{
  "cveId": "CVE-2025-30193",
  "url": "https://patchblox.com/security/cve/CVE-2025-30193",
  "summary": "CVE-2025-30193 is fixed in dnsdist on 1 platform, first by dnsdist 1.6.1-1ubuntu0.1~esm2, released May 20, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "dnsdist: In some circumstances, when DNSdist is configured to allow an unlimited number of queries on a single, incoming TCP c...",
  "description": "In some circumstances, when DNSdist is configured to allow an unlimited number of queries on a single, incoming TCP connection from a client, an attacker can cause a denial of service by crafting a TCP exchange that triggers an exhaustion of the stack and a crash of DNSdist, causing a denial of service.  The remedy is: upgrade to the patched 1.9.10 version.  A workaround is to restrict the maximum number of queries on incoming TCP connections to a safe value, like 50, via the setMaxTCPQueriesPerConnection setting.  We would like to thank Renaud Allard for bringing this issue to our attention.",
  "published": "2025-05-20T05:15:00Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00618,
  "epssPercentile": 0.49874,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "dnsdist",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1.9.10-1",
      "fix": "DEBIAN-CVE-2025-30193",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-30193",
      "released": "2025-05-20T12:15:19Z"
    },
    {
      "platform": "linux",
      "product": "dnsdist",
      "release": "Debian 14",
      "fixedVersion": "1.9.10-1",
      "fix": "DEBIAN-CVE-2025-30193",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-30193",
      "released": "2025-05-20T12:15:19Z"
    },
    {
      "platform": "linux",
      "product": "dnsdist",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "1.6.1-1ubuntu0.1~esm2",
      "fix": "dnsdist 1.6.1-1ubuntu0.1~esm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-dnsdist-1.6.1-1ubuntu0.1-esm2",
      "released": "2025-05-20T05:15:00Z"
    },
    {
      "platform": "linux",
      "product": "dnsdist",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "1.8.3-2ubuntu0.1~esm1",
      "fix": "dnsdist 1.8.3-2ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-dnsdist-1.8.3-2ubuntu0.1-esm1",
      "released": "2025-08-13T06:15:00Z"
    },
    {
      "platform": "linux",
      "product": "dnsdist",
      "release": "opensuse-leap 15.6",
      "fixedVersion": "1.8.0-150400.9.6.1",
      "fix": "SUSE-SU-2025:01745-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2025-01745-1",
      "released": "2025-05-29T12:21:01Z"
    },
    {
      "platform": "linux",
      "product": "dnsdist",
      "release": "sles 15.6",
      "fixedVersion": "1.8.0-150400.9.6.1",
      "fix": "SUSE-SU-2025:01745-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2025-01745-1",
      "released": "2025-05-29T12:21:01Z"
    },
    {
      "platform": "linux",
      "product": "dnsdist",
      "release": "sles 15.7",
      "fixedVersion": "1.9.10-150700.3.3.1",
      "fix": "SUSE-SU-2025:01743-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2025-01743-1",
      "released": "2025-05-29T11:44:30Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}