136 lines
5.7 KiB
JSON
136 lines
5.7 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-2026-32936",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-03-17T00:05:53.282Z",
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"datePublished": "2026-05-05T19:07:51.926Z",
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"dateUpdated": "2026-05-05T19:32:25.341Z"
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},
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"containers": {
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"cna": {
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"title": "CoreDNS DoH GET path missing size validation causes CPU and memory amplification",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-400",
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"lang": "en",
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"description": "CWE-400: Uncontrolled Resource Consumption",
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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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"metrics": [
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{
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"cvssV4_0": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"vulnAvailabilityImpact": "HIGH",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"baseScore": 8.7,
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
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"version": "4.0"
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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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"name": "https://github.com/coredns/coredns/security/advisories/GHSA-63cw-r7xf-jmwr",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/coredns/coredns/security/advisories/GHSA-63cw-r7xf-jmwr"
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},
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{
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"name": "https://github.com/coredns/coredns/releases/tag/v1.14.3",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/coredns/coredns/releases/tag/v1.14.3"
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}
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],
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"affected": [
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{
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"vendor": "coredns",
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"product": "coredns",
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"versions": [
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{
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"version": "< 1.14.3",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-05-05T19:07:51.926Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the DNS-over-HTTPS (DoH) GET path accepts oversized dns= query parameter values and performs URL query parsing, base64 decoding, and DNS message unpacking before rejecting the request. Unlike the POST path, which applies a bounded read via http.MaxBytesReader limited to 65536 bytes, the GET path has no equivalent size validation before expensive processing. A remote, unauthenticated attacker can repeatedly send oversized DoH GET requests to force high CPU usage, large transient memory allocations, and elevated garbage-collection pressure, leading to denial of service. This issue has been fixed in version 1.14.3."
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}
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],
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"source": {
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"advisory": "GHSA-63cw-r7xf-jmwr",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://github.com/coredns/coredns/security/advisories/GHSA-63cw-r7xf-jmwr",
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"tags": [
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"exploit"
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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": "2026-05-05T19:32:21.653054Z",
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"id": "CVE-2026-32936",
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"options": [
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{
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"Exploitation": "poc"
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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": "2026-05-05T19:32:25.341Z"
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}
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}
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]
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}
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} |