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cve[email protected]CVE-2020-25660
HistoryNov 23, 2020 - 10:15 p.m.

CVE-2020-25660

2020-11-2322:15:12
CWE-294
web.nvd.nist.gov
236
2
cve-2020-25660
ceph
authentication protocol
replay attacks
vulnerability
nautilus
packet sniffer
msgr2 protocol
confidentiality
integrity
system availability

5.8 Medium

CVSS2

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

8.8 High

CVSS3

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

6.9 Medium

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

60.2%

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

Vulners
NVD
Node
cephcephRange15.2.6
OR
cephcephRange14.2.14
VendorProductVersionCPE
cephceph*cpe:2.3:a:ceph:ceph:*:*:*:*:*:*:*:*
cephceph*cpe:2.3:a:ceph:ceph:*:*:*:*:*:*:*:*

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

5.8 Medium

CVSS2

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

8.8 High

CVSS3

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

6.9 Medium

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

60.2%