ubuntu-cve-2017-12132
Vulnerability from osv_ubuntu
Published
2017-08-01 16:29
Modified
2026-04-22 07:38
Summary
Details

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.

Severity
5.9 (Medium)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "eglibc-source",
            "binary_version": "2.19-0ubuntu6.15+esm4"
          },
          {
            "binary_name": "libc-bin",
            "binary_version": "2.19-0ubuntu6.15+esm4"
          },
          {
            "binary_name": "libc-dev-bin",
            "binary_version": "2.19-0ubuntu6.15+esm4"
          },
          {
            "binary_name": "libc6",
            "binary_version": "2.19-0ubuntu6.15+esm4"
          },
          {
            "binary_name": "libc6-amd64",
            "binary_version": "2.19-0ubuntu6.15+esm4"
          },
          {
            "binary_name": "libc6-armel",
            "binary_version": "2.19-0ubuntu6.15+esm4"
          },
          {
            "binary_name": "libc6-dev-amd64",
            "binary_version": "2.19-0ubuntu6.15+esm4"
          },
          {
            "binary_name": "libc6-dev-armel",
            "binary_version": "2.19-0ubuntu6.15+esm4"
          },
          {
            "binary_name": "libc6-dev-i386",
            "binary_version": "2.19-0ubuntu6.15+esm4"
          },
          {
            "binary_name": "libc6-dev-x32",
            "binary_version": "2.19-0ubuntu6.15+esm4"
          },
          {
            "binary_name": "libc6-i386",
            "binary_version": "2.19-0ubuntu6.15+esm4"
          },
          {
            "binary_name": "libc6-pic",
            "binary_version": "2.19-0ubuntu6.15+esm4"
          },
          {
            "binary_name": "libc6-prof",
            "binary_version": "2.19-0ubuntu6.15+esm4"
          },
          {
            "binary_name": "libc6-x32",
            "binary_version": "2.19-0ubuntu6.15+esm4"
          },
          {
            "binary_name": "multiarch-support",
            "binary_version": "2.19-0ubuntu6.15+esm4"
          },
          {
            "binary_name": "nscd",
            "binary_version": "2.19-0ubuntu6.15+esm4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "eglibc",
        "purl": "pkg:deb/ubuntu/eglibc@2.19-0ubuntu6.15+esm4?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.17-93ubuntu4",
        "2.18-0ubuntu1",
        "2.18-0ubuntu2",
        "2.18-0ubuntu4",
        "2.18-0ubuntu5",
        "2.18-0ubuntu6",
        "2.18-0ubuntu7",
        "2.19-0ubuntu2",
        "2.19-0ubuntu3",
        "2.19-0ubuntu4",
        "2.19-0ubuntu5",
        "2.19-0ubuntu6",
        "2.19-0ubuntu6.1",
        "2.19-0ubuntu6.3",
        "2.19-0ubuntu6.4",
        "2.19-0ubuntu6.5",
        "2.19-0ubuntu6.6",
        "2.19-0ubuntu6.7",
        "2.19-0ubuntu6.8",
        "2.19-0ubuntu6.9",
        "2.19-0ubuntu6.10",
        "2.19-0ubuntu6.11",
        "2.19-0ubuntu6.13",
        "2.19-0ubuntu6.14",
        "2.19-0ubuntu6.15",
        "2.19-0ubuntu6.15+esm1",
        "2.19-0ubuntu6.15+esm2",
        "2.19-0ubuntu6.15+esm3",
        "2.19-0ubuntu6.15+esm4"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "glibc-source",
            "binary_version": "2.23-0ubuntu11.3+esm3"
          },
          {
            "binary_name": "libc-bin",
            "binary_version": "2.23-0ubuntu11.3+esm3"
          },
          {
            "binary_name": "libc-dev-bin",
            "binary_version": "2.23-0ubuntu11.3+esm3"
          },
          {
            "binary_name": "libc6",
            "binary_version": "2.23-0ubuntu11.3+esm3"
          },
          {
            "binary_name": "libc6-amd64",
            "binary_version": "2.23-0ubuntu11.3+esm3"
          },
          {
            "binary_name": "libc6-armel",
            "binary_version": "2.23-0ubuntu11.3+esm3"
          },
          {
            "binary_name": "libc6-dev-amd64",
            "binary_version": "2.23-0ubuntu11.3+esm3"
          },
          {
            "binary_name": "libc6-dev-armel",
            "binary_version": "2.23-0ubuntu11.3+esm3"
          },
          {
            "binary_name": "libc6-dev-i386",
            "binary_version": "2.23-0ubuntu11.3+esm3"
          },
          {
            "binary_name": "libc6-dev-s390",
            "binary_version": "2.23-0ubuntu11.3+esm3"
          },
          {
            "binary_name": "libc6-dev-x32",
            "binary_version": "2.23-0ubuntu11.3+esm3"
          },
          {
            "binary_name": "libc6-i386",
            "binary_version": "2.23-0ubuntu11.3+esm3"
          },
          {
            "binary_name": "libc6-pic",
            "binary_version": "2.23-0ubuntu11.3+esm3"
          },
          {
            "binary_name": "libc6-s390",
            "binary_version": "2.23-0ubuntu11.3+esm3"
          },
          {
            "binary_name": "libc6-x32",
            "binary_version": "2.23-0ubuntu11.3+esm3"
          },
          {
            "binary_name": "locales",
            "binary_version": "2.23-0ubuntu11.3+esm3"
          },
          {
            "binary_name": "locales-all",
            "binary_version": "2.23-0ubuntu11.3+esm3"
          },
          {
            "binary_name": "multiarch-support",
            "binary_version": "2.23-0ubuntu11.3+esm3"
          },
          {
            "binary_name": "nscd",
            "binary_version": "2.23-0ubuntu11.3+esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "glibc",
        "purl": "pkg:deb/ubuntu/glibc@2.23-0ubuntu11.3+esm3?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.23-0ubuntu11.3+esm3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.21-0ubuntu4",
        "2.21-0ubuntu5",
        "2.21-0ubuntu6",
        "2.23-0ubuntu1",
        "2.23-0ubuntu2",
        "2.23-0ubuntu3",
        "2.23-0ubuntu4",
        "2.23-0ubuntu5",
        "2.23-0ubuntu6",
        "2.23-0ubuntu7",
        "2.23-0ubuntu9",
        "2.23-0ubuntu10",
        "2.23-0ubuntu11",
        "2.23-0ubuntu11.2",
        "2.23-0ubuntu11.3",
        "2.23-0ubuntu11.3+esm1",
        "2.23-0ubuntu11.3+esm2"
      ]
    }
  ],
  "aliases": [],
  "details": "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.",
  "id": "UBUNTU-CVE-2017-12132",
  "modified": "2026-04-22T07:38:18Z",
  "published": "2017-08-01T16:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-12132"
    },
    {
      "type": "REPORT",
      "url": "https://arxiv.org/pdf/1205.4011.pdf"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5768-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2017-12132"
    }
  ],
  "related": [
    "USN-5768-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2017-12132"
  ]
}



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.