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Omniauth::MicrosoftGraph Account takeover (nOAuth)

High severity GitHub Reviewed Published Jan 2, 2024 in synth/omniauth-microsoft_graph • Updated Jan 9, 2024

Package

bundler omniauth-microsoft_graph (RubyGems)

Affected versions

< 2.0.0

Patched versions

2.0.0

Description

Summary

The implementation did not validate the legitimacy of the email attribute of the user nor did it give/document an option to do so, making it susceptible to nOAuth misconfiguration in cases when the email is used as a trusted user identifier

References

@synth synth published to synth/omniauth-microsoft_graph Jan 2, 2024
Published by the National Vulnerability Database Jan 2, 2024
Published to the GitHub Advisory Database Jan 3, 2024
Reviewed Jan 3, 2024
Last updated Jan 9, 2024

Severity

High

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
High
Integrity
Low
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:H/I:L/A:L

EPSS score

0.084%
(38th percentile)

Weaknesses

CVE ID

CVE-2024-21632

GHSA ID

GHSA-5g66-628f-7cvj

Source code

Credits

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