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NVD / CVE Program· CNA redhat

CVE-2020-25660: A flaw was found in the Cephx authentication protocol in versions before 15.2.6 and before 14.2.14, where it does not verify Ceph clients co

Noroxi assessment

Priority: Monitor (action score 35/100)

  • 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: 1% (FIRST EPSS); higher than 63.8% of all records.
  • Someone on the same network segment can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: ceph (Debian:12) 14.2.15-1; ceph (openSUSE:Leap 15.1) 14.2.13.450+g65ea1b614d-lp151.2.28.1; ceph-test (openSUSE:Leap 15.1) 14.2.13.450+g65ea1b614d-lp151.2.28.1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to ceph (Debian:12) 14.2.15-1; ceph (openSUSE:Leap 15.1) 14.2.13.450+g65ea1b614d-lp151.2.28.1; ceph-test (openSUSE:Leap 15.1) 14.2.13.450+g65ea1b614d-lp151.2.28.1 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 Cephx authentication protocol in versions before 15.2.6 and before 14.2.14, where it does not verify Ceph clients correctly and is then vulnerable to replay attacks in Nautilus. This flaw allows an attacker with access to the Ceph cluster network to authenticate with the Ceph service via a packet sniffer and perform actions allowed by the Ceph service. This issue is a reintroduction of CVE-2018-1128, affecting the msgr2 protocol. The msgr 2 protocol is used for all communication except older clients that do not support the msgr2 protocol. The msgr1 protocol is not affected. The highest threat from this vulnerability is to confidentiality, integrity, and system availability.

HighCVSS 8.8 · v3.1—No exploit Fix available
Published
Nov 23, 2020
Updated
Jun 16, 2026
EPSS
1.0% · 63th percentile

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.0%

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

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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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.

VendorProduct
redhatceph
redhatceph storage
redhatopenshift container platform
fedoraprojectfedora

Affected versions

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

  • fedoraproject fedora33
  • redhat cephbefore 14.2.14
  • redhat ceph15.0.0 and later · before 15.2.6
  • redhat ceph storage2.0
  • redhat ceph storage4.0
  • redhat openshift container platform4.0

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.

  • n/a ceph

    • All ceph versions before 15.2.6 and before 14.2.14affected

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12cephbefore 14.2.15-114.2.15-1
openSUSE:Leap 15.1cephbefore 14.2.13.450+g65ea1b614d-lp151.2.28.114.2.13.450+g65ea1b614d-lp151.2.28.1
openSUSE:Leap 15.1ceph-testbefore 14.2.13.450+g65ea1b614d-lp151.2.28.114.2.13.450+g65ea1b614d-lp151.2.28.1
openSUSE:Leap 15.2cephbefore 15.2.5.667+g1a579d5bf2-lp152.2.3.115.2.5.667+g1a579d5bf2-lp152.2.3.1
openSUSE:Leap 15.2ceph-testbefore 15.2.5.667+g1a579d5bf2-lp152.2.3.115.2.5.667+g1a579d5bf2-lp152.2.3.1
openSUSE:Tumbleweedcephbefore 16.2.6.463+g22e7612f9ad-1.116.2.6.463+g22e7612f9ad-1.1
Red Hat:ceph_storage:4::el7cephbefore 2:14.2.11-95.el7cp2:14.2.11-95.el7cp
Red Hat:ceph_storage:4::el7cephbefore 2:14.2.8-115.el7cp2:14.2.8-115.el7cp
Red Hat:ceph_storage:4::el7ceph-ansiblebefore 0:4.0.41-1.el7cp0:4.0.41-1.el7cp
Red Hat:ceph_storage:4::el7ceph-basebefore 2:14.2.11-95.el7cp2:14.2.11-95.el7cp
Red Hat:ceph_storage:4::el7ceph-basebefore 2:14.2.8-115.el7cp2:14.2.8-115.el7cp
Red Hat:ceph_storage:4::el7ceph-commonbefore 2:14.2.8-115.el7cp2:14.2.8-115.el7cp
Red Hat:ceph_storage:4::el7ceph-commonbefore 2:14.2.11-95.el7cp2:14.2.11-95.el7cp
Red Hat:ceph_storage:4::el7ceph-debuginfobefore 2:14.2.8-115.el7cp2:14.2.8-115.el7cp
Red Hat:ceph_storage:4::el7ceph-debuginfobefore 2:14.2.11-95.el7cp2:14.2.11-95.el7cp
Red Hat:ceph_storage:4::el7ceph-fusebefore 2:14.2.8-115.el7cp2:14.2.8-115.el7cp
Red Hat:ceph_storage:4::el7ceph-fusebefore 2:14.2.11-95.el7cp2:14.2.11-95.el7cp
Red Hat:ceph_storage:4::el7ceph-grafana-dashboardsbefore 2:14.2.8-115.el7cp2:14.2.8-115.el7cp
Red Hat:ceph_storage:4::el7ceph-grafana-dashboardsbefore 2:14.2.11-95.el7cp2:14.2.11-95.el7cp
Red Hat:ceph_storage:4::el7ceph-mdsbefore 2:14.2.8-115.el7cp2:14.2.8-115.el7cp
Red Hat:ceph_storage:4::el7ceph-mdsbefore 2:14.2.11-95.el7cp2:14.2.11-95.el7cp
Red Hat:ceph_storage:4::el7ceph-mgrbefore 2:14.2.8-115.el7cp2:14.2.8-115.el7cp
Red Hat:ceph_storage:4::el7ceph-mgrbefore 2:14.2.11-95.el7cp2:14.2.11-95.el7cp
Red Hat:ceph_storage:4::el7ceph-mgr-dashboardbefore 2:14.2.8-115.el7cp2:14.2.8-115.el7cp

+96

Same product

redhat: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-3650A privilege escalation flaw was found in Ceph.
    31Monitor
  • CVE-2018-7262In Ceph before 12.2.3 and 13.x through 13.0.1, the rgw_civetweb.cc RGWCivetWeb::init_env function in radosgw doesn't handle malformed HTTP h
    31Monitor
  • CVE-2024-47866RGW DoS attack with empty HTTP header in S3 object copy
    30Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2018-14662Jan 15, 2019 · It was found Ceph versions before 13.2.4 that authenticated ceph users with read only permissions could steal dm-crypt encryption keys used
    22Monitor
  • ← EarlierCVE-2018-16889Jan 28, 2019 · Ceph does not properly sanitize encryption keys in debug logging for v4 auth.
    30Monitor
  • Later →CVE-2020-27781Dec 18, 2020 · User credentials can be manipulated and stolen by Native CephFS consumers of OpenStack Manila, resulting in potential privilege escalation.
    28Monitor

Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
debian:ceph14.2.15-1 · Debian:12Package registry (OSV)
opensuse:ceph14.2.13.450+g65ea1b614d-lp151.2.28.1 · openSUSE:Leap 15.1Package registry (OSV)
opensuse:ceph-test14.2.13.450+g65ea1b614d-lp151.2.28.1 · openSUSE:Leap 15.1Package registry (OSV)
red hat:ceph2:14.2.8-115.el7cp · Red Hat:ceph_storage:4::el7Package registry (OSV)
red hat:ceph-base2:14.2.8-115.el7cp · Red Hat:ceph_storage:4::el7Package registry (OSV)
red hat:ceph-common2:14.2.8-115.el7cp · Red Hat:ceph_storage:4::el7Package registry (OSV)
red hat:ceph-debuginfo2:14.2.8-115.el7cp · Red Hat:ceph_storage:4::el7Package registry (OSV)
red hat:ceph-grafana-dashboards2:14.2.8-115.el7cp · Red Hat:ceph_storage:4::el7Package registry (OSV)
red hat:ceph-mgr2:14.2.8-115.el7cp · Red Hat:ceph_storage:4::el7Package registry (OSV)
red hat:ceph-mgr-dashboard2:14.2.8-115.el7cp · Red Hat:ceph_storage:4::el7Package registry (OSV)
red hat:ceph-mgr-diskprediction-local2:14.2.8-115.el7cp · Red Hat:ceph_storage:4::el7Package registry (OSV)
red hat:ceph-mgr-k8sevents2:14.2.8-115.el7cp · Red Hat:ceph_storage:4::el7Package registry (OSV)
red hat:ceph-mgr-rook2:14.2.8-115.el7cp · Red Hat:ceph_storage:4::el7Package registry (OSV)
red hat:ceph-mon2:14.2.8-115.el7cp · Red Hat:ceph_storage:4::el7Package registry (OSV)
red hat:ceph-selinux2:14.2.8-115.el7cp · Red Hat:ceph_storage:4::el7Package registry (OSV)
suse:ceph14.2.13.450+g65ea1b614d-3.52.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP1Package 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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone on the same network segment can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Adjacent
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-294 · Authentication Bypass by Capture-replay

CVSS vector

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

nvd-primary

Attack context

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

Change log

  1. Fix✗ → ✓

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

References

Show all references (4 more)

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

All records