CVE-2021-3524
Published: 17 May 2021
A flaw was found in the Red Hat Ceph Storage RadosGW (Ceph Object Gateway) in versions before 14.2.21. The vulnerability is related to the injection of HTTP headers via a CORS ExposeHeader tag. The newline character in the ExposeHeader tag in the CORS configuration file generates a header injection in the response when the CORS request is made. In addition, the prior bug fix for CVE-2020-10753 did not account for the use of \r as a header separator, thus a new flaw has been created.
From the Ubuntu Security Team
Sergey Bobrov discovered that Ceph's RadosGW (Ceph Object Gateway) allowed the injection of HTTP headers in responses to CORS requests. An attacker could use this to violate system integrity.
Notes
| Author | Note |
|---|---|
| mdeslaur | this is fixed in 16.2.4 in hirsute-updates but has not been pushed to the security pocket |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
ceph Launchpad, Ubuntu, Debian |
bionic |
Released
(12.2.13-0ubuntu0.18.04.10)
|
| 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)
|
|
| impish |
Released
(16.2.4-0ubuntu1)
|
|
| jammy |
Released
(16.2.4-0ubuntu1)
|
|
| kinetic |
Released
(16.2.4-0ubuntu1)
|
|
| lunar |
Released
(16.2.4-0ubuntu1)
|
|
| trusty |
Needed
|
|
| upstream |
Released
(15.2.12)
|
|
| xenial |
Needed
|
|
|
Patches: upstream: https://github.com/ceph/ceph/commit/763aebb94678018f89427137ffbc0c5205b1edc1 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | High |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |