FKIE_CVE-2023-30851

Vulnerability from fkie_nvd - Published: 2023-05-25 18:15 - Updated: 2026-06-17 05:55
Severity
2.6 (Low) - CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N
5.3 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Summary
Cilium is a networking, observability, and security solution with an eBPF-based dataplane. This issue only impacts users who have a HTTP policy that applies to multiple `toEndpoints` AND have an allow-all rule in place that affects only one of those endpoints. In such cases, a wildcard rule will be appended to the set of HTTP rules, which could cause bypass of HTTP policies. This issue has been patched in Cilium 1.11.16, 1.12.9, and 1.13.2.
References
security-advisories@github.comhttps://github.com/cilium/cilium/releases/tag/v1.11.16Release Notes
security-advisories@github.comhttps://github.com/cilium/cilium/releases/tag/v1.12.9Release Notes
security-advisories@github.comhttps://github.com/cilium/cilium/releases/tag/v1.13.2Release Notes
security-advisories@github.comhttps://github.com/cilium/cilium/security/advisories/GHSA-2h44-x2wx-49f4Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/cilium/cilium/releases/tag/v1.11.16Release Notes
af854a3a-2127-422b-91ae-364da2661108https://github.com/cilium/cilium/releases/tag/v1.12.9Release Notes
af854a3a-2127-422b-91ae-364da2661108https://github.com/cilium/cilium/releases/tag/v1.13.2Release Notes
af854a3a-2127-422b-91ae-364da2661108https://github.com/cilium/cilium/security/advisories/GHSA-2h44-x2wx-49f4Vendor Advisory
Impacted products
Vendor Product Version
cilium cilium *
cilium cilium *
cilium cilium *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "cilium",
          "vendor": "cilium",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.11.16"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.12.0, \u003c 1.12.9"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.13.0, \u003c 1.13.2"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "826FEF2C-9172-44D8-AE4C-B656329510F2",
              "versionEndExcluding": "1.11.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A8371AD7-2C69-4584-B0C3-2AB4E632FC37",
              "versionEndExcluding": "1.12.9",
              "versionStartIncluding": "1.12.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B2A8D7A6-200B-443C-B171-512964293B8D",
              "versionEndExcluding": "1.13.2",
              "versionStartIncluding": "1.13.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Cilium is a networking, observability, and security solution with an eBPF-based dataplane. This issue only impacts users who have a HTTP policy that applies to multiple `toEndpoints` AND have an allow-all rule in place that affects only one of those endpoints. In such cases, a wildcard rule will be appended to the set of HTTP rules, which could cause bypass of HTTP policies. This issue has been patched in Cilium 1.11.16, 1.12.9, and 1.13.2."
    }
  ],
  "id": "CVE-2023-30851",
  "lastModified": "2026-06-17T05:55:46.380",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 2.6,
          "baseSeverity": "LOW",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-30851",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-01-16T19:15:03.306440Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2023-05-25T18:15:10.240",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/cilium/cilium/releases/tag/v1.11.16"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/cilium/cilium/releases/tag/v1.12.9"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/cilium/cilium/releases/tag/v1.13.2"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/cilium/cilium/security/advisories/GHSA-2h44-x2wx-49f4"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/cilium/cilium/releases/tag/v1.11.16"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/cilium/cilium/releases/tag/v1.12.9"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/cilium/cilium/releases/tag/v1.13.2"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/cilium/cilium/security/advisories/GHSA-2h44-x2wx-49f4"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-693"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.