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CVE-2020-17516 (GCVE-0-2020-17516)

Vulnerability from cvelistv5 – Published: 2021-02-03 16:40 – Updated: 2024-08-04 14:00
VLAI
Summary
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.
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Impacted products
Vendor Product Version CPE status
n/a Apache Cassandra Affected: 2.1.0 to 2.1.22
Affected: 2.2.0 to 2.2.19
Affected: 3.0.0 to 3.0.23
Affected: 3.11.0 to 3.11.9
Show details on NVD website

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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.\"},{\"lang\":\"es\",\"value\":\"Apache Cassandra versiones 2.1.0 hasta 2.1.22, versiones 2.2.0 hasta 2.2.19, versiones 3.0.0 hasta 3.0.23 y versiones 3.11.0 hasta 3.11.9, cuando se usa la configuraci\u00f3n internode_encryption de \\\"dc\\\" o \\\"rack\\\", permite ambas conexiones de entre nodo cifradas y no cifradas.\u0026#xa0;Un nodo configurado inapropiadamente o un usuario malicioso pueden usar la conexi\u00f3n no cifrada a pesar de no estar en el mismo rack o dc y omitir el requisito mutuo de TLS\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:P/I:N/A:N\",\"baseScore\":4.3,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"security@apache.org\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-290\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-290\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:cassandra:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.1.0\",\"versionEndIncluding\":\"2.1.22\",\"matchCriteriaId\":\"B61EDD10-0909-46EF-9CF9-4864CDA49303\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:cassandra:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.2.0\",\"versionEndIncluding\":\"2.2.19\",\"matchCriteriaId\":\"8F5E166F-E5BE-436B-9A29-03C93F7921FD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:cassandra:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.0.0\",\"versionEndIncluding\":\"3.0.23\",\"matchCriteriaId\":\"B8DDE4AE-9B3A-40FE-ADBA-821B71CB939B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:cassandra:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.11.0\",\"versionEndIncluding\":\"3.11.9\",\"matchCriteriaId\":\"A98515B9-8285-4428-BE7B-292829D7D329\"}]}]}],\"references\":[{\"url\":\"http://mail-archives.apache.org/mod_mbox/cassandra-user/202102.mbox/%3c6E4340A5-D7BE-4D33-9EC5-3B505A626D8D%40apache.org%3e\",\"source\":\"security@apache.org\"},{\"url\":\"https://lists.apache.org/thread.html/r81243a412a37a22211754936a13856af07cc68a93d728c52807486e9%40%3Ccommits.cassandra.apache.org%3E\",\"source\":\"security@apache.org\"},{\"url\":\"https://lists.apache.org/thread.html/rcb16f36cafa184dd159e94033f87d0fc274c4752d467f3a09f2ceae4%40%3Ccommits.cassandra.apache.org%3E\",\"source\":\"security@apache.org\"},{\"url\":\"https://lists.apache.org/thread.html/rd84bec24907617bdb72f7ec907cd7437a0fd5a8886eb55aa84dd1eb8%40%3Ccommits.cassandra.apache.org%3E\",\"source\":\"security@apache.org\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20210521-0002/\",\"source\":\"security@apache.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://mail-archives.apache.org/mod_mbox/cassandra-user/202102.mbox/%3c6E4340A5-D7BE-4D33-9EC5-3B505A626D8D%40apache.org%3e\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.apache.org/thread.html/r81243a412a37a22211754936a13856af07cc68a93d728c52807486e9%40%3Ccommits.cassandra.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.apache.org/thread.html/rcb16f36cafa184dd159e94033f87d0fc274c4752d467f3a09f2ceae4%40%3Ccommits.cassandra.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.apache.org/thread.html/rd84bec24907617bdb72f7ec907cd7437a0fd5a8886eb55aa84dd1eb8%40%3Ccommits.cassandra.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20210521-0002/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T21:43:28+00:00",
      "cve": "CVE-2020-17516",
      "id": "CVE-2020-17516",
      "initial_release_date": "2020-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "3",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "cassandra: internode encryption enforcement vulnerability",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-17516.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2025-04-25T05:23:16Z",
      "cve": "CVE-2020-17516",
      "id": "CVE-2020-17516",
      "initial_release_date": "2023-02-15T03:55:31Z",
      "product_status:recommended": "250",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2020-17516",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2020-17516.json",
      "version": "8"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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