cve-2023-27593
Vulnerability from cvelistv5
Published
2023-03-17 19:51
Modified
2024-08-02 12:16
Severity ?
4.4 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Summary
cilium-agent container can access the host via `hostPath` mount
References
security-advisories@github.comhttps://github.com/cilium/cilium/pull/24075Third Party Advisory
security-advisories@github.comhttps://github.com/cilium/cilium/releases/tag/v1.11.15Third Party Advisory
security-advisories@github.comhttps://github.com/cilium/cilium/releases/tag/v1.12.8Third Party Advisory
security-advisories@github.comhttps://github.com/cilium/cilium/releases/tag/v1.13.1Third Party Advisory
security-advisories@github.comhttps://github.com/cilium/cilium/security/advisories/GHSA-4hc4-pgfx-3mrxThird Party Advisory
security-advisories@github.comhttps://kubernetes.io/docs/reference/access-authn-authz/rbac/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/cilium/cilium/pull/24075Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/cilium/cilium/releases/tag/v1.11.15Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/cilium/cilium/releases/tag/v1.12.8Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/cilium/cilium/releases/tag/v1.13.1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/cilium/cilium/security/advisories/GHSA-4hc4-pgfx-3mrxThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://kubernetes.io/docs/reference/access-authn-authz/rbac/Third Party Advisory
Impacted products
Vendor Product Version
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T12:16:35.919Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "https://github.com/cilium/cilium/security/advisories/GHSA-4hc4-pgfx-3mrx",
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
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            "url": "https://github.com/cilium/cilium/security/advisories/GHSA-4hc4-pgfx-3mrx"
          },
          {
            "name": "https://github.com/cilium/cilium/pull/24075",
            "tags": [
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              "x_transferred"
            ],
            "url": "https://github.com/cilium/cilium/pull/24075"
          },
          {
            "name": "https://github.com/cilium/cilium/releases/tag/v1.11.15",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/cilium/cilium/releases/tag/v1.11.15"
          },
          {
            "name": "https://github.com/cilium/cilium/releases/tag/v1.12.8",
            "tags": [
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              "x_transferred"
            ],
            "url": "https://github.com/cilium/cilium/releases/tag/v1.12.8"
          },
          {
            "name": "https://github.com/cilium/cilium/releases/tag/v1.13.1",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/cilium/cilium/releases/tag/v1.13.1"
          },
          {
            "name": "https://kubernetes.io/docs/reference/access-authn-authz/rbac/",
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://kubernetes.io/docs/reference/access-authn-authz/rbac/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "cilium",
          "vendor": "cilium",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.11.15"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.12.0, \u003c 1.12.8"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.13.0, \u003c 1.13.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.11.15, 1.12.8, and 1.13.1, an attacker with access to a Cilium agent pod can write to `/opt/cni/bin` due to a `hostPath` mount of that directory in the agent pod. By replacing the CNI binary with their own malicious binary and waiting for the creation of a new pod on the node, the attacker can gain access to the underlying node.\n\nThe issue has been fixed and the fix is available on versions 1.11.15, 1.12.8, and 1.13.1. Some workarounds are available. Kubernetes RBAC should be used to deny users and service accounts `exec` access to Cilium agent pods. In cases where a user requires `exec` access to Cilium agent pods, but should not have access to the underlying node, no workaround is possible."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 4.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-276",
              "description": "CWE-276: Incorrect Default Permissions",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-03-17T19:51:16.689Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/cilium/cilium/security/advisories/GHSA-4hc4-pgfx-3mrx",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/cilium/cilium/security/advisories/GHSA-4hc4-pgfx-3mrx"
        },
        {
          "name": "https://github.com/cilium/cilium/pull/24075",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cilium/cilium/pull/24075"
        },
        {
          "name": "https://github.com/cilium/cilium/releases/tag/v1.11.15",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cilium/cilium/releases/tag/v1.11.15"
        },
        {
          "name": "https://github.com/cilium/cilium/releases/tag/v1.12.8",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cilium/cilium/releases/tag/v1.12.8"
        },
        {
          "name": "https://github.com/cilium/cilium/releases/tag/v1.13.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cilium/cilium/releases/tag/v1.13.1"
        },
        {
          "name": "https://kubernetes.io/docs/reference/access-authn-authz/rbac/",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://kubernetes.io/docs/reference/access-authn-authz/rbac/"
        }
      ],
      "source": {
        "advisory": "GHSA-4hc4-pgfx-3mrx",
        "discovery": "UNKNOWN"
      },
      "title": "cilium-agent container can access the host via `hostPath` mount"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2023-27593",
    "datePublished": "2023-03-17T19:51:16.689Z",
    "dateReserved": "2023-03-04T01:03:53.635Z",
    "dateUpdated": "2024-08-02T12:16:35.919Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-27593\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2023-03-17T20:15:13.430\",\"lastModified\":\"2024-11-21T07:53:13.230\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.11.15, 1.12.8, and 1.13.1, an attacker with access to a Cilium agent pod can write to `/opt/cni/bin` due to a `hostPath` mount of that directory in the agent pod. By replacing the CNI binary with their own malicious binary and waiting for the creation of a new pod on the node, the attacker can gain access to the underlying node.\\n\\nThe issue has been fixed and the fix is available on versions 1.11.15, 1.12.8, and 1.13.1. Some workarounds are available. Kubernetes RBAC should be used to deny users and service accounts `exec` access to Cilium agent pods. In cases where a user requires `exec` access to Cilium agent pods, but should not have access to the underlying node, no workaround is possible.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.4,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":0.8,\"impactScore\":3.6},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-276\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"1.11.15\",\"matchCriteriaId\":\"7726ABC1-0140-46EA-ACDD-44B09826648E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.12.0\",\"versionEndExcluding\":\"1.12.8\",\"matchCriteriaId\":\"30E4F1B2-07F4-47AC-8535-553DFF9877C7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.13.0\",\"versionEndExcluding\":\"1.13.1\",\"matchCriteriaId\":\"C27C25C7-4E92-48FA-AD06-F4409E57431A\"}]}]}],\"references\":[{\"url\":\"https://github.com/cilium/cilium/pull/24075\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/cilium/cilium/releases/tag/v1.11.15\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/cilium/cilium/releases/tag/v1.12.8\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/cilium/cilium/releases/tag/v1.13.1\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/cilium/cilium/security/advisories/GHSA-4hc4-pgfx-3mrx\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://kubernetes.io/docs/reference/access-authn-authz/rbac/\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/cilium/cilium/pull/24075\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/cilium/cilium/releases/tag/v1.11.15\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/cilium/cilium/releases/tag/v1.12.8\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/cilium/cilium/releases/tag/v1.13.1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/cilium/cilium/security/advisories/GHSA-4hc4-pgfx-3mrx\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://kubernetes.io/docs/reference/access-authn-authz/rbac/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}"
  }
}


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