Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | ceph | ceph 14.2.21 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | ceph | 14.2.21-1 | — |
| Debian 13 | ceph | 14.2.21-1 | — |
| Debian 12 | ceph | 14.2.21-1 | — |
| Debian 10 | ceph | 12.2.11+dfsg1-2.1+deb10u1 | DLA-3629-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | ceph | 15.2.12-0ubuntu0.20.04.1 | USN-4998-1 |
| Ubuntu 18.04 LTS | ceph | 12.2.13-0ubuntu0.18.04.10 | USN-5128-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Ceph Storage 5 | ceph +42 | 2:16.2.7-98.el8cp | RHSA-2022:1174 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | ceph | 15.2.12.83+g528da226523-3.25.1 | SUSE-SU-2021:1834-1 |
| SLES 15 SP2 | ceph | 15.2.12.83+g528da226523-3.25.1 | SUSE-SU-2021:1834-1 |
| SLES 15 SP1 | ceph | 14.2.21.403+g69ab6ea274d-3.63.1 | SUSE-SU-2021:1835-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP1 | ceph | 14.2.21.403+g69ab6ea274d-3.63.1 | SUSE-SU-2021:1835-1 |
| SLE Micro 5.0 | ceph | 15.2.12.83+g528da226523-3.25.1 | SUSE-SU-2021:1834-1 |
| SLE HPC 15 SP1 | ceph | 14.2.21.403+g69ab6ea274d-3.63.1 | SUSE-SU-2021:1835-1 |
| SUSE Manager Server 4.0 | ceph | 14.2.21.403+g69ab6ea274d-3.63.1 | SUSE-SU-2021:1835-1 |
| SUSE Manager Retail Branch Server 4.0 | ceph | 14.2.21.403+g69ab6ea274d-3.63.1 | SUSE-SU-2021:1835-1 |
| SUSE Manager Proxy 4.0 | ceph | 14.2.21.403+g69ab6ea274d-3.63.1 | SUSE-SU-2021:1835-1 |
| SUSE Enterprise Storage 7 | ceph | 15.2.12.83+g528da226523-3.25.1 | SUSE-SU-2021:1834-1 |
| SUSE Enterprise Storage 6 | ceph | 14.2.21.403+g69ab6ea274d-3.63.1 | SUSE-SU-2021:1835-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.3 | ceph +1 | 15.2.12.83+g528da226523-3.25.1 | openSUSE-SU-2021:1834-1 |
| openSUSE Leap 15.2 | ceph +1 | 15.2.12.83+g528da226523-lp152.2.18.1 | openSUSE-SU-2021:0833-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.18 | ceph16 | 16.2.4-r0 | — |
| Alpine v3.17 | ceph16 | 16.2.4-r0 | — |
| Alpine v3.16 | ceph | 16.2.4-r0 | — |
| Alpine v3.15 | ceph | 16.2.4-r0 | — |
| Alpine v3.14 | ceph | 16.2.4-r0 | — |
Advisories 9
- RHSA-2022:1174 Red Hat Security Advisory: Red Hat Ceph Storage 5.1 Security, Enhancement, and Bug Fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-5128-1 ceph vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-4998-1 ceph vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-3629-1 ceph - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2021:0833-1 Security update for ceph SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1834-1 Security update for ceph SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:1834-1 Security update for ceph SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-1052 Red Hat Storage: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 25, 2025
- SUSE-SU-2021:1835-1 Security update for ceph SUSE / openSUSE Security Updates · May 2, 2025
References
- [oss-security] 20210514 CVE-2021-3531: Ceph: RGW unauthenticated denial of service mailing-list
- [oss-security] 20210517 Re: CVE-2021-3531: Ceph: RGW unauthenticated denial of service mailing-list
- https://bugzilla.redhat.com/show_bug.cgi?id=1955326
- FEDORA-2021-ec414c5e18 vendor-advisory
- FEDORA-2021-6e540b85b9 vendor-advisory
- FEDORA-2021-1bf13db941 vendor-advisory
- [debian-lts-announce] 20231023 [SECURITY] [DLA 3629-1] ceph security update mailing-list