CVE-2022-35936 Information

Description

Ethermint is an Ethereum library. In Ethermint running versions before v0.17.2 the contract selfdestruct invocation permanently removes the corresponding bytecode from the internal database storage. However due to a bug in the DeleteAccountfunction all contracts that used the identical bytecode (i.e shared the same CodeHash) will also stop working once one contract invokes selfdestruct even though the other contracts did not invoke the selfdestruct OPCODE. This vulnerability has been patched in Ethermint version v0.18.0. The patch has state machine-breaking changes for applications using Ethermint so a coordinated upgrade procedure is required. A workaround is available. If a contract is subject to DoS due to this issue the user can redeploy the same contract i.e. with identical bytecode so that the original contract’s code is recovered. The new contract deployment restores the bytecode hash -> bytecode entry in the internal state.

Reference

https://github.com/evmos/ethermint/blob/c9d42d667b753147977a725e98ed116c933c76cb/x/evm/keeper/statedb.go#L199-L203 https://github.com/evmos/ethermint/commit/144741832007a26dbe950512acbda4ed95b2a451 https://github.com/evmos/ethermint/security/advisories/GHSA-f92v-grc2-w2fg