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CVE-2021-3531

Published: 18 May 2021

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.

Notes

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

Priority

Medium

Cvss 3 Severity Score

5.3

Score breakdown

Status

Package Release Status
ceph
Launchpad, Ubuntu, Debian
impish
Released (16.2.4-0ubuntu1)
jammy
Released (16.2.4-0ubuntu1)
bionic
Released (12.2.13-0ubuntu0.18.04.10)
trusty Needed

upstream
Released (15.2.12)
xenial Needed

focal
Released (15.2.12-0ubuntu0.20.04.1)
groovy
Released (15.2.12-0ubuntu0.20.10.1)
hirsute
Released (16.2.6-0ubuntu0.21.04.2)
kinetic
Released (16.2.4-0ubuntu1)
lunar
Released (16.2.4-0ubuntu1)
mantic
Released (16.2.4-0ubuntu1)
Patches:
upstream: https://github.com/ceph/ceph/commit/f44a8ae8aa27ecef69528db9aec220f12492810e (nautilus)
upstream: https://github.com/ceph/ceph/commit/b87e64e3206210580f4a6df2d77f9ae3f1033039 (octopus)
upstream: https://github.com/ceph/ceph/commit/bf06990ab41d7ac299e4441ad9cd434e926a18e7 (pacific)

Severity score breakdown

Parameter Value
Base score 5.3
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