CVE-2019-3821: canonical ubuntu_linux
Vulnerability summary
CVE-2019-3821 is a high (CVSS 7.5) vulnerability in canonical ubuntu_linux. EPSS estimates a 2.95% chance of exploitation in the next 30 days, higher than 87.1% of scored vulnerabilities.
Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 3% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 27-03-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
6 scores · 3 sources · 3 versions- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
2.95%
Chance of exploitation in the next 30 days
Percentile
87%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.95% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
[unknown]1 product
- cephn/a
Canonical1 product
- ubuntu_linuxEOL16.04 | 18.10 | 19.04
Ceph1 product
- civetweb< 1.11
Ubuntu1 product
- ceph< 10.2.11-0ubuntu0.16.04.1 | < 12.2.11-0ubuntu0.18.04.2
4 vendors · 4 products
References
6 links- bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3821X Refsource CONFIRMIssue TrackingThird Party Advisory