Vulnerability-Lookup

alsa-2026:36318

Vulnerability from osv_almalinux

Published

2026-07-07 00:00

Modified

2026-07-08 11:30

Summary

Moderate: aardvark-dns security update

Details

Authoritative DNS server for A/AAAA container records Forwards other request to configured resolvers. Read more about configuration in src/backend/mod.rs.

Security Fix(es):

aardvark-dns: Aardvark-dns: Denial of Service via truncated TCP DNS query and connection reset (CVE-2026-35406)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

URL

Type

	https://access.redhat.com/errata/RHSA-2026:36318	ADVISORY
	https://access.redhat.com/security/cve/CVE-2026-35406	REPORT
	https://bugzilla.redhat.com/2456280	REPORT
	https://errata.almalinux.org/9/ALSA-2026-36318.html	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "aardvark-dns"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:1.17.1-1.el9_8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "Authoritative DNS server for A/AAAA container records Forwards other request to configured resolvers. Read more about configuration in `src/backend/mod.rs`.  \n\nSecurity Fix(es):  \n\n  * aardvark-dns: Aardvark-dns: Denial of Service via truncated TCP DNS query and connection reset (CVE-2026-35406)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2026:36318",
  "modified": "2026-07-08T11:30:14Z",
  "published": "2026-07-07T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:36318"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-35406"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2456280"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/9/ALSA-2026-36318.html"
    }
  ],
  "related": [
    "CVE-2026-35406"
  ],
  "summary": "Moderate: aardvark-dns security update"
}

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 (v2.0.3)

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M

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.

Detection rules are retrieved from Rulezet.

Action not permitted

alsa-2026:36318

Vulnerability from osv_almalinux

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

Tags

Sightings

Nomenclature