132 lines
5.9 KiB
JSON
132 lines
5.9 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-2026-46540",
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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": "2026-05-14T20:42:31.368Z",
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"datePublished": "2026-06-09T23:45:01.847Z",
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"dateUpdated": "2026-06-10T13:00:12.382Z"
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},
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"containers": {
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"cna": {
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"title": "Nimiq light-blockchain: Light blockchain rebranch issue",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-841",
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"lang": "en",
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"description": "CWE-841: Improper Enforcement of Behavioral Workflow",
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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": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "LOW",
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"baseScore": 6.5,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "NONE",
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"integrityImpact": "LOW",
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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:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
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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/nimiq/core-rs-albatross/security/advisories/GHSA-m3pg-qc2q-mg8c",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/nimiq/core-rs-albatross/security/advisories/GHSA-m3pg-qc2q-mg8c"
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},
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{
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"name": "https://github.com/nimiq/core-rs-albatross/pull/3706",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/nimiq/core-rs-albatross/pull/3706"
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},
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{
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"name": "https://github.com/nimiq/core-rs-albatross/releases/tag/v1.4.0",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/nimiq/core-rs-albatross/releases/tag/v1.4.0"
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}
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],
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"affected": [
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{
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"vendor": "nimiq",
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"product": "core-rs-albatross",
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"versions": [
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{
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"version": "< 1.4.0",
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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": "2026-06-09T23:45:01.847Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.4.0, when LightBlockchain::rebranch() adopts a fork chain whose tip is a macro block (checkpoint or election), it only updates self.head but fails to update self.macro_head, self.election_head, self.current_validators, or store the election header in the chain_store. This is in direct contrast with the full Blockchain::rebranch() at blockchain/src/blockchain/push.rs:504-518, which correctly updates all macro/election state when the new head is a macro block. After a rebranch to a macro block, the stale macro_head causes subsequent macro blocks pushed via push() to be verified against the wrong predecessor via verify_macro_successor(&this.macro_head). If the rebranch target was an election block, the stale current_validators causes every subsequent block to fail verify_validators(), completely stalling the light client's chain progression. This issue has been patched in version 1.4.0."
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}
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],
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"source": {
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"advisory": "GHSA-m3pg-qc2q-mg8c",
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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": "2026-06-10T12:59:40.645536Z",
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"id": "CVE-2026-46540",
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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": "2026-06-10T13:00:12.382Z"
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}
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}
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]
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}
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} |