GSD-2022-2795

Vulnerability from gsd - Updated: 2023-12-13 01:19
Details
By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service.
Aliases
Aliases
CVE-2022-2795
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{
  "GSD": {
    "alias": "CVE-2022-2795",
    "description": "By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the resolver\u0027s performance, effectively denying legitimate clients access to the DNS resolution service.",
    "id": "GSD-2022-2795",
    "references": [
      "https://www.debian.org/security/2022/dsa-5235",
      "https://advisories.mageia.org/CVE-2022-2795.html",
      "https://www.suse.com/security/cve/CVE-2022-2795.html",
      "https://ubuntu.com/security/CVE-2022-2795",
      "https://security.archlinux.org/CVE-2022-2795",
      "https://access.redhat.com/errata/RHSA-2023:0402"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2022-2795"
      ],
      "details": "By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the resolver\u0027s performance, effectively denying legitimate clients access to the DNS resolution service.",
      "id": "GSD-2022-2795",
      "modified": "2023-12-13T01:19:19.860776Z",
      "schema_version": "1.4.0"
    }
  },
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        "DATE_PUBLIC": "2022-09-21T09:39:29.000Z",
        "ID": "CVE-2022-2795",
        "STATE": "PUBLIC",
        "TITLE": "Processing large delegations may severely degrade resolver performance"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "BIND9",
                    "version": {
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                          "version_name": "Open Source Branches 9.0 through 9.16",
                          "version_value": "9.0.0 through versions before 9.16.33"
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                          "version_name": "Open Source Branch 9.18",
                          "version_value": "9.18.0 through versions before 9.18.7"
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                          "version_name": "Supported Preview Branches 9.9-S through 9.11-S",
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                          "version_name": "Development Branch 9.19",
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                        }
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                  }
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              "vendor_name": "ISC"
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      "credit": [
        {
          "lang": "eng",
          "value": "ISC would like to thank Yehuda Afek from Tel-Aviv University and Anat Bremler-Barr \u0026 Shani Stajnrod from Reichman University for bringing this vulnerability to our attention."
        }
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          }
        ]
      },
      "exploit": [
        {
          "lang": "eng",
          "value": "We are not aware of any active exploits."
        }
      ],
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
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      "problemtype": {
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            "description": [
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                "lang": "eng",
                "value": "In BIND 9.0.0 -\u003e 9.16.32, 9.18.0 -\u003e 9.18.6, versions 9.9.3-S1 -\u003e 9.11.37-S1, 9.16.8-S1 -\u003e 9.16.32-S1 of the BIND Supported Preview Edition, and versions 9.19.0 -\u003e 9.19.4 of the BIND 9.19 development branch, a flaw in resolver code can cause named to spend excessive amounts of time on processing large delegations."
              }
            ]
          }
        ]
      },
      "references": {
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            "name": "https://kb.isc.org/docs/cve-2022-2795",
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            "url": "https://kb.isc.org/docs/cve-2022-2795"
          },
          {
            "name": "[oss-security] 20220921 ISC has disclosed six vulnerabilities in BIND (CVE-2022-2795, CVE-2022-2881, CVE-2022-2906, CVE-2022-3080, CVE-2022-38177, CVE-2022-38178)",
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          },
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            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MRHB6J4Z7BKH4HPEKG5D35QGRD6ANNMT/"
          },
          {
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          {
            "name": "[debian-lts-announce] 20221005 [SECURITY] [DLA 3138-1] bind9 security update",
            "refsource": "MLIST",
            "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00007.html"
          },
          {
            "name": "GLSA-202210-25",
            "refsource": "GENTOO",
            "url": "https://security.gentoo.org/glsa/202210-25"
          }
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      },
      "solution": [
        {
          "lang": "eng",
          "value": "Upgrade to the patched release most closely related to your current version of BIND: BIND 9.16.33, BIND 9.18.7, BIND 9.19.5, or for BIND Supported Preview Edition (a special feature preview branch of BIND provided to eligible ISC support customers): BIND 9.16.33-S1."
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "work_around": [
        {
          "lang": "eng",
          "value": "No workarounds known."
        }
      ]
    },
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            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
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          "exploitabilityScore": 3.9,
          "impactScore": 1.4
        }
      },
      "lastModifiedDate": "2023-05-16T11:01Z",
      "publishedDate": "2022-09-21T11:15Z"
    }
  }
}


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Sightings

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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.