135 lines
6.2 KiB
JSON
135 lines
6.2 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-2026-34984",
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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": "2026-03-31T19:38:31.617Z",
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"datePublished": "2026-04-14T01:48:41.166Z",
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"dateUpdated": "2026-04-14T16:27:55.720Z"
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},
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"containers": {
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"cna": {
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"title": "External Secrets Operator has DNS exfiltration via getHostByName in its v2 template engine",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-200",
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"lang": "en",
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"description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
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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": "LOW",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "HIGH",
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"vulnIntegrityImpact": "NONE",
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"vulnAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"baseScore": 7.1,
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/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/external-secrets/external-secrets/security/advisories/GHSA-r2pg-r6h7-crf3",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/external-secrets/external-secrets/security/advisories/GHSA-r2pg-r6h7-crf3"
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},
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{
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"name": "https://github.com/external-secrets/external-secrets/commit/6800989bdc12782ca2605d3b8bf7f2876a16551a",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/external-secrets/external-secrets/commit/6800989bdc12782ca2605d3b8bf7f2876a16551a"
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},
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{
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"name": "https://github.com/external-secrets/external-secrets/releases/tag/v2.3.0",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/external-secrets/external-secrets/releases/tag/v2.3.0"
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}
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],
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"affected": [
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{
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"vendor": "external-secrets",
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"product": "external-secrets",
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"versions": [
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{
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"version": "< 2.3.0",
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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": "2026-04-14T01:48:41.166Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "External Secrets Operator reads information from a third-party service and automatically injects the values as Kubernetes Secrets. Versions 2.2.0 and below contain a vulnerability in runtime/template/v2/template.go where the v2 template engine removes env and expandenv from Sprig's TxtFuncMap() but leaves the getHostByName function accessible to user-controlled templates. Since ESO executes templates within the controller process, an attacker who can create or update templated ExternalSecret resources can invoke controller-side DNS lookups using secret-derived values. This creates a DNS exfiltration primitive, allowing fetched secret material to be leaked via DNS queries without requiring direct outbound network access from the attacker's workload. The impact is a confidentiality issue, particularly in environments where untrusted or lower-trust users can author templated ExternalSecret resources and the controller has DNS resolution capability. This issue has been fixed in version 2.3.0."
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}
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],
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"source": {
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"advisory": "GHSA-r2pg-r6h7-crf3",
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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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"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": "2026-04-14T15:37:48.338681Z",
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"id": "CVE-2026-34984",
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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": "no"
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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": "2026-04-14T16:27:55.720Z"
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}
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}
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]
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}
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} |