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Vulnerability · Published Nov 23, 2020 · Assigned by redhat

CVE-2020-25660

High 8.8

In plain English

A high-severity security flaw in ceph. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 64% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)8.8High
Exploit odds (30 days)1.0%top 36.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12ceph14.2.15-1DEBIAN-CVE-2020-25660
Debian:13ceph14.2.15-1DEBIAN-CVE-2020-25660
Debian:14ceph14.2.15-1DEBIAN-CVE-2020-25660

Affected products (as reported)

VendorProductVersions
n/a ceph All ceph versions before 15.2.6 and before 14.2.14

Weakness: CWE-294

References