This document is for a development version of Ceph.
CVE-2021-3524: HTTP header injects via CORS in RGW
A flaw was found in the radosgw. The vulnerability is related to the injection of HTTP headers via a CORS ExposeHeader tag. The r character in the ExposeHeader tag in the CORS configuration file generates a header injection in the response when the CORS request is made.
Pacific v16.2.4 (and later)
Octopus v15.2.12 (and later)
Nautilus v14.2.21 (and later)
All users of Ceph object storage (RGW) should upgrade.
Red Hat would like to thank Sergey Bobrov (Kaspersky) for reporting this issue.