{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-24371", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2025-01-20T15:18:26.991Z", "datePublished": "2025-02-03T21:20:56.024Z", "dateUpdated": "2025-02-04T19:16:21.174Z"}, "containers": {"cna": {"title": "Malicious peer can make node stuck in blocksync in github.com/cometbft/cometbft", "problemTypes": [{"descriptions": [{"cweId": "CWE-703", "lang": "en", "description": "CWE-703: Improper Check or Handling of Exceptional Conditions", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 7.1, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/cometbft/cometbft/security/advisories/GHSA-22qq-3xwm-r5x4", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/cometbft/cometbft/security/advisories/GHSA-22qq-3xwm-r5x4"}, {"name": "https://github.com/cometbft/cometbft/releases/tag/v0.38.17", "tags": ["x_refsource_MISC"], "url": "https://github.com/cometbft/cometbft/releases/tag/v0.38.17"}, {"name": "https://github.com/cometbft/cometbft/releases/tag/v1.0.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/cometbft/cometbft/releases/tag/v1.0.1"}], "affected": [{"vendor": "cometbft", "product": "cometbft", "versions": [{"version": "< 0.38.17", "status": "affected"}, {"version": "= 1.0.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2025-02-03T21:20:56.024Z"}, "descriptions": [{"lang": "en", "value": "CometBFT is a distributed, Byzantine fault-tolerant, deterministic state machine replication engine. In the `blocksync` protocol peers send their `base` and `latest` heights when they connect to a new node (`A`), which is syncing to the tip of a network. `base` acts as a lower ground and informs `A` that the peer only has blocks starting from height `base`. `latest` height informs `A` about the latest block in a network. Normally, nodes would only report increasing heights. If `B` fails to provide the latest block, `B` is removed and the `latest` height (target height) is recalculated based on other nodes `latest` heights. The existing code however doesn't check for the case where `B` first reports `latest` height `X` and immediately after height `Y`, where `X > Y`. `A` will be trying to catch up to 2000 indefinitely. This condition requires the introduction of malicious code in the full node first reporting some non-existing `latest` height, then reporting lower `latest` height and nodes which are syncing using `blocksync` protocol. This issue has been patched in versions 1.0.1 and 0.38.17 and all users are advised to upgrade. Operators may attempt to ban malicious peers from the network as a workaround."}], "source": {"advisory": "GHSA-22qq-3xwm-r5x4", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-02-04T19:15:05.677855Z", "id": "CVE-2025-24371", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-02-04T19:16:21.174Z"}}]}}

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