CVE-2021-3509

Publication date 27 May 2021

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
ceph	22.04 LTS jammy	Fixed 16.2.4-0ubuntu1
	21.10 impish	Fixed 16.2.4-0ubuntu1
	21.04 hirsute	Fixed 16.2.6-0ubuntu0.21.04.2
	20.10 groovy	Fixed 15.2.12-0ubuntu0.20.10.1
	20.04 LTS focal	Fixed 15.2.12-0ubuntu0.20.04.1
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected

Notes

mdeslaur

this is fixed in 16.2.4 in hirsute-updates but has not been pushed to the security pocket

sbeattie

incomplete fix for CVE-2020-27839.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
ceph	Upstream: adda853 Upstream: 7a1ca8d Upstream: af3fffa

Severity score breakdown

Parameter	Value
Base score	6.1 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Changed
Confidentiality	Low
Integrity impact	Low
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N