Published: 27 May 2021
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.
From the Ubuntu Security Team
Sergey Bobrov discovered that the Ceph dashboard was susceptible to a cross-site scripting attack. An attacker could use this to expose sensitive information or gain unintended access.
this is fixed in 16.2.4 in hirsute-updates but has not been pushed to the security pocket
incomplete fix for CVE-2020-27839.
Cvss 3 Severity Score
Launchpad, Ubuntu, Debian
upstream: https://github.com/ceph/ceph/commit/adda853e64bdba1288d46bc7d462d23d8f2f10ca (nautilus)
upstream: https://github.com/ceph/ceph/commit/7a1ca8d372da3b6a4fc3d221a0e5f72d1d61c27b (octopus)
upstream: https://github.com/ceph/ceph/commit/af3fffab3b0f13057134d96e5d481e400d8bfd27 (pacific)
Severity score breakdown