Bug 1925151 (CVE-2021-21610) - CVE-2021-21610 jenkins: Reflected XSS vulnerability in markup formatter preview
Summary: CVE-2021-21610 jenkins: Reflected XSS vulnerability in markup formatter preview
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-21610
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1925482 1925483 1925484 1925485 1925486 1929919 1929921
Blocks: 1925147
TreeView+ depends on / blocked
 
Reported: 2021-02-04 13:52 UTC by Michael Kaplan
Modified: 2021-04-13 09:21 UTC (History)
23 users (show)

Fixed In Version: jenkins 2.275, jenkins LTS 2.263.2
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in jenkins. A cross-site scripting (XSS) vulnerability is possible due to the lack of restrictions in URL rendering in the formatted previews of markup passed as a query parameter if the configured markup formatter does not prohibit unsafe elements in the markup. The highest threat from this vulnerability is to data confidentiality and integrity.
Clone Of:
Environment:
Last Closed: 2021-02-18 19:02:33 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:0423 0 None None None 2021-02-17 19:04:58 UTC
Red Hat Product Errata RHSA-2021:0429 0 None None None 2021-03-03 04:17:56 UTC

Description Michael Kaplan 2021-02-04 13:52:42 UTC 
Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not implement any restrictions for the URL rendering a formatted preview of markup passed as a query parameter, resulting in a reflected cross-site scripting (XSS) vulnerability if the configured markup formatter does not prohibit unsafe elements (JavaScript) in markup.
Comment 3 errata-xmlrpc 2021-02-17 19:04:56 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.6

Via RHSA-2021:0423 https://access.redhat.com/errata/RHSA-2021:0423
Comment 4 Product Security DevOps Team 2021-02-18 19:02:33 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-2021-21610
Comment 5 errata-xmlrpc 2021-03-03 04:17:55 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.5

Via RHSA-2021:0429 https://access.redhat.com/errata/RHSA-2021:0429
Note You need to log in before you can comment on or make changes to this bug.