What’s Vulnerable › Vulnerabilities

CVE-2019-3821

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-03-27 · updated 2026-06-17
• Weakness: CWE-772

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.

Affected products

• Canonical Ubuntu Linux: 16.04, 18.10, 19.04
• ceph Civetweb: before 1.11 — fixed in 1.11

How to fix

Upgrade to a fixed version: ceph Civetweb 1.11. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3821
• https://github.com/ceph/civetweb/pull/33
• https://usn.ubuntu.com/4035-1/
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3821
• https://github.com/ceph/civetweb/pull/33
• https://usn.ubuntu.com/4035-1/

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