143 lines
6.4 KiB
JSON
143 lines
6.4 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-2026-49343",
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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": "2026-05-29T14:35:45.903Z",
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"datePublished": "2026-08-07T22:18:18.735Z",
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"dateUpdated": "2026-08-13T18:40:16.330Z"
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},
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"containers": {
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"cna": {
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"title": "Klever-Go KVM: Throttler slot leak in trie account-data sync causes epoch bootstrap / state sync DoS",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-400",
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"lang": "en",
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"description": "CWE-400: Uncontrolled Resource Consumption",
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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-772",
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"lang": "en",
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"description": "CWE-772: Missing Release of Resource after Effective Lifetime",
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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": "HIGH",
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"baseScore": 5.9,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"privilegesRequired": "NONE",
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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:N/UI:N/S:U/C:N/I:N/A:H",
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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/klever-io/klever-go/security/advisories/GHSA-fw38-pc54-jvx9",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/klever-io/klever-go/security/advisories/GHSA-fw38-pc54-jvx9"
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},
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{
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"name": "https://github.com/klever-io/klever-go/releases/tag/v1.7.18",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/klever-io/klever-go/releases/tag/v1.7.18"
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}
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],
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"affected": [
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{
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"vendor": "klever-io",
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"product": "klever-go",
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"versions": [
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{
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"version": "< 1.7.18",
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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": "2026-08-07T22:18:18.735Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Klever-Go is the Go implementation of the Klever blockchain protocol. In versions prior to 1.7.18, the account-data trie syncers are vulnerable to a resource-exhaustion flaw that leaks bounded throttler slots on error paths. In syncDataTrie() (in both userAccountsSyncer.go and kappAccountsSyncer.go), StartProcessing() reserves a slot from the NumGoRoutinesThrottler, but the corresponding EndProcessing() is only called on the success path and on the duplicate-root early return. As a result, any error from trie.NewTrie(), trie.NewTrieSyncer(), or trieSyncer.StartSyncing() (including the network-dependent timeout path) permanently consumes one slot for the lifetime of the throttler. An attacker who can repeatedly cause trie-node sync failures or timeouts during bootstrap can exhaust the bounded throttler, after which further account-data trie syncs stop making progress and SyncAccounts() returns a timeout. Because epoch bootstrap in syncUserAccountsState() and syncKappAccountsState() aborts on any such error, this causes bootstrap to fail, a core availability issue affecting fresh, restarting, or resyncing nodes and validators. This issue is fixed in version 1.7.18."
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}
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],
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"source": {
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"advisory": "GHSA-fw38-pc54-jvx9",
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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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"references": [
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{
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"url": "https://github.com/klever-io/klever-go/security/advisories/GHSA-fw38-pc54-jvx9",
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"tags": [
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"exploit"
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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": "ssvc",
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"content": {
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"timestamp": "2026-08-13T18:40:07.764602Z",
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"id": "CVE-2026-49343",
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"options": [
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{
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"Exploitation": "poc"
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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": "2026-08-13T18:40:16.330Z"
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}
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}
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]
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}
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} |