{"api_version":"1","generated_at":"2026-07-23T14:00:12+00:00","cve":"CVE-2022-23507","urls":{"html":"https://cve.report/CVE-2022-23507","api":"https://cve.report/api/cve/CVE-2022-23507.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2022-23507","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-23507"},"summary":{"title":"CVE-2022-23507","description":"Tendermint is a high-performance blockchain consensus engine for Byzantine fault tolerant applications. Versions prior to 0.28.0 contain a potential attack via Improper Verification of Cryptographic Signature, affecting anyone using the tendermint-light-client and related packages to perform light client verification (e.g. IBC-rs, Hermes). The light client does not check that the chain IDs of the trusted and untrusted headers match, resulting in a possible attack vector where someone who finds a header from an untrusted chain that satisfies all other verification conditions (e.g. enough overlapping validator signatures) could fool a light client. The attack vector is currently theoretical, and no proof-of-concept exists yet to exploit it on live networks. This issue is patched in version 0.28.0. There are no workarounds.","state":"PUBLIC","assigner":"security-advisories@github.com","published_at":"2022-12-15 19:15:00","updated_at":"2022-12-20 16:14:00"},"problem_types":["CWE-347"],"metrics":[],"references":[{"url":"https://github.com/informalsystems/tendermint-rs/security/advisories/GHSA-xqqc-c5gw-c5r5","name":"https://github.com/informalsystems/tendermint-rs/security/advisories/GHSA-xqqc-c5gw-c5r5","refsource":"MISC","tags":[],"title":"Light client verification not taking into account chain ID · Advisory · informalsystems/tendermint-rs · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2022-23507","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-23507","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2022","cve_id":"23507","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"tendermint-light-client-js_project","cpe5":"tendermint-light-client-js","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"rust","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"23507","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"tendermint-light-client-verifier_project","cpe5":"tendermint-light-client-verifier","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"rust","cpe12":"*","cpe13":"*"},{"cve_year":"2022","cve_id":"23507","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"tendermint-light-client_project","cpe5":"tendermint-light-client","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"rust","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2022-23507","ASSIGNER":"security-advisories@github.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"Tendermint is a high-performance blockchain consensus engine for Byzantine fault tolerant applications. Versions prior to 0.28.0 contain a potential attack via Improper Verification of Cryptographic Signature, affecting anyone using the tendermint-light-client and related packages to perform light client verification (e.g. IBC-rs, Hermes). The light client does not check that the chain IDs of the trusted and untrusted headers match, resulting in a possible attack vector where someone who finds a header from an untrusted chain that satisfies all other verification conditions (e.g. enough overlapping validator signatures) could fool a light client. The attack vector is currently theoretical, and no proof-of-concept exists yet to exploit it on live networks. This issue is patched in version 0.28.0. There are no workarounds."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-347: Improper Verification of Cryptographic Signature","cweId":"CWE-347"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"informalsystems","product":{"product_data":[{"product_name":"tendermint-rs","version":{"version_data":[{"version_value":"0.28.0","version_affected":"="}]}}]}}]}},"references":{"reference_data":[{"url":"https://github.com/informalsystems/tendermint-rs/security/advisories/GHSA-xqqc-c5gw-c5r5","refsource":"MISC","name":"https://github.com/informalsystems/tendermint-rs/security/advisories/GHSA-xqqc-c5gw-c5r5"}]},"source":{"advisory":"GHSA-xqqc-c5gw-c5r5","discovery":"UNKNOWN"},"impact":{"cvss":[{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N","version":"3.1"}]}},"nvd":{"publishedDate":"2022-12-15 19:15:00","lastModifiedDate":"2022-12-20 16:14:00","problem_types":["CWE-347"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM"},"exploitabilityScore":3.9,"impactScore":2.5}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:tendermint-light-client-js_project:tendermint-light-client-js:*:*:*:*:rust:*:*:*","versionEndExcluding":"0.28.0","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:tendermint-light-client_project:tendermint-light-client:*:*:*:*:rust:*:*:*","versionEndExcluding":"0.28.0","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:tendermint-light-client-verifier_project:tendermint-light-client-verifier:*:*:*:*:*:rust:*:*","versionEndExcluding":"0.28.0","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2022","CveId":"23507","Ordinal":"226403","Title":"CVE-2022-23507","CVE":"CVE-2022-23507","Year":"2022"},"notes":[{"CveYear":"2022","CveId":"23507","Ordinal":"1","NoteData":"** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.","Type":"Description","Title":null}]}}}