Vulnerability-Lookup

GHSA-HFPQ-X728-986J

Vulnerability from github – Published: 2026-04-07 20:13 – Updated: 2026-04-24 13:44

Summary

netavark has incorrect error handling for malformed tcp packets

Details

Impact

A truncated TCP DNS query followed by a connection reset causes aardvark-dns to enter an unrecoverable infinite error loop at 100% CPU.

Patches

https://github.com/containers/aardvark-dns/commit/3b49ea7b38bdea134b7f03256f2e13f44ce73bb1

Workarounds

None

Credits

Thanks to @dkane01 for reporting this

Severity

7.5 (High)


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

Show details on source website

JSON

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.17.0"
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "netavark"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.16.0"
            },
            {
              "fixed": "1.17.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-35406"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-835"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-07T20:13:04Z",
    "nvd_published_at": "2026-04-07T22:16:23Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nA truncated TCP DNS query followed by a connection reset causes aardvark-dns to enter an unrecoverable infinite error loop at 100% CPU.\n\n### Patches\nhttps://github.com/containers/aardvark-dns/commit/3b49ea7b38bdea134b7f03256f2e13f44ce73bb1\n\n### Workarounds\nNone\n\n### Credits\n\nThanks to @dkane01 for reporting this",
  "id": "GHSA-hfpq-x728-986j",
  "modified": "2026-04-24T13:44:30Z",
  "published": "2026-04-07T20:13:04Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/containers/aardvark-dns/security/advisories/GHSA-hfpq-x728-986j"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35406"
    },
    {
      "type": "WEB",
      "url": "https://github.com/containers/aardvark-dns/commit/3b49ea7b38bdea134b7f03256f2e13f44ce73bb1"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/containers/aardvark-dns"
    },
    {
      "type": "WEB",
      "url": "https://github.com/containers/aardvark-dns/releases/tag/v1.17.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "netavark has incorrect error handling for malformed tcp packets"
}

CVE-2026-35406 (GCVE-0-2026-35406)

Vulnerability from cvelistv5 – Published: 2026-04-07 21:32 – Updated: 2026-04-08 16:14

Title

Aardvark-dns has incorrect error handling for malformed tcp packets

Summary

Aardvark-dns is an authoritative dns server for A/AAAA container records. From 1.16.0 to 1.17.0, a truncated TCP DNS query followed by a connection reset causes aardvark-dns to enter an unrecoverable infinite error loop at 100% CPU. This vulnerability is fixed in 1.17.1.

Severity

6.2 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-08 16:09 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7595 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/containers/aardvark-dns/securi…	x_refsource_CONFIRM
https://github.com/containers/aardvark-dns/commit…	x_refsource_MISC
https://github.com/containers/aardvark-dns/releas…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
containers	aardvark-dns	Affected: >= 1.16.0, < 1.17.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-35406",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-08T16:09:52.961124Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-08T16:14:33.190Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "aardvark-dns",
          "vendor": "containers",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.16.0, \u003c 1.17.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Aardvark-dns is an authoritative dns server for A/AAAA container records. From 1.16.0 to 1.17.0, a truncated TCP DNS query followed by a connection reset causes aardvark-dns to enter an unrecoverable infinite error loop at 100% CPU. This vulnerability is fixed in 1.17.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.2,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-07T21:32:23.512Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/containers/aardvark-dns/security/advisories/GHSA-hfpq-x728-986j",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/containers/aardvark-dns/security/advisories/GHSA-hfpq-x728-986j"
        },
        {
          "name": "https://github.com/containers/aardvark-dns/commit/3b49ea7b38bdea134b7f03256f2e13f44ce73bb1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/containers/aardvark-dns/commit/3b49ea7b38bdea134b7f03256f2e13f44ce73bb1"
        },
        {
          "name": "https://github.com/containers/aardvark-dns/releases/tag/v1.17.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/containers/aardvark-dns/releases/tag/v1.17.1"
        }
      ],
      "source": {
        "advisory": "GHSA-hfpq-x728-986j",
        "discovery": "UNKNOWN"
      },
      "title": "Aardvark-dns has incorrect error handling for malformed tcp packets"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-35406",
    "datePublished": "2026-04-07T21:32:23.512Z",
    "dateReserved": "2026-04-02T17:03:42.075Z",
    "dateUpdated": "2026-04-08T16:14:33.190Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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