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.

Priority

Medium

CVSS 3 base score: 6.5

Status

Package Release Status
ceph
Launchpad, Ubuntu, Debian
Upstream
Released (15.2.12)
Ubuntu 21.04 (Hirsute Hippo) Needed

Ubuntu 20.04 LTS (Focal Fossa)
Released (15.2.12-0ubuntu0.20.04.1)
Ubuntu 18.04 LTS (Bionic Beaver) Needed

Ubuntu 16.04 ESM (Xenial Xerus) Needs triage

Ubuntu 14.04 ESM (Trusty Tahr) Needs triage

Patches:
Upstream: https://github.com/ceph/ceph/commit/763aebb94678018f89427137ffbc0c5205b1edc1

Notes

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

References

Bugs