139 lines
5.8 KiB
JSON
139 lines
5.8 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-2026-33248",
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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": "2026-03-18T02:42:27.509Z",
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"datePublished": "2026-03-25T20:18:28.923Z",
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"dateUpdated": "2026-03-26T19:52:12.357Z"
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},
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"containers": {
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"cna": {
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"title": "NATS has mTLS verify_and_map authentication bypass via incorrect Subject DN matching",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-287",
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"lang": "en",
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"description": "CWE-287: Improper Authentication",
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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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"descriptions": [
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{
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"cweId": "CWE-295",
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"lang": "en",
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"description": "CWE-295: Improper Certificate Validation",
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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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"cvssV3_1": {
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"attackComplexity": "HIGH",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 4.2,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "LOW",
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"integrityImpact": "LOW",
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"privilegesRequired": "LOW",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
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"version": "3.1"
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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/nats-io/nats-server/security/advisories/GHSA-3f24-pcvm-5jqc",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/nats-io/nats-server/security/advisories/GHSA-3f24-pcvm-5jqc"
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},
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{
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"name": "https://advisories.nats.io/CVE/secnote-2026-13.txt",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://advisories.nats.io/CVE/secnote-2026-13.txt"
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}
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],
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"affected": [
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{
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"vendor": "nats-io",
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"product": "nats-server",
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"versions": [
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{
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"version": "< 2.11.15",
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"status": "affected"
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},
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{
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"version": ">= 2.12.0-RC.1, < 2.12.6",
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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": "2026-03-25T20:18:28.923Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, when using mTLS for client identity, with `verify_and_map` to derive a NATS identity from the client certificate's Subject DN, certain patterns of RDN would not be correctly enforced, allowing for authentication bypass. This does require a valid certificate from a CA already trusted for client certificates, and `DN` naming patterns which the NATS maintainers consider highly unlikely. So this is an unlikely attack. Nonetheless, administrators who have been very sophisticated in their `DN` construction patterns might conceivably be impacted. Versions 2.11.15 and 2.12.6 contain a fix. As a workaround, developers should review their CA issuing practices."
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}
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],
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"source": {
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"advisory": "GHSA-3f24-pcvm-5jqc",
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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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"id": "CVE-2026-33248",
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"role": "CISA Coordinator",
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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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"version": "2.0.3",
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"timestamp": "2026-03-26T19:35:03.328665Z"
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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": "2026-03-26T19:52:12.357Z"
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}
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}
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]
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}
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} |