CVE-2020-25660

Advisory lineage Upstream: 0 Downstream: 12
Modified
Published: 23 Nov 2020, 21:18
Last modified:04 Aug 2024, 15:40

Vulnerability Summary

Overall Risk (default)
medium
35/100
CVSS Score
8.8 HIGH
v3.1 (nvd)
EPSS Score
0.19% LOW
0% probability -0.08%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

23 Nov 2020, 21:18
Published
Vulnerability first disclosed
04 Aug 2024, 15:40
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 8.8CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 5.8AV:A/AC:L/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 0.19%• Percentile: 41%

Techniques & Countermeasures

  • CWE-294•Authentication Bypass by Capture-replay

    A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes).

Affected Systems

  • fedoraproject•fedora

    33

  • redhat•ceph

    < 14.2.14 | ≥ 15.0.0, < 15.2.6

  • redhat•ceph_storage

    2.0 | 4.0

  • redhat•openshift_container_platform

    4.0

References (5)