172 lines
7.8 KiB
JSON
172 lines
7.8 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-2026-84501",
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"assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
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"state": "PUBLISHED",
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"assignerShortName": "apache",
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"dateReserved": "2026-09-01T20:56:03.868Z",
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"datePublished": "2026-09-16T09:28:10.294Z",
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"dateUpdated": "2026-09-16T19:43:09.161Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
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"shortName": "apache",
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"dateUpdated": "2026-09-16T09:28:10.294Z"
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},
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"title": "Apache ZooKeeper: Operational log forgery via newline injection in EnsembleAuthenticationProvider",
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"problemTypes": [
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{
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"descriptions": [
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{
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"description": "CWE-117 Improper output neutralization for logs",
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"lang": "en",
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"cweId": "CWE-117",
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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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"source": {
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"discovery": "UNKNOWN"
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},
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"affected": [
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{
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"vendor": "Apache Software Foundation",
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"product": "Apache ZooKeeper",
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"collectionURL": "https://repo.maven.apache.org/maven2",
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"packageName": "org.apache.zookeeper:zookeeper",
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"packageURL": "pkg:maven/org.apache.zookeeper/zookeeper",
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"versions": [
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{
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"status": "affected",
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"version": "3.9.0",
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"lessThanOrEqual": "3.9.5",
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"versionType": "maven"
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},
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{
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"status": "affected",
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"version": "3.8.0",
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"lessThanOrEqual": "3.8.6",
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"versionType": "maven"
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}
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],
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"defaultStatus": "unaffected"
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}
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],
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"descriptions": [
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{
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"value": "An unauthenticated attacker can inject arbitrary fake log lines into Apache ZooKeeper's operational log by sending a crafted add_auth(\"ensemble\", ...) request containing newline characters (\\n). When the ensemble name doesn't match, EnsembleAuthenticationProvider.handleAuthentication() logs the raw, unsanitized name via LOG.warn(). Because SLF4J's {} placeholder preserves embedded newlines, the attacker can forge complete log entries — with arbitrary timestamps, log levels, class names, and messages — that are visually indistinguishable from genuine ZooKeeper log output.\n\nThis issue affects Apache ZooKeeper: from 3.9.0 through 3.9.5, from 3.8.0 through 3.8.6.\n\nUsers are recommended to upgrade to version 3.8.7 or 3.9.6, which fixes the issue.",
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"lang": "en",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"value": "<p>An unauthenticated attacker can inject arbitrary fake log lines into Apache ZooKeeper's operational log by sending a crafted add_auth(\"ensemble\", ...) request containing newline characters (\\n). When the ensemble name doesn't match, EnsembleAuthenticationProvider.handleAuthentication() logs the raw, unsanitized name via LOG.warn(). Because SLF4J's {} placeholder preserves embedded newlines, the attacker can forge complete log entries — with arbitrary timestamps, log levels, class names, and messages — that are visually indistinguishable from genuine ZooKeeper log output.<br><span><br>This issue affects Apache ZooKeeper: from 3.9.0 through 3.9.5, from 3.8.0 through 3.8.6.<br></span><span><br>Users are recommended to upgrade to version 3.8.7 or 3.9.6, which fixes the issue.</span></p>"
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}
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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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"url": "https://lists.apache.org/thread/ohby1g6zjt72p0w79rhbr41nczzvr33y",
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"tags": [
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"vendor-advisory"
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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": "Textual description of severity",
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"content": {
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"text": "moderate"
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}
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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]
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "Youlong Chen Institute of Computing Technology <chenyoulong20g@ict.ac.cn>",
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"type": "finder"
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}
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],
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"x_generator": {
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"engine": "Vulnogram 1.0.3"
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}
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},
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"adp": [
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{
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"title": "CVE Program Container",
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"references": [
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{
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"url": "http://www.openwall.com/lists/oss-security/2026/09/15/7"
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}
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],
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"providerMetadata": {
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"shortName": "CVE",
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"dateUpdated": "2026-09-16T10:12:02.894Z"
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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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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 5.3,
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"attackVector": "NETWORK",
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
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"integrityImpact": "LOW",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "NONE",
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"privilegesRequired": "NONE",
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"confidentialityImpact": "NONE"
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}
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},
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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": "2026-09-16T19:42:27.138755Z",
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"id": "CVE-2026-84501",
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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": "2026-09-16T19:43:09.161Z"
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}
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}
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]
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}
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} |