CVE-2022-35936
What it is
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 `DeleteAccount`function, 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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of service disruption.
- Exploit odds
- 1.5% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.5% in the next 30 days (EPSS).
- Severity: 8.2 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 1.5% · EPSS, next 30 days
- Weakness
- CWE-668 · Resource exposure
- Record status
- Modified
Affected
- Evmos Ethermint < 0.18.0
- Kava < 0.18.0
- Crypto Cronos ≤ 0.7.0
- Evmos < 7.0.0
Attack profile CVSS 3.1 · 8.2
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- Low
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2022-35936.md and follow it. Check whether this project is affected by CVE-2022-35936. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/evmos/ethermint/commit/144741832007a26dbe950512acbda4ed95b2a451
- https://github.com/evmos/ethermint/security/advisories/GHSA-f92v-grc2-w2fg
- https://github.com/evmos/ethermint/commit/144741832007a26dbe950512acbda4ed95b2a451
- https://github.com/evmos/ethermint/security/advisories/GHSA-f92v-grc2-w2fg
References
- 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
- 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