167 lines
7.3 KiB
JSON
167 lines
7.3 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-2026-75595",
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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": "2026-08-17T23:49:03.449Z",
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"datePublished": "2026-08-19T21:00:27.627Z",
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"dateUpdated": "2026-08-20T14:06:16.963Z"
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},
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"containers": {
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"cna": {
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"title": "Netty: SNI Routing Bypass via Fragmented TLS ClientHello Causing Fallback to Default SslContext",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-754",
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"lang": "en",
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"description": "CWE-754: Improper Check for Unusual or Exceptional Conditions",
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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": "HIGH",
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"vulnIntegrityImpact": "HIGH",
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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": 9.1,
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"baseSeverity": "CRITICAL",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/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/netty/netty/security/advisories/GHSA-c4c3-7fpv-j4q5",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/netty/netty/security/advisories/GHSA-c4c3-7fpv-j4q5"
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},
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{
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"name": "https://github.com/netty/netty/pull/17213",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/netty/netty/pull/17213"
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},
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{
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"name": "https://github.com/netty/netty/pull/17217",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/netty/netty/pull/17217"
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},
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{
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"name": "https://github.com/netty/netty/commit/1b5abc6443b63726c72cdd285af2feb7ddbb8ff7",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/netty/netty/commit/1b5abc6443b63726c72cdd285af2feb7ddbb8ff7"
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},
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{
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"name": "https://github.com/netty/netty/commit/9e0519239108a69b7e9bbc5e9182ee139a0d7961",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/netty/netty/commit/9e0519239108a69b7e9bbc5e9182ee139a0d7961"
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},
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{
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"name": "https://github.com/netty/netty/releases/tag/netty-4.1.137.Final",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/netty/netty/releases/tag/netty-4.1.137.Final"
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},
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{
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"name": "https://github.com/netty/netty/releases/tag/netty-4.2.17.Final",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/netty/netty/releases/tag/netty-4.2.17.Final"
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}
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],
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"affected": [
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{
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"vendor": "netty",
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"product": "netty",
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"versions": [
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{
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"version": "< 4.1.137.Final",
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"status": "affected"
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},
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{
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"version": ">= 4.2.0.Final, < 4.2.17.Final",
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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": "2026-08-19T21:00:27.627Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Fina and 4.2.17.Final, io.netty.handler.ssl.SslClientHelloHandler#decode checks the wrong offset before reading the four-byte TLS handshake header, so a ClientHello whose handshake header spans records can cause an IndexOutOfBoundsException and invoke select(ctx, null). This selects the default SslContext instead of the SNI-specific context. In deployments where per-SNI clientAuth=REQUIRE is the sole mutual TLS gate, the default SslContext uses clientAuth=NONE or clientAuth=OPTIONAL, and no application-layer certificate verification exists, an unauthenticated remote attacker can bypass the protected route's mutual TLS requirement. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final."
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}
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],
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"source": {
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"advisory": "GHSA-c4c3-7fpv-j4q5",
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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": "2026-08-20T14:05:51.091097Z",
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"id": "CVE-2026-75595",
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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": "total"
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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": "2026-08-20T14:06:16.963Z"
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}
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}
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]
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}
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} |