gsd-2023-41333
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. An attacker with the ability to create or modify CiliumNetworkPolicy objects in a particular namespace is able to affect traffic on an entire Cilium cluster, potentially bypassing policy enforcement in other namespaces. By using a crafted `endpointSelector` that uses the `DoesNotExist` operator on the `reserved:init` label, the attacker can create policies that bypass namespace restrictions and affect the entire Cilium cluster. This includes potentially allowing or denying all traffic. This attack requires API server access, as described in the Kubernetes API Server Attacker section of the Cilium Threat Model. This issue has been resolved in Cilium versions 1.14.2, 1.13.7, and 1.12.14. As a workaround an admission webhook can be used to prevent the use of `endpointSelectors` that use the `DoesNotExist` operator on the `reserved:init` label in CiliumNetworkPolicies.
Aliases
Aliases
CVE-2023-41333


To clipboard 

{
  "GSD": {
    "alias": "CVE-2023-41333",
    "id": "GSD-2023-41333"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-41333"
      ],
      "details": "Cilium is a networking, observability, and security solution with an eBPF-based dataplane. An attacker with the ability to create or modify CiliumNetworkPolicy objects in a particular namespace is able to affect traffic on an entire Cilium cluster, potentially bypassing policy enforcement in other namespaces. By using a crafted `endpointSelector` that uses the `DoesNotExist` operator on the `reserved:init` label, the attacker can create policies that bypass namespace restrictions and affect the entire Cilium cluster. This includes potentially allowing or denying all traffic. This attack requires API server access, as described in the Kubernetes API Server Attacker section of the Cilium Threat Model. This issue has been resolved in Cilium versions 1.14.2, 1.13.7, and 1.12.14. As a workaround an admission webhook can be used to prevent the use of `endpointSelectors` that use the `DoesNotExist` operator on the `reserved:init` label in CiliumNetworkPolicies.\n",
      "id": "GSD-2023-41333",
      "modified": "2023-12-13T01:20:45.467379Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2023-41333",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "cilium",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 1.14.0, \u003c 1.14.2"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 1.13.0, \u003c 1.13.7"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003c 1.12.14"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "cilium"
            }
          ]
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      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "Cilium is a networking, observability, and security solution with an eBPF-based dataplane. An attacker with the ability to create or modify CiliumNetworkPolicy objects in a particular namespace is able to affect traffic on an entire Cilium cluster, potentially bypassing policy enforcement in other namespaces. By using a crafted `endpointSelector` that uses the `DoesNotExist` operator on the `reserved:init` label, the attacker can create policies that bypass namespace restrictions and affect the entire Cilium cluster. This includes potentially allowing or denying all traffic. This attack requires API server access, as described in the Kubernetes API Server Attacker section of the Cilium Threat Model. This issue has been resolved in Cilium versions 1.14.2, 1.13.7, and 1.12.14. As a workaround an admission webhook can be used to prevent the use of `endpointSelectors` that use the `DoesNotExist` operator on the `reserved:init` label in CiliumNetworkPolicies.\n"
          }
        ]
      },
      "impact": {
        "cvss": [
          {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:H",
            "version": "3.1"
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "cweId": "CWE-306",
                "lang": "eng",
                "value": "CWE-306: Missing Authentication for Critical Function"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/cilium/cilium/security/advisories/GHSA-4xp2-w642-7mcx",
            "refsource": "MISC",
            "url": "https://github.com/cilium/cilium/security/advisories/GHSA-4xp2-w642-7mcx"
          },
          {
            "name": "https://github.com/cilium/cilium/pull/28007",
            "refsource": "MISC",
            "url": "https://github.com/cilium/cilium/pull/28007"
          },
          {
            "name": "https://docs.cilium.io/en/stable/security/threat-model/#kubernetes-api-server-attacker",
            "refsource": "MISC",
            "url": "https://docs.cilium.io/en/stable/security/threat-model/#kubernetes-api-server-attacker"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-4xp2-w642-7mcx",
        "discovery": "UNKNOWN"
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "1.12.14",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "1.14.2",
                "versionStartIncluding": "1.14.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "1.13.7",
                "versionStartIncluding": "1.13.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2023-41333"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "Cilium is a networking, observability, and security solution with an eBPF-based dataplane. An attacker with the ability to create or modify CiliumNetworkPolicy objects in a particular namespace is able to affect traffic on an entire Cilium cluster, potentially bypassing policy enforcement in other namespaces. By using a crafted `endpointSelector` that uses the `DoesNotExist` operator on the `reserved:init` label, the attacker can create policies that bypass namespace restrictions and affect the entire Cilium cluster. This includes potentially allowing or denying all traffic. This attack requires API server access, as described in the Kubernetes API Server Attacker section of the Cilium Threat Model. This issue has been resolved in Cilium versions 1.14.2, 1.13.7, and 1.12.14. As a workaround an admission webhook can be used to prevent the use of `endpointSelectors` that use the `DoesNotExist` operator on the `reserved:init` label in CiliumNetworkPolicies.\n"
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-306"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://docs.cilium.io/en/stable/security/threat-model/#kubernetes-api-server-attacker",
              "refsource": "MISC",
              "tags": [
                "Product"
              ],
              "url": "https://docs.cilium.io/en/stable/security/threat-model/#kubernetes-api-server-attacker"
            },
            {
              "name": "https://github.com/cilium/cilium/security/advisories/GHSA-4xp2-w642-7mcx",
              "refsource": "MISC",
              "tags": [
                "Mitigation",
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/cilium/cilium/security/advisories/GHSA-4xp2-w642-7mcx"
            },
            {
              "name": "https://github.com/cilium/cilium/pull/28007",
              "refsource": "MISC",
              "tags": [
                "Issue Tracking",
                "Patch"
              ],
              "url": "https://github.com/cilium/cilium/pull/28007"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.7,
          "impactScore": 5.8
        }
      },
      "lastModifiedDate": "2023-09-30T02:01Z",
      "publishedDate": "2023-09-27T15:19Z"
    }
  }
}


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