Vulnerability-Lookup

GSD-2018-16886

Vulnerability from gsd - Updated: 2023-12-13 01:22

Details

etcd versions 3.2.x before 3.2.26 and 3.3.x before 3.3.11 are vulnerable to an improper authentication issue when role-based access control (RBAC) is used and client-cert-auth is enabled. If an etcd client server TLS certificate contains a Common Name (CN) which matches a valid RBAC username, a remote attacker may authenticate as that user with any valid (trusted) client certificate in a REST API request to the gRPC-gateway.

Aliases

CVE-2018-16886

Aliases

CVE-2018-16886

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2018-16886",
    "description": "etcd versions 3.2.x before 3.2.26 and 3.3.x before 3.3.11 are vulnerable to an improper authentication issue when role-based access control (RBAC) is used and client-cert-auth is enabled. If an etcd client server TLS certificate contains a Common Name (CN) which matches a valid RBAC username, a remote attacker may authenticate as that user with any valid (trusted) client certificate in a REST API request to the gRPC-gateway.",
    "id": "GSD-2018-16886",
    "references": [
      "https://www.suse.com/security/cve/CVE-2018-16886.html",
      "https://access.redhat.com/errata/RHSA-2019:1352"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2018-16886"
      ],
      "details": "etcd versions 3.2.x before 3.2.26 and 3.3.x before 3.3.11 are vulnerable to an improper authentication issue when role-based access control (RBAC) is used and client-cert-auth is enabled. If an etcd client server TLS certificate contains a Common Name (CN) which matches a valid RBAC username, a remote attacker may authenticate as that user with any valid (trusted) client certificate in a REST API request to the gRPC-gateway.",
      "id": "GSD-2018-16886",
      "modified": "2023-12-13T01:22:26.305382Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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        "ID": "CVE-2018-16886",
        "STATE": "PUBLIC"
      },
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          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
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          }
        ]
      },
      "impact": {
        "cvss": [
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            {
              "vectorString": "6.8/CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
              "version": "3.0"
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      "references": {
        "reference_data": [
          {
            "name": "https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.3.md#security-authentication",
            "refsource": "MISC",
            "url": "https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.3.md#security-authentication"
          },
          {
            "name": "106540",
            "refsource": "BID",
            "url": "http://www.securityfocus.com/bid/106540"
          },
          {
            "name": "https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.2.md#security-authentication",
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            "url": "https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.2.md#security-authentication"
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            "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16886",
            "refsource": "CONFIRM",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16886"
          },
          {
            "name": "FEDORA-2019-833466697f",
            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPGYHMSKDPW5GAMI7BEP3XQRVRLLBJKS/"
          },
          {
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            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JX7QTIT465BQGRGNCE74RATRQLKT2QE4/"
          },
          {
            "name": "RHSA-2019:1352",
            "refsource": "REDHAT",
            "url": "https://access.redhat.com/errata/RHSA-2019:1352"
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        ]
      }
    },
    "gitlab.com": {
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        {
          "affected_range": "\u003c0.5.0-alpha.5.0.20190108173120-83c051b701d3",
          "affected_versions": "All versions before 0.5.0-alpha.5.0.20190108173120-83c051b701d3",
          "cvss_v2": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-287",
            "CWE-937"
          ],
          "date": "2023-02-17",
          "description": "etcd versions 3.2.x before 3.2.26 and 3.3.x before 3.3.11 is vulnerable to an improper authentication issue when role-based access control (RBAC) is used and client-cert-auth is enabled. If an etcd client server TLS certificate contains a Common Name (CN) which matches a valid RBAC username, a remote attacker may authenticate as that user with any valid (trusted) client certificate in a REST API request to the gRPC-gateway.",
          "fixed_versions": [
            "0.5.0-alpha.5.0.20190108173120-83c051b701d3"
          ],
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          "identifiers": [
            "GHSA-h6xx-pmxh-3wgp",
            "CVE-2018-16886"
          ],
          "not_impacted": "All versions starting from 0.5.0-alpha.5.0.20190108173120-83c051b701d3",
          "package_slug": "go/go.etcd.io/etcd",
          "pubdate": "2022-04-12",
          "solution": "Upgrade to version 0.5.0-alpha.5.0.20190108173120-83c051b701d3 or above. *Note*: 0.5.0-alpha.5.0.20190108173120-83c051b701d3 may be an unstable version. Use caution.",
          "title": "Improper Authentication",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2018-16886",
            "https://github.com/etcd-io/etcd/pull/10366",
            "https://github.com/etcd-io/etcd/commit/0191509637546621d6f2e18e074e955ab8ef374d",
            "https://github.com/etcd-io/etcd/commit/bf9d0d8291dc71ecbfb2690612954e1a298154b2",
            "https://access.redhat.com/errata/RHSA-2019:0237",
            "https://access.redhat.com/errata/RHSA-2019:1352",
            "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16886",
            "https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.2.md#security-authentication",
            "https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.3.md#security-authentication",
            "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JX7QTIT465BQGRGNCE74RATRQLKT2QE4/",
            "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPGYHMSKDPW5GAMI7BEP3XQRVRLLBJKS/",
            "http://www.securityfocus.com/bid/106540",
            "https://pkg.go.dev/vuln/GO-2021-0077",
            "https://github.com/advisories/GHSA-h6xx-pmxh-3wgp"
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        },
        {
          "affected_range": "\u003e=3.2.0 \u003c3.2.26||\u003e=3.3.0 \u003c3.3.11",
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          "fixed_versions": [
            "3.2.26",
            "3.3.11"
          ],
          "identifier": "CVE-2018-16886",
          "identifiers": [
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            "CVE-2018-16886"
          ],
          "not_impacted": "All versions before 3.2.0, all versions starting from 3.2.26 before 3.3.0, all versions starting from 3.3.11",
          "package_slug": "go/go.etcd.io/etcd/v3",
          "pubdate": "2022-02-15",
          "solution": "Upgrade to versions 3.2.26, 3.3.11 or above.",
          "title": "Improper Authentication",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2018-16886",
            "https://github.com/etcd-io/etcd/pull/10366",
            "https://github.com/etcd-io/etcd/commit/0191509637546621d6f2e18e074e955ab8ef374d",
            "https://github.com/etcd-io/etcd/commit/bf9d0d8291dc71ecbfb2690612954e1a298154b2",
            "https://access.redhat.com/errata/RHSA-2019:0237",
            "https://access.redhat.com/errata/RHSA-2019:1352",
            "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16886",
            "https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.2.md#security-authentication",
            "https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.3.md#security-authentication",
            "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JX7QTIT465BQGRGNCE74RATRQLKT2QE4/",
            "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UPGYHMSKDPW5GAMI7BEP3XQRVRLLBJKS/",
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          ],
          "uuid": "1e9baec6-ddc7-45c7-afc3-2b703b6c9b28"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
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        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:etcd:etcd:*:*:*:*:*:*:*:*",
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              "name": "https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.2.md#security-authentication",
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              "name": "FEDORA-2019-219b0b0b6a",
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              "name": "RHSA-2019:1352",
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 6.8,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.2,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2019-10-24T12:24Z",
      "publishedDate": "2019-01-14T19:29Z"
    }
  }
}

CVE-2018-16886 (GCVE-0-2018-16886)

Vulnerability from cvelistv5 – Published: 2019-01-14 19:00 – Updated: 2024-08-05 10:32

Summary

Severity

6.8 (Medium)


                        
                          CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

CWE

CWE-287

Assigner

redhat redhat root

References

8 references

URL	Tags
https://github.com/etcd-io/etcd/blob/1eee465a4372…	x_refsource_MISC
http://www.securityfocus.com/bid/106540	vdb-entryx_refsource_BID
https://github.com/etcd-io/etcd/blob/1eee465a4372…	x_refsource_MISC
https://access.redhat.com/errata/RHSA-2019:0237	vendor-advisoryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…	x_refsource_CONFIRM
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://access.redhat.com/errata/RHSA-2019:1352	vendor-advisoryx_refsource_REDHAT

Impacted products

1 product

Vendor	Product	Version
The etcd Project	etcd:	Affected: versions 3.2.x before 3.2.26 and 3.3.x before 3.3.11

Date Public

2019-01-11 00:00

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-05T10:32:54.152Z",
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            "url": "https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.3.md#security-authentication"
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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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.