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.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/23xxx/CVE-2022-23507.json",
"cwe_ids": [
"CWE-347"
],
"cna_assigner": "GitHub_M"
}{
"extracted_events": [
{
"introduced": "0.28.0"
},
{
"last_affected": "0.28.0"
},
{
"introduced": "0"
},
{
"fixed": "0.28.0"
}
],
"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:*:*:*"
]
}