GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration
oesa-2024-2231
Vulnerability from osv_openeuler
Published
2024-10-12 11:07
Modified
2026-08-06 11:07
Summary
unbound security update
Details

Unbound is a validating, recursive, caching DNS resolver. It is designed to be fast and lean and incorporates modern features based on open standards. To help increase online privacy, Unbound supports DNS-over-TLS which allows clients to encrypt their communication. Unbound is available for most platforms such as FreeBSD, OpenBSD, NetBSD, MacOS, Linux and Microsoft Windows. Unbound is a totally free, open source software under the BSD license. It doesn't make custom builds or provide specific features to paying customers only.

Security Fix(es):

The DNS protocol in RFC 1035 and updates allows remote attackers to cause a denial of service (resource consumption) by arranging for DNS queries to be accumulated for seconds, such that responses are later sent in a pulsing burst (which can be considered traffic amplification in some cases), aka the "DNSBomb" issue.(CVE-2024-33655)

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "python3-unbound-1.13.2-15.oe2203sp4.aarch64.rpm",
          "unbound-1.13.2-15.oe2203sp4.aarch64.rpm",
          "unbound-anchor-1.13.2-15.oe2203sp4.aarch64.rpm",
          "unbound-debuginfo-1.13.2-15.oe2203sp4.aarch64.rpm",
          "unbound-debugsource-1.13.2-15.oe2203sp4.aarch64.rpm",
          "unbound-devel-1.13.2-15.oe2203sp4.aarch64.rpm",
          "unbound-help-1.13.2-15.oe2203sp4.aarch64.rpm",
          "unbound-libs-1.13.2-15.oe2203sp4.aarch64.rpm"
        ],
        "src": [
          "unbound-1.13.2-15.oe2203sp4.src.rpm"
        ],
        "x86_64": [
          "python3-unbound-1.13.2-15.oe2203sp4.x86_64.rpm",
          "unbound-1.13.2-15.oe2203sp4.x86_64.rpm",
          "unbound-anchor-1.13.2-15.oe2203sp4.x86_64.rpm",
          "unbound-debuginfo-1.13.2-15.oe2203sp4.x86_64.rpm",
          "unbound-debugsource-1.13.2-15.oe2203sp4.x86_64.rpm",
          "unbound-devel-1.13.2-15.oe2203sp4.x86_64.rpm",
          "unbound-help-1.13.2-15.oe2203sp4.x86_64.rpm",
          "unbound-libs-1.13.2-15.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "unbound",
        "purl": "pkg:rpm/openEuler/unbound\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.13.2-15.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "Unbound is a validating, recursive, caching DNS resolver. It is designed to be fast and lean and incorporates modern features based on open standards. To help increase online privacy, Unbound supports DNS-over-TLS which allows clients to encrypt their communication. Unbound is available for most platforms such as FreeBSD, OpenBSD, NetBSD, MacOS, Linux and Microsoft Windows. Unbound is a totally free, open source software under the BSD license. It doesn\u0026apos;t make custom builds or provide specific features to paying customers only.\r\n\r\nSecurity Fix(es):\r\n\r\nThe DNS protocol in RFC 1035 and updates allows remote attackers to cause a denial of service (resource consumption) by arranging for DNS queries to be accumulated for seconds, such that responses are later sent in a pulsing burst (which can be considered traffic amplification in some cases), aka the \u0026quot;DNSBomb\u0026quot; issue.(CVE-2024-33655)",
  "id": "OESA-2024-2231",
  "modified": "2026-08-06T11:07:42Z",
  "published": "2024-10-12T11:07:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-2231"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-33655"
    }
  ],
  "schema_version": "1.7.2",
  "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": "unbound security update",
  "upstream": [
    "CVE-2024-33655"
  ]
}



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.


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.