| modules: |
| - module: github.com/tendermint/tendermint |
| versions: |
| - introduced: 0.34.0 |
| fixed: 0.34.3 |
| vulnerable_at: 0.34.2 |
| packages: |
| - package: github.com/tendermint/tendermint/evidence |
| symbols: |
| - Pool.Update |
| - Pool.CheckEvidence |
| - package: github.com/tendermint/tendermint/consensus |
| symbols: |
| - State.tryAddVote |
| derived_symbols: |
| - BaseWAL.OnStart |
| - Handshaker.Handshake |
| - Handshaker.ReplayBlocks |
| - Reactor.OnStart |
| - Reactor.SwitchToConsensus |
| - RunReplayFile |
| - State.OnStart |
| - State.OpenWAL |
| - State.ReplayFile |
| - WALGenerateNBlocks |
| - WALWithNBlocks |
| description: | |
| Mishandling of timestamps during consensus process can cause a denial of service. |
| |
| While reaching consensus, different tendermint nodes can observe a different |
| timestamp for a consensus evidence. This mismatch can cause the evidence to be |
| invalid, upon which the node producing the evidence will be asked to generate |
| a new evidence. This new evidence will be the same, which means it will again |
| be rejected by other nodes involved in the consensus. This loop will continue |
| until the peer nodes decide to disconnect from the node producing the evidence. |
| cves: |
| - CVE-2021-21271 |
| ghsas: |
| - GHSA-p658-8693-mhvg |
| credit: cmwaters (Github) |
| references: |
| - advisory: https://github.com/tendermint/tendermint/security/advisories/GHSA-p658-8693-mhvg |
| - article: https://github.com/tendermint/tendermint/blob/v0.34.3/CHANGELOG.md#v0.34.3 |
| - fix: https://github.com/tendermint/tendermint/commit/a2a6852ab99e4a0f9e79f0ea8c1726e262e25c76 |
