versions

3.1.0

Description

Impact

A malicious SAML payload can require transforms that consume significant system resources to process, thereby resulting in reduced or denied service. This would be an effective way to perform a denial-of-service attack.

Patches

This has been resolved in version 3.1.0. The resolution is to limit the number of allowable transforms to 2.

References

node-saml/passport-saml#595

References

@cjbarth cjbarth published to node-saml/passport-saml Aug 27, 2021
Published by the National Vulnerability Database Aug 27, 2021
Reviewed Aug 27, 2021
Published to the GitHub Advisory Database Aug 30, 2021
Last updated Feb 10, 2024

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS score

0.105%
(44th percentile)

Weaknesses

CVE ID

CVE-2021-39171

GHSA ID

GHSA-5379-r78w-42h2

Source code

Credits

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