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Fencer Intel
medium 6.5

CVE-2020-1700 json

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

published 6y ago modified 4mo ago also EUVD-2020-12556

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 84%
public exploits
0
none known

Summary

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.

Patch / fix

  • ceph Debian 14, Debian 13, Debian 12 14.2.7-1

debian advisories DEBIAN-CVE-2020-1700

  • ceph Ubuntu 18.04 LTS 12.2.12-0ubuntu0.18.04.5

ubuntu advisories UBUNTU-CVE-2020-1700

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • ceph SLE Module for Basesystem 15 SP1, Enterprise Storage 6 14.2.5.382+g8881d33957-3.30.1

suse advisories SUSE-SU-2020:0296-1

  • ceph openSUSE Leap 15.1 14.2.5.382+g8881d33957-lp151.2.10.1
  • ceph-test openSUSE Leap 15.1 14.2.5.382+g8881d33957-lp151.2.10.1

opensuse advisories openSUSE-SU-2020:0187-1

  • ceph Alpine 3.16, Alpine 3.15, Alpine 3.14 +4 more 14.2.7-r0
  • ceph16 Alpine 3.18, Alpine 3.17 14.2.7-r0

alpine advisories ALPINE-CVE-2020-1700

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2020-1700 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-1700 updated cvss 6.5

ceph: connection leak in the RGW Beast front-end permits a DoS against the RGW server

  • Red Hat Ceph Storage 2 ceph, librbd1, librgw2, ceph-mds, ceph-mon, ceph-osd, +12 more Red Hat Openshift Container Storage 4 ceph
    affected: workaround, no fix planned “If Beast front end is in use, switch to CivetWeb to mitigate the issue. The following is an example of the /etc/ceph/ceph.conf file: <snip> ... [client.rgw.node1] rgw frontends = civetweb ... </snip>”
  • Red Hat Ceph Storage 3 ceph, librbd1, librgw2, ceph-mds, ceph-mgr, ceph-mon, +15 more Red Hat Ceph Storage 4 ceph, librbd1, librgw2, rbd-nbd, ceph-mds, ceph-mgr, +27 more Red Hat Enterprise Linux 7 librbd1, librados2, python-rbd, ceph-common, python-rados Red Hat Enterprise Linux 8 librbd1, librados2, libcephfs2, libradosstriper1 Red Hat OpenStack Platform 13 (Queens) librbd1, librgw2, ceph-fuse, librados2, libcephfs2, python-rbd, +6 more Red Hat OpenStack Platform 15 (Stein) librbd1, librgw2, librados2, libcephfs2, ceph-common, python3-rbd, +5 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.44% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 6.8 AV:N/AC:L/Au:S/C:N/I:N/A:C

Affected products

  • [UNKNOWN] ceph

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.