CVE-2023-26249

Published Feb 21, 2023

Last updated 2 years ago

Overview

Description: Knot Resolver before 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response.
Source: cve@mitre.org
NVD status: Analyzed

Risk scores

CVSS 3.1

Type: Primary
Base score: 7.5
Impact score: 3.6
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: HIGH

Weaknesses

nvd@nist.gov: CWE-770

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:nic:knot_resolver:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "7668D3CA-CB4A-46F7-94CC-9027E5E7B059",
            "versionEndExcluding": "5.6.0"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

References