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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

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

6.5

Score breakdown

Status

Package Release Status
ceph
Launchpad, Ubuntu, Debian
focal
Released (15.2.12-0ubuntu0.20.04.1)
groovy
Released (15.2.12-0ubuntu0.20.10.1)
kinetic
Released (16.2.4-0ubuntu1)
trusty Needed

upstream
Released (15.2.12)
xenial Needed

impish
Released (16.2.4-0ubuntu1)
bionic
Released (12.2.13-0ubuntu0.18.04.10)
hirsute
Released (16.2.6-0ubuntu0.21.04.2)
jammy
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/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