What is CVE-2019-3821?

CVE-2019-3821 is a high-severity vulnerability in Ceph Civetweb, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2019-03-27.

How severe is CVE-2019-3821?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Ceph Civetweb

CVE-2019-3821

A flaw was found in the way civetweb frontend was handling requests for ceph RGW server with SSL enabled. An unauthenticated attacker could create multiple connections to ceph RADOS gateway to exhaust file descriptors for ceph-radosgw service resulting in a remote denial of service.

Published 2019-03-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.029 (86.6th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.029 · newest: 0.029 · change: 0.000

Affected products

Ceph Civetweb
[Unknown] Ceph
Canonical Ubuntu Linux — versions 16.04, 18.10, 19.04

Weakness classification (CWE)

CWE-772 — Missing Release of Resource after Effective Lifetime

References

usn.ubuntu.com/4035-1/ (vendor-advisory, Third Party Advisory)
bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
github.com/ceph/civetweb/pull/33 (Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2019-3821?: CVE-2019-3821 is a high-severity vulnerability in Ceph Civetweb, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2019-03-27.
How severe is CVE-2019-3821?: High severity. CVSS v3 base score is 7.5 out of 10.