CVE-2019-3821

Name: CVE-2019-3821
Creator: NVD / NIST
Published: 2019-03-27T13:29:01.507+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.95%

Last modified Jun 17, 2026

CVE-2019-3821 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 2.95% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

2.95%

85.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Ceph	Civetweb	< 1.11
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.10
Canonical	Ubuntu Linux	19.04

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3821Issue Tracking, Third Party Advisory
https://github.com/ceph/civetweb/pull/33Issue Tracking, Third Party Advisory
https://usn.ubuntu.com/4035-1/Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3821Issue Tracking, Third Party Advisory
https://github.com/ceph/civetweb/pull/33Issue Tracking, Third Party Advisory
https://usn.ubuntu.com/4035-1/Third Party Advisory

Timeline

Published: Mar 27, 2019
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2019-3821?

How severe is CVE-2019-3821?

CVE-2019-3821 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.95% probability of exploitation in the next 30 days.

How do I fix CVE-2019-3821?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-3821?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST