modules:
  - module: github.com/tendermint/tendermint
    versions:
      - introduced: 0.33.0
        fixed: 0.34.0-dev1.0.20200702134149-480b995a3172
    vulnerable_at: 0.33.0
    packages:
      - package: github.com/tendermint/tendermint/types
        symbols:
          - VoteSet.MakeCommit
        derived_symbols:
          - MakeCommit
description: |
    Proposed commits may contain signatures for blocks not contained
    within the commit. Instead of skipping these signatures, they
    cause failure during verification. A malicious proposer can use
    this to force consensus failures.
published: 2021-04-14T20:04:52Z
cves:
  - CVE-2020-15091
ghsas:
  - GHSA-6jqj-f58p-mrw3
credit: Neeraj Murarka
references:
  - fix: https://github.com/tendermint/tendermint/pull/5426
  - fix: https://github.com/tendermint/tendermint/commit/480b995a31727593f58b361af979054d17d84340
  - web: https://github.com/tendermint/tendermint/issues/4926