// For flags

CVE-2020-25660

ceph: CEPHX_V2 replay attack protection lost

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Se encontró un fallo en el protocolo de autenticación Cephx en versiones anteriores a 15.2.6 y anteriores a 14.2.14, donde no verifica los clientes de Ceph correctamente y luego es vulnerable a ataques de repetición en Nautilus. Este fallo permite a un atacante con acceso a la red del clúster Ceph autenticarse con el servicio Ceph por medio de un rastreador de paquetes y llevar a cabo acciones permitidas por el servicio Ceph. Este problema es una reintroducción del CVE-2018-1128, que afecta al protocolo msgr2. El protocolo msgr 2 se utiliza para todas las comunicaciones excepto los clientes más antiguos que no son compatibles con el protocolo msgr2. El protocolo msgr1 no está afectado. La mayor amenaza de esta vulnerabilidad es la confidencialidad, integridad y disponibilidad del sistema

A flaw was found in the Cephx authentication protocol, 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.

*Credits: N/A
CVSS Scores
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Adjacent
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-09-16 CVE Reserved
  • 2020-11-23 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-09-27 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-294: Authentication Bypass by Capture-replay
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Redhat
Search vendor "Redhat"
Ceph
Search vendor "Redhat" for product "Ceph"
< 14.2.14
Search vendor "Redhat" for product "Ceph" and version " < 14.2.14"
-
Affected
Redhat
Search vendor "Redhat"
Ceph
Search vendor "Redhat" for product "Ceph"
>= 15.0.0 < 15.2.6
Search vendor "Redhat" for product "Ceph" and version " >= 15.0.0 < 15.2.6"
-
Affected
Redhat
Search vendor "Redhat"
Ceph Storage
Search vendor "Redhat" for product "Ceph Storage"
2.0
Search vendor "Redhat" for product "Ceph Storage" and version "2.0"
-
Affected
Redhat
Search vendor "Redhat"
Ceph Storage
Search vendor "Redhat" for product "Ceph Storage"
4.0
Search vendor "Redhat" for product "Ceph Storage" and version "4.0"
-
Affected
Redhat
Search vendor "Redhat"
Openshift Container Platform
Search vendor "Redhat" for product "Openshift Container Platform"
4.0
Search vendor "Redhat" for product "Openshift Container Platform" and version "4.0"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
33
Search vendor "Fedoraproject" for product "Fedora" and version "33"
-
Affected