CVE-2020-27839

Published: 26 May 2021

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.

From the Ubuntu security team

It was 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.

Priority

Medium

CVSS 3 base score: 5.4

Status

Package Release Status
ceph
Launchpad, Ubuntu, Debian
Upstream
Released (16.1.0,15.2.9)
Ubuntu 21.10 (Impish Indri)
Released (16.1.0-0ubuntu2)
Ubuntu 21.04 (Hirsute Hippo)
Released (16.1.0-0ubuntu2)
Ubuntu 20.04 LTS (Focal Fossa)
Released (15.2.12-0ubuntu0.20.04.1)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(12.2.13-0ubuntu0.18.04.8)
Ubuntu 16.04 ESM (Xenial Xerus) Not vulnerable

Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable

Patches:
Upstream: https://github.com/ceph/ceph/commit/23f2604d6f9ac16779b4ac43aab6e4e434f2e8ec
Upstream: https://github.com/ceph/ceph/commit/e5501a34ee8237dfe64104c612c812b16121db6d (octopus)