Bug 2349699 (CVE-2025-27219)

Summary:	CVE-2025-27219 CGI: Denial of Service in CGI::Cookie.parse
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	crizzo, jvasik, kaycoth, rblanco, vmugicag
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 Ruby's CGI gem. Processing specially crafted large cookies with the CGI::Cookie.parse method can cause excessive resource consumption due to a missing limit on the length of the raw cookie value, 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:	2357516
Bug Blocks:

Description OSIDB Bzimport 2025-03-04 00:01:09 UTC

In the CGI gem before 0.4.2 for Ruby, the CGI::Cookie.parse method in the CGI library contains a potential Denial of Service (DoS) vulnerability. The method does not impose any limit on the length of the raw cookie value it processes. This oversight can lead to excessive resource consumption when parsing extremely large cookies.

Comment 2 errata-xmlrpc 2025-04-22 02:18:08 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2025:4063 https://access.redhat.com/errata/RHSA-2025:4063

Comment 3 errata-xmlrpc 2025-05-06 02:15:15 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:4487 https://access.redhat.com/errata/RHSA-2025:4487

Comment 4 errata-xmlrpc 2025-05-06 02:27:55 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:4488 https://access.redhat.com/errata/RHSA-2025:4488

Comment 5 errata-xmlrpc 2025-05-06 02:28:10 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:4493 https://access.redhat.com/errata/RHSA-2025:4493

Comment 6 errata-xmlrpc 2025-05-26 08:33:45 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2025:8131 https://access.redhat.com/errata/RHSA-2025:8131