gsd-2021-25748
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use a newline character to bypass the sanitization of the `spec.rules[].http.paths[].path` field of an Ingress object (in the `networking.k8s.io` or `extensions` API group) to obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster.
Aliases
Aliases
CVE-2021-25748


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-25748",
    "id": "GSD-2021-25748",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-25748.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-25748"
      ],
      "details": "A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use a newline character to bypass the sanitization of the `spec.rules[].http.paths[].path` field of an Ingress object (in the `networking.k8s.io` or `extensions` API group) to obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster.",
      "id": "GSD-2021-25748",
      "modified": "2023-12-13T01:23:21.663973Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security@kubernetes.io",
        "DATE_PUBLIC": "2022-06-10T16:00:00.000Z",
        "ID": "CVE-2021-25748",
        "STATE": "PUBLIC",
        "TITLE": "Ingress-nginx `path` sanitization can be bypassed with newline character"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Kubernetes ingress-nginx",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_value": "1.2.1"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Kubernetes"
            }
          ]
        }
      },
      "credit": [
        {
          "lang": "eng",
          "value": "Gafnit Amiga"
        }
      ],
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use a newline character to bypass the sanitization of the `spec.rules[].http.paths[].path` field of an Ingress object (in the `networking.k8s.io` or `extensions` API group) to obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster."
          }
        ]
      },
      "generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 7.6,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-20: Improper Input Validation"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://groups.google.com/g/kubernetes-security-announce/c/avaRYa9c7I8",
            "refsource": "MISC",
            "url": "https://groups.google.com/g/kubernetes-security-announce/c/avaRYa9c7I8"
          },
          {
            "name": "https://github.com/kubernetes/ingress-nginx/issues/8686",
            "refsource": "MISC",
            "url": "https://github.com/kubernetes/ingress-nginx/issues/8686"
          }
        ]
      },
      "source": {
        "defect": [
          "https://github.com/kubernetes/ingress-nginx/issues/8686"
        ],
        "discovery": "EXTERNAL"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003cv1.2.1",
          "affected_versions": "All versions before 1.2.1",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "cwe_ids": [
            "CWE-20",
            "CWE-1035",
            "CWE-937"
          ],
          "date": "2023-06-01",
          "description": "A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use a newline character to bypass the sanitization of the `spec.rules[].http.paths[].path` field of an Ingress object (in the `networking.k8s.io` or `extensions` API group) to obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster.",
          "fixed_versions": [
            "v1.2.1"
          ],
          "identifier": "CVE-2021-25748",
          "identifiers": [
            "CVE-2021-25748"
          ],
          "not_impacted": "All versions starting from 1.2.1",
          "package_slug": "go/github.com/kubernetes/ingress-nginx",
          "pubdate": "2023-05-24",
          "solution": "Upgrade to version 1.2.1 or above.",
          "title": "Improper Input Validation",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-25748",
            "https://github.com/kubernetes/ingress-nginx/issues/8686",
            "https://groups.google.com/g/kubernetes-security-announce/c/avaRYa9c7I8"
          ],
          "uuid": "5667ef15-bae3-4428-bd1f-20d8775b14e5",
          "versions": []
        },
        {
          "affected_range": "\u003c1.2.1",
          "affected_versions": "All versions before 1.2.1",
          "cwe_ids": [
            "CWE-1035",
            "CWE-937"
          ],
          "date": "2023-05-24",
          "description": "A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use a newline character to bypass the sanitization of the `spec.rules[].http.paths[].path` field of an Ingress object (in the `networking.k8s.io` or `extensions` API group) to obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster.",
          "fixed_versions": [
            "1.2.1"
          ],
          "identifier": "CVE-2021-25748",
          "identifiers": [
            "GHSA-863x-868h-968x",
            "CVE-2021-25748"
          ],
          "not_impacted": "All versions starting from 1.2.1",
          "package_slug": "go/k8s.io/ingress-nginx",
          "pubdate": "2023-05-24",
          "solution": "Upgrade to version 1.2.1 or above.",
          "title": "Ingress-nginx `path` sanitization can be bypassed with newline character",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-25748",
            "https://github.com/kubernetes/ingress-nginx/issues/8686",
            "https://groups.google.com/g/kubernetes-security-announce/c/avaRYa9c7I8",
            "https://github.com/kubernetes/ingress-nginx/pull/8623",
            "https://github.com/kubernetes/ingress-nginx/releases/tag/controller-v1.2.1",
            "https://github.com/advisories/GHSA-863x-868h-968x"
          ],
          "uuid": "321e58ac-dbce-4cb7-8132-565b293b1f9c"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:kubernetes:ingress-nginx:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "1.2.1",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security@kubernetes.io",
          "ID": "CVE-2021-25748"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use a newline character to bypass the sanitization of the `spec.rules[].http.paths[].path` field of an Ingress object (in the `networking.k8s.io` or `extensions` API group) to obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "NVD-CWE-noinfo"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/kubernetes/ingress-nginx/issues/8686",
              "refsource": "MISC",
              "tags": [
                "Issue Tracking",
                "Mitigation",
                "Vendor Advisory"
              ],
              "url": "https://github.com/kubernetes/ingress-nginx/issues/8686"
            },
            {
              "name": "https://groups.google.com/g/kubernetes-security-announce/c/avaRYa9c7I8",
              "refsource": "MISC",
              "tags": [
                "Mailing List",
                "Mitigation",
                "Vendor Advisory"
              ],
              "url": "https://groups.google.com/g/kubernetes-security-announce/c/avaRYa9c7I8"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2023-06-01T20:44Z",
      "publishedDate": "2023-05-24T17:15Z"
    }
  }
}


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