Bug 2319034 (CVE-2024-47887)

Summary:	CVE-2024-47887 rubygem-actionpack: Possible ReDoS vulnerability in HTTP Token authentication in Action Controller
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 flaw was found in rubygem actionpack. For applications using HTTP Token authentication via `authenticate_or_request_with_http_token` or similar, a carefully crafted header may cause header parsing to take an unexpected amount of time, possibly resulting in a denial of service.	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:	2319058, 2319059
Bug Blocks:

Description OSIDB Bzimport 2024-10-16 01:01:40 UTC

There is a possible ReDoS vulnerability in Action Controller's HTTP Token authentication. This vulnerability has been assigned the CVE identifier CVE-2024-47887.

Impact
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For applications using HTTP Token authentication via `authenticate_or_request_with_http_token` or similar, a carefully crafted header may cause header parsing 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 on Ruby 3.2 are unaffected by this issue.


Credits
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Thanks to [scyoon](https://hackerone.com/scyoon) for reporting