CVE-2020-25660 Details

CVE-2020-25660

Published: 2020-11-23
Last Modified: 2021-05-28
CVE Author: NIST National Vulnerability Database
CVE Assigner: secalert@redhat.com
Summary

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.

Analysis
Common Vulnerability Score System v2.0
Severity Medium
Base Score 5.8/10
Exploit Score 6.5/10
Access Vector Adjacent_network
Access Complexity Low
Authentication None
Impact Score 6.4/10
Confidentiality Impact Partial
Availability Impact Partial
Integrity Impact Partial
Vector String AV:A/AC:L/Au:N/C:P/I:P/A:P
Common Vulnerability Score System v3.1
Severity High
Base Score 8.8/10
Exploit Score 2.8/10
Access Vector Adjacent_network
Access Complexity Low
Privileges Required None
Impact Score 5.9/10
Confidentiality Impact High
Availability Impact High
Integrity Impact High
Scope Unchanged
User Interaction None
Vector String CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Products Reported
CPE Vulnerable Start Excluding
cpe:2.3:a:redhat:ceph:*:*:*:*:*:*:*:* Yes - 14.2.14
cpe:2.3:a:redhat:ceph:*:*:*:*:*:*:*:* Yes 15.0.0 15.2.6
cpe:2.3:a:redhat:ceph_storage:2.0:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:redhat:ceph_storage:4.0:*:*:*:*:*:*:* Yes - -
cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*: Yes - -
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Yes - -
References

https://bugzilla.redhat.com/show_bug.cgi?id=1890354
https://ceph.io/community/v15-2-6-octopus-released/
https://ceph.io/releases/v14-2-14-nautilus-released/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/m
https://security.gentoo.org/glsa/202105-39

CVE ID
CVE-2020-25660
Published
2020-11-23
Modified
2021-05-28
CVSSv2.0
Medium
CVSSv3.1
High
PCI Compliance
Fail
US-CERT Alert
No
CWE
CWE-294

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