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CVE-2020-15091

Published: 2020-07-02T17:15Z
Last Modified: 2024-11-21T05:04Z
Source: MITRE CVE List
License: MITRE-CVE-TOS
TenderMint from version 0.33.0 and before version 0.33.6 allows block proposers to include signatures for the wrong block. This may happen naturally if you start a network, have it run for some time and restart it (**without changing chainID**). A malicious block proposer (even with a minimal amount of stake) can use this vulnerability to completely halt the network. This issue is fixed in Tendermint 0.33.6 which checks all the signatures are for the block with 2/3+ majority before creating a commit. > MITRE Terms of Use apply – see LICENSE‑MITRE.txt