Vulnerability-Lookup

FKIE_CVE-2017-12132

Vulnerability from fkie_nvd - Published: 2017-08-01 16:29 - Updated: 2026-06-17 01:02

Severity

5.9 (Medium) - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Summary

The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2.26, when EDNS support is enabled, will solicit large UDP responses from name servers, potentially simplifying off-path DNS spoofing attacks due to IP fragmentation.

References

URL	Tags
cve@mitre.org	http://www.securityfocus.com/bid/100598
cve@mitre.org	https://access.redhat.com/errata/RHSA-2018:0805
cve@mitre.org	https://arxiv.org/pdf/1205.4011.pdf	Technical Description, Third Party Advisory
cve@mitre.org	https://sourceware.org/bugzilla/show_bug.cgi?id=21361	Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://www.securityfocus.com/bid/100598
af854a3a-2127-422b-91ae-364da2661108	https://access.redhat.com/errata/RHSA-2018:0805
af854a3a-2127-422b-91ae-364da2661108	https://arxiv.org/pdf/1205.4011.pdf	Technical Description, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://sourceware.org/bugzilla/show_bug.cgi?id=21361	Issue Tracking, Patch, Third Party Advisory

Impacted products

	Vendor	Product	Version
	gnu	glibc	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
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              "version": "n/a"
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              "versionEndIncluding": "2.25",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2.26, when EDNS support is enabled, will solicit large UDP responses from name servers, potentially simplifying off-path DNS spoofing attacks due to IP fragmentation."
    },
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      "lang": "es",
      "value": "La herramienta de resoluci\u00f3n de zonas stub de DNS en la librer\u00eda GNU C, tambi\u00e9n conocida como glibc o libc6, en sus versiones anteriores a la 2.26 cuando el soporte EDNS est\u00e1 activado, solicitar\u00e1 respuestas UDP de gran tama\u00f1o de servidores de nombres, pudiendo simplificar los ataques de suplantaci\u00f3n de DNS debido a una fragmentaci\u00f3n de IP."
    }
  ],
  "id": "CVE-2017-12132",
  "lastModified": "2026-06-17T01:02:44.533",
  "metrics": {
    "cvssMetricV2": [
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        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
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    "cvssMetricV30": [
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          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6,
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        "type": "Primary"
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  "published": "2017-08-01T16:29:00.180",
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    },
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      "url": "https://arxiv.org/pdf/1205.4011.pdf"
    },
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.securityfocus.com/bid/100598"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Technical Description",
        "Third Party Advisory"
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      "url": "https://arxiv.org/pdf/1205.4011.pdf"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2017-12132 (GCVE-0-2017-12132)

Vulnerability from cvelistv5 – Published: 2017-08-01 16:00 – Updated: 2024-08-05 18:28

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

4 references

URL	Tags
https://arxiv.org/pdf/1205.4011.pdf	x_refsource_MISC
http://www.securityfocus.com/bid/100598	vdb-entryx_refsource_BID
https://sourceware.org/bugzilla/show_bug.cgi?id=21361	x_refsource_MISC
https://access.redhat.com/errata/RHSA-2018:0805	vendor-advisoryx_refsource_REDHAT

Date Public

2017-08-01 00:00

Show details on NVD website

JSON

To clipboard

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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.

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.