166 lines
6.9 KiB
JSON
166 lines
6.9 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-2026-84303",
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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": "2026-09-01T16:17:43.078Z",
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"datePublished": "2026-09-01T18:14:37.870Z",
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"dateUpdated": "2026-09-02T19:14:49.353Z"
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},
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"containers": {
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"cna": {
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"title": "gRPC-Go: xDS RBAC HTTP Filter bypass via mixed-case Header Matching and gRFC A41 validation evasion",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-178",
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"lang": "en",
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"description": "CWE-178: Improper Handling of Case Sensitivity",
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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-863",
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"lang": "en",
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"description": "CWE-863: Incorrect Authorization",
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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": "PRESENT",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "LOW",
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"vulnIntegrityImpact": "LOW",
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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": 6.3,
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/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/grpc/grpc-go/security/advisories/GHSA-qc2q-p7wx-3px3",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/grpc/grpc-go/security/advisories/GHSA-qc2q-p7wx-3px3"
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},
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{
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"name": "https://github.com/grpc/grpc-go/pull/9332",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/grpc/grpc-go/pull/9332"
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},
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{
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"name": "https://github.com/grpc/grpc-go/pull/9335",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/grpc/grpc-go/pull/9335"
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},
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{
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"name": "https://github.com/grpc/grpc-go/commit/db9482836c298f234c896cf82ab68cafc78237f8",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/grpc/grpc-go/commit/db9482836c298f234c896cf82ab68cafc78237f8"
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},
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{
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"name": "https://github.com/grpc/grpc-go/commit/ebba6f3f1b206e2b4dc4d1d5a96d18430302c2fe",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/grpc/grpc-go/commit/ebba6f3f1b206e2b4dc4d1d5a96d18430302c2fe"
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},
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{
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"name": "https://github.com/grpc/grpc-go/releases/tag/v1.83.1",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/grpc/grpc-go/releases/tag/v1.83.1"
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}
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],
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"affected": [
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{
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"vendor": "grpc",
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"product": "grpc-go",
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"versions": [
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{
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"version": "< 1.83.1",
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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": "2026-09-01T18:14:37.870Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "gRPC-Go is the Go language implementation of gRPC. Prior to 1.83.1, the xDS RBAC HTTP filter in internal/xds/httpfilter/rbac/rbac.go does not lowercase header matcher names in normalizeHeaderMatcher even though incoming metadata keys are lowercase. A DENY policy using a mixed-case name such as X-Role or User-Agent therefore does not match and fails open, allowing requests that should be rejected. The same case mismatch permits :Scheme or Grpc-Status to evade gRFC A41 validation and prevents Host from being rewritten to :authority. This issue is fixed in version 1.83.1."
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}
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],
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"source": {
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"advisory": "GHSA-qc2q-p7wx-3px3",
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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": "2026-09-02T19:14:42.460152Z",
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"id": "CVE-2026-84303",
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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": "2026-09-02T19:14:49.353Z"
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}
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}
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]
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}
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} |