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TI-2020-15677 Aliases CVE-2020-25660GHSA-457q-vj84-7r8r

Authentication bypass by capture-replay in ceph

Priority MEDIUM 40CWE-294Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 7 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-294.

Summary

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.

Why it matters now

EPSS 0.01034 64th percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 7 fixed, 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—cephAll ceph versions before 15.2.6 and before 14.2.14—No fix listedCNA
  • ceph Vendor— Affected All ceph versions before 15.2.6 and before 14.2.14 Fixed in — No fix listed CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:redhat:ceph:*:*:*:*:*:*:*:*before 14.2.14; 15.0.0 to before 15.2.6VulnerableRed Hat
cpe:2.3:a:redhat:ceph_storage:2.0:*:*:*:*:*:*:*2.0VulnerableRed Hat
cpe:2.3:a:redhat:ceph_storage:4.0:*:*:*:*:*:*:*4.0VulnerableRed Hat
cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*4.0VulnerableRed Hat
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*33VulnerableFedoraproject
  • cpe:2.3:a:redhat:ceph:*:*:*:*:*:*:*:* Versions before 14.2.14; 15.0.0 to before 15.2.6 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:ceph_storage:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:ceph_storage:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject

Remediation

Red Hat 2 advisories

  • RHSA-2021:0081 Released 2021-01-12 · Red Hat rating Important
    Red Hat Ceph Storage 4.2 Security and Bug Fix update
    • Red Hat Ceph Storage 4.2 MON ceph-2:14.2.11-95.el7cp, ceph-2:14.2.11-95.el8cp, ceph-base-2:14.2.11-95.el7cp +47
    • Red Hat Ceph Storage 4.2 OSD ceph-2:14.2.11-95.el7cp, ceph-2:14.2.11-95.el8cp, ceph-base-2:14.2.11-95.el7cp +39
    • Red Hat Ceph Storage 4.2 Tools ceph-2:14.2.11-95.el7cp, ceph-2:14.2.11-95.el8cp, ceph-ansible-4.0.41-1.el7cp +47
  • RHSA-2020:5325 Released 2020-12-02 · Red Hat rating Moderate
    Red Hat Ceph Storage 4.1 security and bug fix update
    • Red Hat Ceph Storage 4.1 MON ceph-2:14.2.8-115.el7cp, ceph-2:14.2.8-115.el8cp, ceph-base-2:14.2.8-115.el7cp +47
    • Red Hat Ceph Storage 4.1 OSD ceph-2:14.2.8-115.el7cp, ceph-2:14.2.8-115.el8cp, ceph-base-2:14.2.8-115.el7cp +39
    • Red Hat Ceph Storage 4.1 Tools ceph-2:14.2.8-115.el7cp, ceph-2:14.2.8-115.el8cp, ceph-base-2:14.2.8-115.el7cp +47

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Ceph Storage 2AffectedNo fix planned: Out of support scope
Red Hat Openshift Container Storage 4AffectedNo fix planned: Out of support scope
Red Hat Ceph Storage 4.1 MONFixed RHSA-2020:5325
Red Hat Ceph Storage 4.1 OSDFixed RHSA-2020:5325
Red Hat Ceph Storage 4.1 ToolsFixed RHSA-2020:5325
Red Hat Ceph Storage 4.2 MONFixed RHSA-2021:0081
Red Hat Ceph Storage 4.2 OSDFixed RHSA-2021:0081
Red Hat Ceph Storage 4.2 ToolsFixed RHSA-2021:0081
Red Hat OpenShift Container Storage 4.6 on RHEL-8Fixed—
Not affected: 7 products
  • Red Hat Ceph Storage 3
  • Red Hat Ceph Storage 4.2 MON
  • Red Hat Ceph Storage 4.2 Tools
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat OpenStack Platform 13 (Queens)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-25660
  2. 2026-10-03 Alias added: GHSA-457q-vj84-7r8r

References

Advisory 5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences