FKIE_CVE-2024-43167

Vulnerability from fkie_nvd - Published: 2024-08-12 13:38 - Updated: 2025-11-03 22:18
Severity ?
2.8 (Low) - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
Summary
DISPUTE NOTE: this issue does not pose a security risk as it (according to analysis by the original software developer, NLnet Labs) falls within the expected functionality and security controls of the application. Red Hat has made a claim that there is a security risk within Red Hat products. NLnet Labs has no further information about the claim, and suggests that affected Red Hat customers refer to available Red Hat documentation or support channels. ORIGINAL DESCRIPTION: A NULL pointer dereference flaw was found in the ub_ctx_set_fwd function in Unbound. This issue could allow an attacker who can invoke specific sequences of API calls to cause a segmentation fault. When certain API functions such as ub_ctx_set_fwd and ub_ctx_resolvconf are called in a particular order, the program attempts to read from a NULL pointer, leading to a crash. This issue can result in a denial of service by causing the application to terminate unexpectedly.
References
sep@nlnetlabs.nlhttps://access.redhat.com/security/cve/CVE-2024-43167
sep@nlnetlabs.nlhttps://bugzilla.redhat.com/show_bug.cgi?id=2303456
sep@nlnetlabs.nlhttps://github.com/NLnetLabs/unbound/issues/1072
sep@nlnetlabs.nlhttps://github.com/NLnetLabs/unbound/pull/1073/files
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/08/16/6
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/09/msg00046.html
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "DISPUTE NOTE: this issue does not pose a security risk as it (according to analysis by the original software developer, NLnet Labs) falls within the expected functionality and security controls of the application. Red Hat has made a claim that there is a security risk within Red Hat products. NLnet Labs has no further information about the claim, and suggests that affected Red Hat customers refer to available Red Hat documentation or support channels. ORIGINAL DESCRIPTION: A NULL pointer dereference flaw was found in the ub_ctx_set_fwd function in Unbound. This issue could allow an attacker who can invoke specific sequences of API calls to cause a segmentation fault. When certain API functions such as ub_ctx_set_fwd and ub_ctx_resolvconf are called in a particular order, the program attempts to read from a NULL pointer, leading to a crash. This issue can result in a denial of service by causing the application to terminate unexpectedly."
    },
    {
      "lang": "es",
      "value": "Se encontr\u00f3 una falla de desreferencia de puntero NULL en la funci\u00f3n ub_ctx_set_fwd en Unbound. Este problema podr\u00eda permitir que un atacante que pueda invocar secuencias espec\u00edficas de llamadas API provoque un error de segmentaci\u00f3n. Cuando ciertas funciones API como ub_ctx_set_fwd y ub_ctx_resolvconf se llaman en un orden particular, el programa intenta leer desde un puntero NULL, lo que provoca un bloqueo. Este problema puede provocar una denegaci\u00f3n de servicio al provocar que la aplicaci\u00f3n finalice inesperadamente."
    }
  ],
  "id": "CVE-2024-43167",
  "lastModified": "2025-11-03T22:18:07.100",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "LOW",
          "baseScore": 2.8,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 1.3,
        "impactScore": 1.4,
        "source": "sep@nlnetlabs.nl",
        "type": "Secondary"
      }
    ]
  },
  "published": "2024-08-12T13:38:35.927",
  "references": [
    {
      "source": "sep@nlnetlabs.nl",
      "url": "https://access.redhat.com/security/cve/CVE-2024-43167"
    },
    {
      "source": "sep@nlnetlabs.nl",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2303456"
    },
    {
      "source": "sep@nlnetlabs.nl",
      "url": "https://github.com/NLnetLabs/unbound/issues/1072"
    },
    {
      "source": "sep@nlnetlabs.nl",
      "url": "https://github.com/NLnetLabs/unbound/pull/1073/files"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2024/08/16/6"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2024/09/msg00046.html"
    }
  ],
  "sourceIdentifier": "sep@nlnetlabs.nl",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "sep@nlnetlabs.nl",
      "type": "Secondary"
    }
  ]
}


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