CVE-2020-15091

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Summary

CVECVE-2020-15091
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-07-02 17:15:00 UTC
Updated2020-07-08 19:16:00 UTC
DescriptionTenderMint 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.

Risk And Classification

Problem Types: CWE-347

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Tendermint Tendermint All All All All
Application Tendermint Tendermint All All All All

References

ReferenceSourceLinkTags
consensus: Do not allow signatures for a wrong block in commits · tendermint/tendermint@480b995 · GitHub MISC github.com Patch, Third Party Advisory
Consensus: "enterPrevote: ProposalBlock is invalid" - Error: "wrong signature" · Issue #4926 · tendermint/tendermint · GitHub MISC github.com Exploit, Issue Tracking, Third Party Advisory
Security Advisory Syringa · Advisory · tendermint/tendermint · GitHub CONFIRM github.com Exploit, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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