Bug 2179637 (CVE-2023-28120)

Summary:	CVE-2023-28120 rubygem-activesupport: Possible XSS in SafeBuffer#bytesplice
Product:	[Other] Security Response	Reporter:	ybuenos
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	amackenz, amasferr, bbuckingham, bcourt, chazlett, ehelms, jcantril, jsherril, lzap, mhulan, mkudlej, myarboro, nmoumoul, orabin, pcreech, periklis, rchan, tjochec
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	rubygem-activesupport 6.1.7.3, rubygem-activesupport 7.0.4.3	Doc Type:	---
Doc Text:	A Cross-Site-Scripting vulnerability was found in rubygem ActiveSupport. If the new bytesplice method is called on a SafeBuffer with untrusted user input, malicious code could be executed.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-06-13 05:30:05 UTC	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:	2179645, 2179644
Bug Blocks:	2178818

Description ybuenos 2023-03-19 12:48:40 UTC

There is a vulnerability in ActiveSupport if the new bytesplice method is called on a SafeBuffer with untrusted user input. ActiveSupport uses the SafeBuffer string subclass to tag strings as html_safe after they have been sanitized. When these strings are mutated, the tag should be removed to mark them as no longer being html_safe.

Comment 1 ybuenos 2023-03-19 14:15:57 UTC

Created rubygem-activesupport tracking bugs for this issue:

Affects: epel-all [bug 2179645]
Affects: fedora-all [bug 2179644]

Comment 4 errata-xmlrpc 2023-04-26 07:58:22 UTC

This issue has been addressed in the following products:

  RHOL-5.6-RHEL-8

Via RHSA-2023:1953 https://access.redhat.com/errata/RHSA-2023:1953

Comment 5 errata-xmlrpc 2023-06-12 19:08:57 UTC

This issue has been addressed in the following products:

  RHOL-5.7-RHEL-8

Via RHSA-2023:3495 https://access.redhat.com/errata/RHSA-2023:3495

Comment 6 Product Security DevOps Team 2023-06-13 05:30:02 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2023-28120