Bug 1901330 (CVE-2020-27839)

Summary:	CVE-2020-27839 ceph-dashboard: Don't use Browser's LocalStorage for storing JWT but Secure Cookies with proper HTTP Headers
Product:	[Other] Security Response	Reporter:	Sage McTaggart <amctagga>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	amctagga, anharris, bniver, branto, danmick, david, dbecker, fedora, flucifre, gfidente, gmeno, hvyas, i, jdurgin, jjoyce, josef, jschluet, kdreyer, lhh, loic, lpeer, madam, mbenjamin, mburns, mhackett, mhicks, ocs-bugs, ramkrsna, sclewis, slinaber, sostapov, steve, vereddy
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	ceph-dashboard 14.2.17, ceph-dashboard 15.2.9	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in ceph-dashboard. The JSON Web Token (JWT) used for user authentication is stored by the frontend application in the browser’s localStorage which is potentially vulnerable to attackers via XSS attacks. The highest threat from this vulnerability is to data confidentiality and integrity.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-06-15 21:03:54 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:	1906948, 1906954, 1910511
Bug Blocks:	1898181

Description Sage McTaggart 2020-11-24 21:21:55 UTC

Issue:

The JSON Web Token (JWT) used for user authentication is stored the by the frontend application in the browser’s localStorage.


Suggestion:

Do not store sensitive data in HTML5 localStorage, not even temporarily. Use cookies with appropriate security flags (secure, HttpOnly, SameSite).

Comment 6 Sage McTaggart 2020-12-11 22:39:41 UTC

Created ceph tracking bugs for this issue:

Affects: fedora-all [bug 1906954]

Comment 10 Sage McTaggart 2020-12-17 18:34:46 UTC

https://tracker.ceph.com/issues/44591 attaching ceph tracker for reference.

Comment 12 Eric Christensen 2021-02-17 20:14:48 UTC

Statement:

* Red Hat Ceph Storage 3 is not affected as it does not use authentication for the dashboard.

* Red Hat OpenStack Platform deployments use the ceph package directly from the Ceph channel; the RHOSP package will not be updated at this time.

* Red Hat OpenShift Container Storage (RHOCS) 4 shipped ceph package for the usage of RHOCS 4.2 only which has reached End of Life. The shipped version of ceph package is neither used nor supported with the release of RHOCS 4.3.

* Red Hat Enterprise Linux 8 does not include the ceph dashboard component.

Comment 13 Eric Christensen 2021-02-17 20:14:50 UTC

Mitigation:

Do not store sensitive data in HTML5 localStorage, not even temporarily. Use cookies with appropriate security flags (secure, HttpOnly, SameSite).

Comment 14 errata-xmlrpc 2021-06-15 17:12:58 UTC

This issue has been addressed in the following products:

  Red Hat Ceph Storage 4.2

Via RHSA-2021:2445 https://access.redhat.com/errata/RHSA-2021:2445

Comment 15 Product Security DevOps Team 2021-06-15 21:03:54 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-2020-27839