Bug 2258494 (CVE-2024-21654)

Summary:	CVE-2024-21654 rubygems: MFA bypass through password reset function could allow account takeover
Product:	[Other] Security Response	Reporter:	Mauro Matteo Cascella <mcascell>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	vondruch
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in Rubygems.org, the Ruby community's gem hosting service. Rubygems.org users with MFA enabled are normally protected from account takeover in the case of email account takeover. However, a workaround in the forgot password form may allow an attacker to bypass the MFA requirement and take over the account.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2258495
Bug Blocks:

Description Mauro Matteo Cascella 2024-01-15 17:22:32 UTC

Rubygems.org is the Ruby community's gem hosting service. Rubygems.org users with MFA enabled would normally be protected from account takeover in the case of email account takeover. However, a workaround on the forgotten password form allows an attacker to bypass the MFA requirement and takeover the account.

Security Advisory:
https://github.com/rubygems/rubygems.org/security/advisories/GHSA-4v23-vj8h-7jp2

Upstream fix:
https://github.com/rubygems/rubygems.org/commit/0b3272ac17b45748ee0d1867c49867c7deb26565

Comment 1 Mauro Matteo Cascella 2024-01-15 17:23:00 UTC

Created rubygems tracking bugs for this issue:

Affects: fedora-all [bug 2258495]

Comment 2 Vít Ondruch 2024-01-16 09:21:31 UTC

Unless I am mistaken, this is flaw in the http://rubygems.org service, not in the package.