Vulnerability · Published Jan 2, 2024 · Assigned by GitHub_M

CVE-2024-21632omniauth-microsoft_graph vulnerable to account takeover (nOAuth)

High 8.6

In plain English

A high-severity improper authentication in omniauth-microsoft_graph from synth. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 60% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.6High

Exploit odds (30 days)0.9%top 40.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

omniauth-microsoft_graph provides an Omniauth strategy for the Microsoft Graph API. Prior to versions 2.0.0, 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. This could lead to account takeover. Version 2.0.0 contains a fix for this issue.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
RubyGems	omniauth-microsoft_graph	2.0.0	GHSA-5g66-628f-7cvj

Affected products (as reported)

Vendor	Product	Versions
synth	omniauth-microsoft_graph	< 2.0.0

Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

References

https://github.com/synth/omniauth-microsoft_graph/security/advisories/GHSA-5g66-628f-7cvj x_refsource_CONFIRM
https://github.com/synth/omniauth-microsoft_graph/commit/f132078389612b797c872b45bd0e0b47382414c1 x_refsource_MISC
https://www.descope.com/blog/post/noauth x_refsource_MISC