CVE-2022-3854 — A flaw was found in Ceph, relating to the URL processing on RGW backends

A flaw was found in Ceph, relating to the URL processing on RGW backends. An attacker can exploit the URL processing by providing a null URL to crash the RGW, causing a denial of service.

01What is this vulnerability?

A flaw was found in Ceph, relating to the URL processing on RGW backends. An attacker can exploit the URL processing by providing a null URL to crash the RGW, causing a denial of service.

02Affected products

Vendor	Product	Versions
n	a / ceph	As shipped with Red Hat Ceph 3, 4, and 5.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-03-06T00:00:00.000Z
• Last modified: 2025-03-06T18:54:06.925Z

09References

• bugzilla.redhat.com — https://bugzilla.redhat.com/show_bug.cgi?id=2139925