Bug 1950116 (CVE-2021-3509) - CVE-2021-3509 ceph-dashboard: Cross-site scripting via token Cookie
Summary: CVE-2021-3509 ceph-dashboard: Cross-site scripting via token Cookie
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-3509
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1953091 1960697 1960759
Blocks: 1950121 1951729
TreeView+ depends on / blocked
 
Reported: 2021-04-15 19:10 UTC by Pedro Sampaio
Modified: 2021-06-15 21:04 UTC (History)
37 users (show)

Fixed In Version: nautilus 14.2.20 , octopus 15.2.11 , pacific 16.2.3
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the Red Hat Ceph Storage Dashboard. In response to CVE-2020-27839, the JWT token was moved from localStorage to an httpOnly cookie. However, token cookies are used in the body of the HTTP response for the documentation, which again makes it available to XSS. The greatest threat to the system is for confidentiality, integrity, and availability.
Clone Of:
Environment:
Last Closed: 2021-06-15 21:04:04 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:2445 0 None None None 2021-06-15 17:13:03 UTC

Description Pedro Sampaio 2021-04-15 19:10:02 UTC 
A flaw was found in ceph. In order to make the JWT token inaccessible through XSS, it was moved from localStorage to httpOnly Cookie (CVE-2020-27839). But token cookie are used in the body of the HTTP response for the documentation, which again makes it available to XSS.

References:

https://github.com/ceph/ceph/blob/f1557e8f62d31883d3d34ae241a1a26af11d923f/src/pybind/mgr/dashboard/controllers/docs.py#L394-L409
Comment 7 Mauro Matteo Cascella 2021-04-29 10:41:16 UTC 
Statement:

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 Ceph Storage (RHCS) 4 ships a version of ceph which has not been patched for CVE-2020-27839, and therefore, although not vulnerable to this specific flaw, would be vulnerable if CVE-2020-27839 were to be patched without recognition of the flaw.

Red Hat Enterprise Linux 8 is not affected by this flaw as it does not include the ceph dashboard component.
Comment 8 Sage McTaggart 2021-04-29 20:36:20 UTC 
Acknowledgments:

Name: Sergey Bobrov (Kaspersky)
Comment 9 Sage McTaggart 2021-05-14 18:51:14 UTC 
Created ceph tracking bugs for this issue:

Affects: fedora-all [bug 1960759]
Comment 10 Sage McTaggart 2021-05-17 20:06:21 UTC 
Patches: 
Nautilus: https://github.com/ceph/ceph/commit/adda853e64bdba1288d46bc7d462d23d8f2f10ca
Octopus: https://github.com/ceph/ceph/commit/7a1ca8d372da3b6a4fc3d221a0e5f72d1d61c27b
Pacific: https://github.com/ceph/ceph/commit/af3fffab3b0f13057134d96e5d481e400d8bfd27
Comment 11 errata-xmlrpc 2021-06-15 17:13:00 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 12 Product Security DevOps Team 2021-06-15 21:04:04 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-2021-3509
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