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

This month

MEDIUM 6.5WATCHLISTMITIGATEDOWNGRADEMITIGATE

CVE-2020-1700 is a medium-severity flaw (CVSS 6.5) affecting ceph, openshift container storage, leap. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Weakness	CWE-400
Published	2020-02-07
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: canonical · ceph · opensuse · redhat

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-02-07 21:15 UTCPublished CVE record published
2026-06-17 03:02 UTCUpdated Record last modified

ceph ceph MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ceph || rpm -q ceph || ceph --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

redhat openshift container storage DOWNGRADE

Affected: 4.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.2

1. Check installed version

apt-cache policy openshift-container-storage || rpm -q openshift-container-storage || openshift-container-storage --version

2. No fixed release: DOWNGRADE to a release before 4.2 (Debian / Ubuntu)

apt-cache madison openshift-container-storage sudo apt install openshift-container-storage=<VERSION_BEFORE_4.2> sudo apt-mark hold openshift-container-storage

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list openshift-container-storage sudo dnf downgrade openshift-container-storage-<VERSION_BEFORE_4.2> sudo dnf versionlock add openshift-container-storage

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

opensuse leap MITIGATE

Affected: 15.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 15.1

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

canonical ubuntu linux MITIGATE

Affected: 18.04 · 19.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 18.04

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-1700?

ceph: mitigate or apply the listed mitigation; openshift container storage: downgrade or apply the listed mitigation; leap: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-1700 being exploited?

CVE-2020-1700 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-1700 affect?

CVE-2020-1700 affects ceph, openshift container storage, leap. Severity is medium (CVSS 6.5). 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. T

How urgent is CVE-2020-1700?

Priority 49/100. On your watchlist

Software pages

Ubuntu vulnerabilities · Red Hat OpenShift vulnerabilities · Ceph vulnerabilities

Related CVEs

CVE-2024-47866 HIGH 7.5 UPGRADE Ceph is a distributed object, block, and file storage platform
CVE-2022-3650 HIGH 7.8 DOWNGRADE A privilege escalation flaw was found in Ceph
CVE-2022-0670 CRITICAL 9.1 UPGRADE UPGRADE A flaw was found in Openstack manilla owning a Ceph File system "share", which enables the owner to read/write
CVE-2021-3531 MEDIUM 5.3 UPGRADE DOWNGRADE A flaw was found in the Red Hat Ceph Storage RGW in versions before 14.2.21
CVE-2021-3524 MEDIUM 6.5 UPGRADE DOWNGRADE A flaw was found in the Red Hat Ceph Storage RadosGW (Ceph Object Gateway) in versions before 14.2.21

References

← Back to latest CVEs