{"id":"CVE-2022-23507","summary":"Light client verification not taking into account chain ID","details":"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.","aliases":["GHSA-xqqc-c5gw-c5r5"],"modified":"2026-08-12T03:51:22.316177136Z","published":"2022-12-15T00:01:04.540Z","database_specific":{"cwe_ids":["CWE-347"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/23xxx/CVE-2022-23507.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/23xxx/CVE-2022-23507.json"},{"type":"ADVISORY","url":"https://github.com/informalsystems/tendermint-rs/security/advisories/GHSA-xqqc-c5gw-c5r5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-23507"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/cometbft/tendermint-rs","events":[{"introduced":"560c852840ac58cb03b55fc376ff0dc2ac089d94"},{"fixed":"560c852840ac58cb03b55fc376ff0dc2ac089d94"}],"database_specific":{"source":["AFFECTED_FIELD","CPE_RANGE"],"cpe":["cpe:2.3:a:tendermint-light-client-js_project:tendermint-light-client-js:*:*:*:*:rust:*:*:*","cpe:2.3:a:tendermint-light-client-verifier_project:tendermint-light-client-verifier:*:*:*:*:*:rust:*:*","cpe:2.3:a:tendermint-light-client_project:tendermint-light-client:*:*:*:*:rust:*:*:*"],"extracted_events":[{"introduced":"0.28.0"},{"last_affected":"0.28.0"},{"introduced":"0"},{"fixed":"0.28.0"}]}}],"versions":["0.28.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-23507.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"}]}