CVE-2020-17516
Authentication Bypass in Apache Cassandra
7.5
HIGH
CVSS 3.1
EPSS 0.85%
Description
Apache Cassandra versions 2.1.0 to 2.1.22, 2.2.0 to 2.2.19, 3.0.0 to 3.0.23, and 3.11.0 to 3.11.9, when using 'dc' or 'rack' internode_encryption setting, allows both encrypted and unencrypted internode connections. A misconfigured node or a malicious user can use the unencrypted connection despite not being in the same rack or dc, and bypass mutual TLS requirement.
How to fix CVE-2020-17516
To remediate CVE-2020-17516, upgrade the affected package to a fixed version below.
- —upgrade to 2.1.23 or later
- —upgrade to 3.0.24 or later
Is CVE-2020-17516 being exploited?
Low — EPSS is 0.9%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- >= 2.1.0, < 2.1.23, >= 2.2.0, < 2.2.20, >= 3.0.0, < 3.0.24, >= 3.11.0, < 3.11.10
- >= 2.1.0, < 3.0.24
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |