update changelog

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Hongrui Fang 2022-10-31 21:39:57 +08:00
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@ -6,6 +6,15 @@ This format is based on [Keep A Changelog](https://keepachangelog.com/en/1.0.0).
### Modified
- Fix several vulnerabilities and bugs found in both proposal and governor scripts.
Including:
- Governor accepts fake stake UTxO, meaning that an attacker can DoS by
creating Proposals without passing the minimum GT limit.
- The proposal policy asserts that GST moves while minting PST, effectively
allowing attackers to create fake proposals.
- Fix an exploit that allows arbitrary amount of SSTs to be minted. The attack is
very similar to the GAT one. See also the discussion in
[#202](https://github.com/Liqwid-Labs/agora/pull/202).