CVE-2020-15091

Summary

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.

Affected Software

VendorProductVersion RangeStatus
tenderminttendermint>= 0.33.0, < 0.33.6affected

Weaknesses

  • CWE-347: {"CWE-347":"Improper Verification of Cryptographic Signature"}

ADP Enrichment

CVE Program Container

Additional References

References