Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2025-01-27 07:09

Modified

2025-05-20 10:02

Summary

DoS in Cilium agent DNS proxy from crafted DNS responses

Details

Cilium is a networking, observability, and security solution with an eBPF-based dataplane. A denial of service vulnerability affects versions 1.14.0 through 1.14.7, 1.15.0 through 1.15.11, and 1.16.0 through 1.16.4. In a Kubernetes cluster where Cilium is configured to proxy DNS traffic, an attacker can crash Cilium agents by sending a crafted DNS response to workloads from outside the cluster. For traffic that is allowed but without using DNS-based policy, the dataplane will continue to pass traffic as configured at the time of the DoS. For workloads that have DNS-based policy configured, existing connections may continue to operate, and new connections made without relying on DNS resolution may continue to be established, but new connections which rely on DNS resolution may be disrupted. Any configuration changes that affect the impacted agent may not be applied until the agent is able to restart. This issue is fixed in Cilium v1.14.18, v1.15.12, and v1.16.5. No known workarounds are available.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "cilium",
        "purl": "pkg:bitnami/cilium"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.15.4"
            },
            {
              "fixed": "1.16.5"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-23028"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:cilium:cilium:*:*:*:*:*:go:*:*"
    ],
    "severity": "Medium"
  },
  "details": "Cilium is a networking, observability, and security solution with an eBPF-based dataplane. A denial of service vulnerability affects versions 1.14.0 through 1.14.7, 1.15.0 through 1.15.11, and 1.16.0 through 1.16.4. In a Kubernetes cluster where Cilium is configured to proxy DNS traffic, an attacker can crash Cilium agents by sending a crafted DNS response to workloads from outside the cluster. For traffic that is allowed but without using DNS-based policy, the dataplane will continue to pass traffic as configured at the time of the DoS. For workloads that have DNS-based policy configured, existing connections may continue to operate, and new connections made without relying on DNS resolution may continue to be established, but new connections which rely on DNS resolution may be disrupted. Any configuration changes that affect the impacted agent may not be applied until the agent is able to restart. This issue is fixed in Cilium v1.14.18, v1.15.12, and v1.16.5. No known workarounds are available.",
  "id": "BIT-cilium-2025-23028",
  "modified": "2025-05-20T10:02:07.006Z",
  "published": "2025-01-27T07:09:18.725Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/cilium/cilium/pull/36252"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cilium/cilium/security/advisories/GHSA-9m5p-c77c-f9j7"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-23028"
    }
  ],
  "schema_version": "1.5.0",
  "summary": "DoS in Cilium agent DNS proxy from crafted DNS responses"
}

CVE-2025-23028 (GCVE-0-2025-23028)

Vulnerability from cvelistv5 – Published: 2025-01-22 16:48 – Updated: 2025-02-18 19:38

Title

DoS in Cilium agent DNS proxy from crafted DNS responses

Summary

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

GitHub_M

References

URL

Tags

	https://github.com/cilium/cilium/security/advisor…	x_refsource_CONFIRM
	https://github.com/cilium/cilium/pull/36252	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	cilium	cilium	Affected: >= 1.14.0, < 1.14.18 Affected: >= 1.15.0, < 1.15.12 Affected: >= 1.16.0, < 1.16.5

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-23028",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-01-22T17:01:24.770374Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-18T19:38:18.151Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "cilium",
          "vendor": "cilium",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.14.0, \u003c 1.14.18"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.15.0, \u003c 1.15.12"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.16.0, \u003c 1.16.5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Cilium is a networking, observability, and security solution with an eBPF-based dataplane. A denial of service vulnerability affects versions 1.14.0 through 1.14.7, 1.15.0 through 1.15.11, and 1.16.0 through 1.16.4. In a Kubernetes cluster where Cilium is configured to proxy DNS traffic, an attacker can crash Cilium agents by sending a crafted DNS response to workloads from outside the cluster. For traffic that is allowed but without using DNS-based policy, the dataplane will continue to pass traffic as configured at the time of the DoS. For workloads that have DNS-based policy configured, existing connections may continue to operate, and new connections made without relying on DNS resolution may continue to be established, but new connections which rely on DNS resolution may be disrupted. Any configuration changes that affect the impacted agent may not be applied until the agent is able to restart. This issue is fixed in Cilium v1.14.18, v1.15.12, and v1.16.5. No known workarounds are available."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-01-22T16:48:19.722Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/cilium/cilium/security/advisories/GHSA-9m5p-c77c-f9j7",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/cilium/cilium/security/advisories/GHSA-9m5p-c77c-f9j7"
        },
        {
          "name": "https://github.com/cilium/cilium/pull/36252",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cilium/cilium/pull/36252"
        }
      ],
      "source": {
        "advisory": "GHSA-9m5p-c77c-f9j7",
        "discovery": "UNKNOWN"
      },
      "title": "DoS in Cilium agent DNS proxy from crafted DNS responses"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-23028",
    "datePublished": "2025-01-22T16:48:19.722Z",
    "dateReserved": "2025-01-10T15:11:08.881Z",
    "dateUpdated": "2025-02-18T19:38:18.151Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

Vulnerability from bitnami_vulndb

CVE-2025-23028 (GCVE-0-2025-23028)

Tags

Sightings

Nomenclature