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cveRedhatCVE-2020-25660
HistoryNov 23, 2020 - 10:15 p.m.

CVE-2020-25660

2020-11-2322:15:12
CWE-294
redhat
web.nvd.nist.gov
246
2
cve-2020-25660
ceph
authentication protocol
replay attacks
vulnerability
nautilus
packet sniffer
msgr2 protocol
confidentiality
integrity
system availability

CVSS2

5.8

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:A/AC:L/Au:N/C:P/I:P/A:P

CVSS3

8.8

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

6.9

Confidence

High

EPSS

0.002

Percentile

60.4%

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 configurations

Nvd
Vulners
Node
redhatcephRange<14.2.14
OR
redhatcephRange15.0.015.2.6
Node
redhatceph_storageMatch2.0
OR
redhatceph_storageMatch4.0
OR
redhatopenshift_container_platformMatch4.0
Node
fedoraprojectfedoraMatch33
VendorProductVersionCPE
redhatceph*cpe:2.3:a:redhat:ceph:*:*:*:*:*:*:*:*
redhatceph_storage2.0cpe:2.3:a:redhat:ceph_storage:2.0:*:*:*:*:*:*:*
redhatceph_storage4.0cpe:2.3:a:redhat:ceph_storage:4.0:*:*:*:*:*:*:*
redhatopenshift_container_platform4.0cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*
fedoraprojectfedora33cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

CNA Affected

[
  {
    "product": "ceph",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "All ceph versions before 15.2.6 and before 14.2.14"
      }
    ]
  }
]

Social References

More

CVSS2

5.8

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:A/AC:L/Au:N/C:P/I:P/A:P

CVSS3

8.8

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

6.9

Confidence

High

EPSS

0.002

Percentile

60.4%