NVD / CVE Program· CNA redhat

CVE-2020-1700: A flaw was found in the way the Ceph RGW Beast front-end handles unexpected disconnects.

Noroxi assessment

Priority: Monitor (action score 27/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 2.4% (FIRST EPSS); higher than 84.3% of all records.
Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
Fixed version: ceph (Debian:10) 12.2.11+dfsg1-2.1+deb10u1; ceph (Debian:12) 14.2.7-1; ceph (openSUSE:Leap 15.1) 14.2.5.382+g8881d33957-lp151.2.10.1.

Low priority for now. Upgrade to ceph (Debian:10) 12.2.11+dfsg1-2.1+deb10u1; ceph (Debian:12) 14.2.7-1; ceph (openSUSE:Leap 15.1) 14.2.5.382+g8881d33957-lp151.2.10.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A flaw was found in the way the Ceph RGW Beast front-end handles unexpected disconnects. An authenticated attacker can abuse this flaw by making multiple disconnect attempts resulting in a permanent leak of a socket connection by radosgw. This flaw could lead to a denial of service condition by pile up of CLOSE_WAIT sockets, eventually leading to the exhaustion of available resources, preventing legitimate users from connecting to the system.

MediumCVSS 6.5 · v3.1—No exploit Fix available

Denial of service

Published: Feb 7, 2020
Updated: Jun 16, 2026
EPSS: 2.4% · 84th percentile
CWE: CWE-400

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 26 / 40 · 6.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 1 / 30 · 2.4%

CNA vs NVD score

NVD: 6.5
CNA · redhat: 6.5; agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
ceph	ceph	cpe:2.3:a:ceph:ceph
redhat	openshift container storage	cpe:2.3:a:redhat:openshift_container_storage
opensuse	leap	cpe:2.3:o:opensuse:leap
canonical	ubuntu linux	cpe:2.3:o:canonical:ubuntu_linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

canonical ubuntu linux18.04
canonical ubuntu linux19.10
ceph cephall versions
opensuse leap15.1
redhat openshift container storage4.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

[UNKNOWN] ceph
- 14.2.4-125.el8cp, 14.2.4-51.el7cpaffected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:10	ceph	before 12.2.11+dfsg1-2.1+deb10u1	12.2.11+dfsg1-2.1+deb10u1
Debian:12	ceph	before 14.2.7-1	14.2.7-1
openSUSE:Leap 15.1	ceph	before 14.2.5.382+g8881d33957-lp151.2.10.1	14.2.5.382+g8881d33957-lp151.2.10.1
openSUSE:Leap 15.1	ceph-test	before 14.2.5.382+g8881d33957-lp151.2.10.1	14.2.5.382+g8881d33957-lp151.2.10.1
SUSE:Linux Enterprise Module for Basesystem 15 SP1	ceph	before 14.2.5.382+g8881d33957-3.30.1	14.2.5.382+g8881d33957-3.30.1

Same product

ceph: all records

Other highest-scoring records for the same primary product.

CVE-2026-50152Ceph Monitor subscription handler improperly authorizes config-key store reads, exposing cluster secrets to read-only users
36Monitor
CVE-2025-30156Ceph: AES-CBC misuse in CephX and RADOSGW enables authentication bypass and credential forgery
35Monitor
CVE-2026-39944Ceph: CephX AES Authentication error
35Monitor

Published before and after this one in the same product

← EarlierCVE-2017-7519Jul 27, 2018 · In Ceph, a format string flaw was found in the way libradosstriper parses input from user.
17Monitor
← EarlierCVE-2019-10222Nov 8, 2019 · A flaw was found in the Ceph RGW configuration with Beast as the front end handling client requests.
31Monitor
Later →CVE-2025-52555Jun 26, 2025 · CephFS Permission Escalation Vulnerability in Ceph Fuse mounted FS
26Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
debian:ceph	14.2.7-1 · Debian:12	Package registry (OSV)
opensuse:ceph	14.2.5.382+g8881d33957-lp151.2.10.1 · openSUSE:Leap 15.1	Package registry (OSV)
opensuse:ceph-test	14.2.5.382+g8881d33957-lp151.2.10.1 · openSUSE:Leap 15.1	Package registry (OSV)
suse:ceph	14.2.5.382+g8881d33957-3.30.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP1	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
A low-privileged account is enough.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: none
Availability: high · the service can be disrupted

Attack vector: Network
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: None
Availability impact: High

Weakness class (CWE)

CWE-400 · Uncontrolled Resource Consumption

CVSS vector

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

nvd-primary

Root cause

Code that parses nested structures sets no depth or size limit. A small input can turn into a disproportionate processing load.

The bug in code

The whole CWE-400 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1function expand(node) {
2  return node.children.map(expand);
3}

Fixed

1const MAX_DEPTH = 32;
2function expand(node, depth = 0) {
3  if (depth > MAX_DEPTH) throw new Error("too deep");
4  return node.children.map((c) => expand(c, depth + 1));
5}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

Endpoint Denial of ServiceT1499

Change log

Fix✗ → ✓Sep 28, 2026, 10:47 PM UTC

For records you follow, these changes also arrive as notifications. →

References

lists.opensuse.org/opensuse-security-announce/2020-02/msg00009.html

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records