CVE-2021-3531

Publication date 18 May 2021

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

A flaw was found in the Red Hat Ceph Storage RGW in versions before 14.2.21. When processing a GET Request for a swift URL that ends with two slashes it can cause the rgw to crash, resulting in a denial of service. The greatest threat to the system is of availability.

From the Ubuntu Security Team

It was discovered that Ceph's RadosGW (Ceph Object Gateway) did not properly handle GET requests for swift URLs in some situations, leading to an application crash. An attacker could use this to cause a denial of service.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
ceph	24.04 LTS noble	Fixed 16.2.4-0ubuntu1
	23.10 mantic	Fixed 16.2.4-0ubuntu1
	23.04 lunar	Fixed 16.2.4-0ubuntu1
	22.10 kinetic	Fixed 16.2.4-0ubuntu1
	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	Fixed 12.2.13-0ubuntu0.18.04.10
	16.04 LTS xenial	Vulnerable
	14.04 LTS trusty	Vulnerable

Notes

mdeslaur

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

Patch details

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

Package	Patch details
ceph	Upstream: f44a8ae Upstream: b87e64e Upstream: bf06990

Severity score breakdown

Parameter	Value
Base score	5.3 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	Low
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L