CVE-2021-3509

Public Exploit

Description

A flaw was found in Red Hat Ceph Storage 4, in the Dashboard component. 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.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.55%
Vendor Advisory redhat.com
Affected: n/a ceph-dashboard
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1950116 patch vendor advisory issue tracking
https://github.com/ceph/ceph/blob/f1557e8f62d31883d3d34ae241a1a26af11d923f/src/pybind/mgr/dashboard/controllers/docs.py#L394-L409 third party advisory exploit
https://github.com/ceph/ceph/commit/adda853e64bdba1288d46bc7d462d23d8f2f10ca third party advisory patch
https://github.com/ceph/ceph/commit/7a1ca8d372da3b6a4fc3d221a0e5f72d1d61c27b third party advisory patch
https://github.com/ceph/ceph/commit/af3fffab3b0f13057134d96e5d481e400d8bfd27 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-3509?
CVE-2021-3509 has been scored as a medium severity vulnerability.
How to fix CVE-2021-3509?
To fix CVE-2021-3509, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-3509 being actively exploited in the wild?
It is possible that CVE-2021-3509 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-3509?
CVE-2021-3509 affects n/a ceph-dashboard.
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