Bug 2319035 (CVE-2024-47888)

Summary:	CVE-2024-47888 rubygem-actiontext: Possible ReDoS vulnerability in plain_text_for_blockquote_node in Action Text
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	akostadi, amasferr, cbartlet, chazlett, dmayorov, ehelms, ggainey, jlledo, juwatts, mhulan, mjaros, mkudlej, mmakovy, nmoumoul, pcreech, rchan, smallamp, tjochec
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 possible regular expression denial of service vulnerability was found in the plain_text_for_blockquote_node helper in Action Text in rubygem. Carefully crafted text can cause the plain_text_for_blockquote_node helper to take an unexpected amount of time, possibly resulting in a DoS.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2319056, 2319057
Bug Blocks:

Description OSIDB Bzimport 2024-10-16 01:01:42 UTC

There is a possible ReDoS vulnerability in the plain_text_for_blockquote_node helper in Action Text. This vulnerability has been assigned the CVE identifier CVE-2024-47888.

Impact
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Carefully crafted text can cause the plain_text_for_blockquote_node helper to take an unexpected amount of time, possibly resulting in a DoS vulnerability. All users running an affected release should either upgrade or apply the relevant patch immediately.

Ruby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected. Rails 8.0.0.beta1 depends on Ruby 3.2 or greater so is unaffected.


Releases
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The fixed releases are available at the normal locations.

Workarounds
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Users can avoid calling `plain_text_for_blockquote_node` or upgrade to Ruby 3.2

Credits
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Thanks to [ooooooo_q](https://hackerone.com/ooooooo_q) for the report!