Bug 2011949 (CVE-2021-21684)

Summary:	CVE-2021-21684 jenkins-2-plugins/git: stored XSS vulnerability
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	abenaiss, aileenc, aos-bugs, bmontgom, chazlett, drieden, eparis, ggaughan, gmalinko, janstey, jburrell, jochrist, jokerman, jwon, nstielau, pbhattac, pdelbell, spandura, sponnaga, vkumar
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	Git Plugin 4.8.3	Doc Type:	If docs needed, set a value
Doc Text:	A stored cross-site scripting (XSS) vulnerability was found in the Jenkins Git plugin. Due to not escaping the Git SHA-1 checksum parameters provided to commit notifications, an attacker is able to submit crafted commit notifications to the `/git/notifyCommit` endpoint.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-28 09:08:49 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:	2015085
Bug Blocks:	2011950

Description Guilherme de Almeida Suckevicz 2021-10-07 19:18:30 UTC

Jenkins Git Plugin 4.8.2 and earlier does not escape the Git SHA-1 checksum parameters provided to commit notifications when displaying them in a build cause, resulting in a stored cross-site scripting (XSS) vulnerability.

References:
https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2499
http://www.openwall.com/lists/oss-security/2021/10/06/1

Comment 3 errata-xmlrpc 2022-03-10 13:15:42 UTC

This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.10

Via RHSA-2022:0055 https://access.redhat.com/errata/RHSA-2022:0055