CVE & CISA-KEV Catalog

CVE-2020-25660

HIGH
8.8
CVSS v3
NVD

Description

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.

CWE-294

How to fix

Remediation Available
cephDebian
Fixed in:14.2.15-1CVE-2020-25660
Fixed in:14.2.15-1CVE-2020-25660
Fixed in:14.2.15-1CVE-2020-25660
Fixed in:14.2.15-1CVE-2020-25660
cephUbuntu
Fixed in:15.2.7-0ubuntu0.20.04.2USN-4706-1
ceph-baseUbuntu
Fixed in:15.2.7-0ubuntu0.20.04.2USN-4706-1
ceph-commonUbuntu
Fixed in:15.2.7-0ubuntu0.20.04.2USN-4706-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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

Exploit Intelligence

1.02%probability of exploitation in 30 days
59thpercentile

Moderate risk: more likely to be exploited than 59% of all known CVEs.

References

Vendor Advisory2
Other references1
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.