Vulnerability in Apache Cassandra
CVE-2020-17516
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.020 (80.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.020 · change: +0.000
Affected products
- Apache Cassandra
- Apache Cassandra — versions 2.1.0 to 2.1.22, 2.2.0 to 2.2.19, 3.0.0 to 3.0.23
Weakness classification (CWE)
Public proof-of-concept exploits
References
- mail-archives.apache.org/mod_mbox/cassandra-user/202102.mbox/<6E4340A5-D7BE-4D3…
- lists.apache.org/thread.html/rd84bec24907617bdb72f7ec907cd7437a0fd5a8886eb55aa8… (mailing-list)
- security.netapp.com/advisory/ntap-20210521-0002/ (Mailing List, Third Party Advisory)
- lists.apache.org/thread.html/rcb16f36cafa184dd159e94033f87d0fc274c4752d467f3a09… (mailing-list)
- lists.apache.org/thread.html/r81243a412a37a22211754936a13856af07cc68a93d728c528… (mailing-list)
Frequently asked questions
- What is CVE-2020-17516?
- CVE-2020-17516 is a high-severity vulnerability in Apache Cassandra, classified under Authentication Bypass by Spoofing. CVSS score: 7.5/10. Published 2021-02-03.
- How severe is CVE-2020-17516?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-17516 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.