167 lines
6.7 KiB
JSON
167 lines
6.7 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-40209",
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"assignerOrgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981",
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"state": "PUBLISHED",
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"assignerShortName": "OX",
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"dateReserved": "2026-04-10T07:11:39.060Z",
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"datePublished": "2026-06-25T12:23:05.694Z",
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"dateUpdated": "2026-06-25T13:56:22.793Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981",
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"shortName": "OX",
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"dateUpdated": "2026-06-25T12:23:05.694Z"
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},
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"title": "Denial of service via IXFR queries",
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"datePublic": "2026-06-24T22:00:00.000Z",
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"description": "Missing Release of Resource after Effective Lifetime",
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"type": "CWE"
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}
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]
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}
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],
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"affected": [
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{
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"vendor": "PowerDNS",
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"product": "DNSdist",
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"collectionURL": "https://repo.powerdns.com/",
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"packageName": "dnsdist",
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"repo": "https://github.com/PowerDNS/pdns",
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"modules": [
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"DNS over TCP to the backend"
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],
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"programFiles": [
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"dnsdist-tcp-downstream.cc"
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],
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"versions": [
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{
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"status": "affected",
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"version": "1.9.0",
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"lessThan": "1.9.15",
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"versionType": "semver"
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},
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{
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"status": "affected",
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"version": "2.0.0",
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"lessThan": "2.0.7",
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"versionType": "semver"
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}
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],
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"defaultStatus": "unaffected"
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "An attacker might be able to cause outgoing TCP connections to backend to be stuck until a timeout occurs instead of being released immediately, by sending IXFR queries. This could be used to cause a denial of service if there is a limit to the number of concurrent connections to this backend, or if the process runs out of file descriptors.",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"value": "<p>An attacker might be able to cause outgoing TCP connections to backend to be stuck until a timeout occurs instead of being released immediately, by sending IXFR queries. This could be used to cause a denial of service if there is a limit to the number of concurrent connections to this backend, or if the process runs out of file descriptors.</p>"
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}
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]
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}
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],
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"references": [
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{
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"url": "https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-09.html"
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}
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],
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"metrics": [
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{
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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],
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"cvssV3_1": {
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"version": "3.1",
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "LOW",
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"baseSeverity": "MEDIUM",
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"baseScore": 5.3,
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
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}
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "Qifan Zhang (Palo Alto Networks)",
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"type": "finder"
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}
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],
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"source": {
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"discovery": "UNKNOWN"
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},
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"x_generator": {
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"engine": "Vulnogram 1.0.2"
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}
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},
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"adp": [
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{
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"problemTypes": [
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{
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"descriptions": [
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{
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"type": "CWE",
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"cweId": "CWE-772",
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"lang": "en",
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"description": "CWE-772 Missing Release of Resource after Effective Lifetime"
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}
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]
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}
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],
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-06-25T13:56:17.791790Z",
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"id": "CVE-2026-40209",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-06-25T13:56:22.793Z"
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}
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}
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]
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}
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} |